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How to Pursue a Doctoral Degree While Working Full Time

Balancing a career while pursuing a doctoral degree—or any degree for that matter—is not easy, but it is possible. With the right plan and support system in place, you can achieve your academic goals. Doctoral students learn—through research-based theory and practice—how to address the many challenges encountered across an array of professional fields. While obtaining a doctoral degree, students begin to integrate the practical skills that they are learning into their own professional careers, to ultimately emerge as leaders within their workplace or field.  We recently spoke with a few Endicott College employees—Brittany Potter ’16 M’17, Assistant Dean of Academic Success, Sendy Suazo ’14 M’16, Community Outreach & Recruitment Coordinator, and Ian Menchini, Director, Graduate Enrollment & Advising—who are all currently pursuing their doctoral degrees while working full time. Here’s what they want you to know:

Leverage your everyday work

As you progress through the program, you’ll begin to notice that when you’re at work, you’re actually doing coursework—you’ll be able to relate real life experiences to the theories you’re learning. Recognize that you should be absorbing and taking your professional experiences into your academic assignments, it will be beneficial to your degree and you’ll see the relevance in your work.

Get organized

Understand that you are weaving your doctoral pursuits into your lifestyle.  To figure out how it will fit, create a schedule and find your rhythm. Keep your goals in mind and plan your time strategically to account for coursework, but also for periods of rest.  

Build a support network

You won’t be navigating through your program alone, your family, friends, and coworkers can all help to support you along your journey. Once you’ve identified a support network, determine how those people can assist you. You will be assigned a mentor who will act as a resource for you throughout your program and who will also serve as your dissertation advisor.  Additionally, identify one or two members from your cohort to connect with—whether for assistance on projects or for accountability.

Your research topic

Choose a dissertation topic related to your career and identify a problem of practice within your professional field—your research will focus on how to solve that problem. Your mentor will help you narrow your topic, through concept mapping, continuous research, and further narrowing. S/he will help you figure out how to gather pertinent data and how to apply it to your topic.  If you are unsure about your topic, your mentor will assist you in navigating through your interests to find what topics you are really passionate about.  You’ll actually enjoy conducting research for your program because it's related to what you love to do. Click here  to learn more about Endicott’s doctoral programs. 

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How to juggle a full-time job and a part-time PhD

My PhD and my business career are not connected and they are both demanding. But I’ve found there are benefits to my double life

I took a while to tell my colleagues that I was studying for a PhD in my spare time. I was concerned that they might question my ability to balance a full-time (and full-on) career with doctoral studies in a topic completely unrelated to the industry I work in.

But I began to realise that, although the topic I am exploring is not directly connected, the skills I am acquiring are hugely valuable. The process has given me new perspectives and added value in ways I had not expected.

My approach to innovation has evolved, for example, as I apply academic questioning and analysis to business problems. I have completely refined my prioritisation skills. And mentoring graduates and helping them to realise their potential has inspired me to solidify my own thinking about progression.

Studying part-time for a doctorate can be a lonely experience; I have met only a small number of people in the same position. What’s more, there isn’t a huge amount of advice on the topic, so here are lessons I have learned about managing it so far:

Choose a topic that you love

Your choice of subject has to be so appealing that you can keep yourself motivated for the duration of your studies, in the face of the stresses and strains of work. This project may take six years (or more), so it needs a topic that you can’t leave alone. I’ve come to realise that much of a PhD is just getting through it, proving to yourself that you can persist and keep going.

Find the right supervisor and the right programme

Before you begin, it’s important to spend a significant amount of time finding the right supervisor – someone who can appreciate and support your approach. They will need to understand your priorities and your study pattern, which is likely to involve short bursts of activity. Look for someone experienced and who can understand your end goals. You are CEO of your project, so choose your supervisory team well, just as you would do in business.

Set the ground rules

Agree the minimum face-to-face and remote contact required with your supervisor. Document a clear plan of work and activities to reassure people around you – your supervisor and your colleagues – that you are in control.

Take real holidays

Much of the leave I take from work is focused on catching up on studying, but a break away from everything helps to clear the mind and restore the balance between work, study, home, family and friends.

Accept support

Help is there if you look for it and are open to receive it. Once I started being more open about what I was doing, the support I received from my colleagues hugely increased.

Only do what you need to

Accept that you cannot do everything. If your studies are not intended to further your career, you don’t have to give papers, or participate in teaching unless you want to. You need to be clear about the reasons for pursuing your studies. If it is not for a career in academia, then why put yourself under that extra pressure?

Value yourself

Work out how your studies will make you different – value the unique perspective they will enable you to bring to your organisation. Being able to articulate the extra benefits that you bring to your role may be useful if you need leniency around working hours or have to ask for study leave. There are more options than ever before to study remotely or part-time. Pursuing something that you are really interested in can be intensely fulfilling and help you to move towards a rounded and holistic approach to life.

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5 Things to Consider Before Doing a PhD While Working

• By Nicholas R.
• August 19, 2020

Those interested in getting a PhD but dreading the several years of no income or a stipend that doesn’t meet their needs may consider a part time or even a full time job. That way, they can gain experience in the field, save up a little money and have a non-academic route they could later make use of. After all, if you’ve already made it to the point where you’re eligible to study at PhD level, you’ve already proven that you have great time management skills and that you can dedicate yourself to your studies, right?…

It might sound like a workable plan to many, but getting a PhD while working might not be as easy as you may think. Take it from many PhD students and postgrads who warn that it a slippery slope from a part time PhD to no PhD at all.

If you decide to go down this route, keep the following considerations in mind to give you the best chance of succeeding.

1. Know Your Programme

Some part time PhD programmes, especially the ones offered by online universities and distance learning schools, are well suited for those who want to work and study at the same time. Some aren’t as rigorous or time-consuming as others, and in some fields, the experience of working in industry through your current career will be a great benefit. A part time PhD will also have a more manageable workload , and supervisors will usually be more experience in providing support to working students. But keep in mind that some PhD part time programmes will not be eligible for financial aid or funding , at which point part time study may no longer be personally worth it.

2. Know Your Job

If your work is related to your field of study and your employers understand and support the requirements of your PhD, you will have a much less stressful few years. Therefore, one of the first things you’ll want to do is to get your employer on your side.

You can go about this by sitting down with them and explaining what your research will be about, how it will benefit your professional development and how it will benefit them as a business. You will also want to reassure them that you’ll be able to remain committed to your job during your studies, as this is likely to be their biggest concern. Don’t just stop at their verbal support, ask your manager to sit down with you to discuss the possibility of funding support, study days and the assignment of a mentor if your workplace has a doctorate holder.

Finding a PhD has never been this easy – search for a PhD by keyword, location or academic area of interest.

3. Know Your Situation

If you have young children, a sick parent, or generally any commitments that require hours of your time, it’s probably best to stay a full time student. If your field requires many publications or relies heavily on being able to network and interact with other researchers, keep in mind that you probably won’t be able to live up to their expectations if you already have work commitments you need to keep up.

4. Know Your Supervisor

Your supervisor should be supportive of the fact that you’re attempting to carry out a PhD whilst working part time rather than seeing it as a hindrance. As is to be expected, part time students generally struggle more than full time ones due to having greater external commitments, less contact time and a longer programme duration (beyond five years). You will want to find a PhD supervisor who is aware of these challenges, and if at all possible, try to get one who has taken this path themselves.

A good supervisor won’t only limit their support to physical help , such as introducing you to other researchers, suggesting relevant literature and facilitating data access, but also to emotional and mental support. A supportive supervisor maintains a good attitude and demonstrates concern for your research project. They should be keen to see you excel, help you refine your research skills and make you feel confident enough to experiment with your research approach and share your work whenever the opportunity presents itself, whether it is at a conference or in your place of work. Although you will be responsible for navigating yourself through your doctorate, a good supervisor will act as your safety net for when you get a little lost.

5. Know Yourself

Even the most organised people aren’t prepared for the workload that comes with a PhD. Make a time chart and be truly honest with yourself about how much time you have in the day, it might not be as much as you would think once you’ve factored everything in. Doing a part time PhD requires about 15-20 hours of commitment per week – will you have 15 hours to spare alongside your job, family and friends and other obligations? If not, then working and studying at the same time will most likely be out of your reach.

These considerations will hopefully put you in a better position to tackle a PhD while working part time (or dare I say it, working full time!). Even still, tackling a several year long PhD programme whilst working is probably one of the hardest things you will do, so if you decide to go down this road, much kudos to you.

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Can I do a PhD while working?

Study tips Published 31 Mar, 2022  ·  4-minute read

Completing a Doctor of Philosophy requires some serious dedication. But committing all your time to research can leave a significant gap in your income. So, can you work and do a PhD at the same time? Let’s find out.

We spoke with two UQ PhD candidates, Chelsea Janke and Sarah Kendall, to get some insights into whether you can get a PhD while working – and how to balance your work with your research.

Can you get a PhD while working?

The simple answer is yes, but we wouldn't exactly recommend it. There’s nothing technically stopping you from continuing to work (at least, to some extent) while you pursue a PhD, but doing a higher degree by research is a big commitment. So, you need to think carefully before you attempt to juggle both.

The more complex answer is that it depends heavily on the type of work you’re doing and how quickly you want to complete your research.

PhD candidates can continue working part time while completing their research. Of course, this depends on the nature of their research and other work.

Keep in mind : some PhD scholarships are only available to full-time candidates and may not allow you to earn more than a certain amount to remain eligible. If you’ve applied or plan to apply for a scholarship, make sure to check the relevant terms.

For  international students , some extra restrictions apply. You can work up to 40 hours per fortnight, but this must not interfere with your full-time study load or your academic performance. Further limitations may apply if you're on an RTP scholarship (maximum 270 working hours per year) or being sponsored by your government.

Doing a PhD while working: full time, part time or casual?

Chelsea is quick to warn us that both working and researching full time is a recipe for disaster.

“A full-time PhD could not be done whilst working full time,” she says.

Doing both part time is feasible, but only if you’re happy to wait a few extra years to see the fruits of your labour.

“I know people who have worked part time and done their PhD part time – usually in the same research group or field,” says Chelsea.

“But keep in mind it took them 7-8 years to finish their PhD; it’s not the most efficient strategy.”

Committing to a full-time PhD while doing some incidental work on the side seems like the most popular approach for candidates, in Chelsea’s experience.

“Most full-time PhD students will pick up some casual work tutoring, marking, helping the lab manager, or assisting other researchers with their work,” she says.

“This means they can do a few hours here and there without their own PhD work being too disrupted.”

Sarah’s circumstances allow her to maintain a part-time job while completing her PhD, though she acknowledges you have to be lucky to be in a position to do so.

“PhD candidates can continue working part time while completing their research; of course, this depends on the nature of their research and other work,” says Sarah.

“Both my research and work are very flexible, and I can complete them whenever suits me.”

Learn about Sarah’s research or read her series about becoming an academic in law .

How to balance work with your PhD

If you plan to work whilst doing your PhD, you will need to manage your time well.

It’s one thing to ask can I do a PhD while working – actually managing to juggle the two is a whole other challenge. Sarah and Chelsea agree that time management is the most important part of making this work.

Sarah suggests keeping a strict schedule to divide your time evenly between your commitments, as this is what works for her.

“I find that I maintain a balance best by setting specific hours to work on my PhD (usually from 9am to 4pm Monday to Friday) and then on my other work commitments (usually Saturdays and sometimes a couple of hours before dinner),” she says.

“The hours you set to work on your PhD and other commitments will depend on whether your other work has set hours though, as well as when you work best – you might get some of your best research and writing done at 5am!”

Top tips for working while doing your PhD

• Only do so if you really want/need to and if you know you can manage the dual workloads.
• Tell your boss. Make sure your employer knows about your plans to juggle a PhD with your workload. See if there’s anything they can do to make the journey easier for you. For example, just like Sarah, your employer may be able to provide you the flexibility to complete your work on a schedule that accommodates your research hours.
• Consider a part-time PhD if cutting your hours or quitting your job isn’t a viable option. Yes, it might take longer. But if it means maintaining a comfortable balance between your research and your current career, it might be the best choice for you.
• Chat with your PhD supervisor. They’ve been there and done that, making them a great source of wisdom when it comes to pursuing a PhD while also balancing your other life commitments. You may also have peers currently doing a PhD who can provide some advice.

Haven’t chosen your supervisor yet? Read these tips for finding a suitable academic. It’s also a good idea to be upfront with your supervisor about your intention to work/research part time, as some supervisors prefer to work with full-time PhD candidates.

• Seek casual work at your university and in your field where possible. By keeping your work and research close together (both in terms of location and mindset), you may find it less challenging to keep on top of both.
• Make sure you’re passionate about your PhD topic . If your research just feels like a second job on top of your usual work, you’ll likely burn out before long. When developing your research proposal , make sure your thesis is providing that spark of curiosity that’s going to keep you inspired to follow through with your research – even on nights when you’re drained from work.

Ready to get started? Whether you’re dedicating yourself to a full-time PhD or keeping a balance between research and work, The University of Queensland is ready to support you.

Learn more about completing your PhD at UQ

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Is it possible to earn a PhD while working? The brutal truth

Working alongside your PhD seems like an attractive proposal until you look at all of the different commitments you need to make to actually get a PhD and submit your dissertation. Working part-time may help PhD students financially but it often comes at an academic cost.

It is possible to earn a PhD while working. However, it requires strict time management and can be very complicated. You have to balance any other significant commitments inside and outside of your PhD.

A PhD is typically the equivalent time commitment as a full-time job. The majority of the PhD students I know work at least 40 hours a week. So, trying to get a PhD while working is very time intensive – 80-hour + weeks.

Some students drop down to a part-time PhD in order to balance all of the particular commitments of a PhD program and working hours.

Whether or not you are a part-time PhD student or you are studying your PhD full-time, here are all of the aspects you should consider if you are considering working alongside your PhD research. This is what you need to know if you are considering getting your doctorate while working.

Can you work during a PhD?

Some institutions full-out ban their PhD students from working full-time alongside a full-time research commitment. They want to make sure that you’re working 100% on your PhD because balancing work isn’t easy.

Although it may not be banned in some institutions it is generally expected that students focus on their research and coursework full-time during a PhD and are therefore not typically able to hold down a full-time job.

Some programs may allow for part-time work, but it is generally not recommended as it can interfere with academic progress.

Additionally, many PhD programs offer funding in the form of stipends or fellowships which can help support students financially during their studies.

There are a few things to consider if you are thinking of working during your PhD.

The first is whether or not you will have enough time to dedicate to both your work and your studies. You don’t want your work to suffer because you are spending too much time on your PhD, or vice versa.

Another thing to consider is how working will affect your funding.

If you are receiving PhD funding or a scholarship from an external source, they may have stipulations on whether or not you can work while receiving their funding. Be sure to check with them before taking on any paid work.

Lastly, you will want to make sure that the work you are doing is related to your field of study. Working in a related field can help you with your research by giving you real-world experience that you can apply to your studies.

Even though some institutions allow you to work, should you?

Should you work during your PhD?

Some students feel that they need to work in order to support themselves during their PhD, while others feel that they can focus solely on their studies.

There are pros and cons to both approaches.

Working during your PhD can help you to cover your living expenses and may even allow you to save some money. However, it can also be a distraction from your studies and may make it more difficult to find time to do research.

I know that I wouldn’t be able to balance the pressures of a full-time job with my PhD studies and, therefore, decided to not have any jobs during my first year – this included jobs inside the University such as demonstrating in undergraduate laboratories.

Therefore, it is possible to do a PhD whilst working full-time but you really have to consider the impact of the extra pressures and commitments

. It is much easier to work alongside your PhD if you have a strong research-based masters degree and your job outside of your degree is flexible enough to allow you to attend different academic commitments such as attending seminars, meeting with advisers, and travelling to conferences.

Ultimately, the decision of whether or not to work during your PhD is up to you.

Consider your financial situation and how working would impact your studies before making a decision.

It can be difficult to juggle work and study commitments, and you may find yourself feeling overwhelmed and stressed. You may also have less time to socialize and enjoy your student life.

So, it’s important to think carefully about whether working during your PhD is right for you.

What type of work can you do during a PhD? Part time or Full time?

During your PhD there are a number of different options that you could consider if you want to (and you are allowed to) get a job.

I do not recommend working full-time alongside your PhD but, there are some options for part-time work to earn a little bit of money alongside your studies.

Full time work

My recommendation is that you do not try to fit a PhD alongside full-time work. Trying to work full time is asking for trouble.

There will be so many more pressures on you that it will not be a very enjoyable experience.

A PhD requires you to be creative.

Creativity comes from having enough mental space to allow your mind to connect new and interesting ideas together. If you are busy with work you will not have the mental capacity to be able to do this effectively.

Therefore, I recommend that you consider at least dropping down to part-time work if you are insistent on pursuing a PhD alongside employment.

I have seen PhD students complete a PhD part-time supported and partly funded by their current place of employment.

Part time work

If you want to know more about the best PhD student part-time jobs check out my full guide – click here for the full article.

There are a variety of part-time jobs that can easily supplement your income during a PhD.

The best PhD student part-time jobs will have flexible hours, provide you with a reasonable hourly rate, and not distract you from your primary goal of completing your PhD.

I have highlighted in my YouTube video, below, all of the different side hustles that PhD students can try if they need to earn a little bit more money.

The common part-time jobs for PhD students include:

• Hospitality
• Customer service
• University-based jobs – such as tutoring, marking exams, student services and working in laboratories
• Online jobs such as user testing, notetaker, and translating.
• Freelancing. Selling a skill that you have two people on services such as Upwork .

Why Should You Worry About Working During Your PhD

There are a number of reasons why you should worry about working during your PhD.

The most important is balancing workload, the fact that you were extending your time in academia by a significant amount, the increased risk of burnout, and ensuring you have enough resources to keep you going for multiple years.

A PhD is just like a full time job.

Therefore, getting a PhD while working full-time will be incredibly difficult. Both commitments will require at least 40 hours per week each.

Nonetheless, if you are able to have full flexibility on your work schedule and you are capable of distance learning for some part of your PhD it may be much more possible.

Many PhD students struggle with just the commitments of earning a doctorate. Consider working alongside your PhD very carefully.

Time it takes

A PhD will typically take between three and seven years. During this time it is extremely stressful and you need to make sure you’re capable of researching at your best for the entire time.

I have always said that a PhD is a marathon and not a sprint. Adding extra years to your PhD if you need to can be worth it. However, you must consider the amount of time it will take you to get your PhD and the potential return on that investment.

Unless you have a particular career secured or in mind for after your PhD the extra years it takes to complete a doctoral degree part-time are generally not worth it.

Burnout is a real consequence of doing a PhD.

By working alongside your PhD you’ll increase your chances of burnout significantly. This is true even if you like to study.

If you are prone to feelings of being overwhelmed I would stay away from earning a PhD whilst working full or part-time.

Slowly introduce part-time work if you need to once you have settled into the general routine of your PhD.

Tips for Earning Your PhD While Working

Here are a few general tips that may help you if you find yourself having to work alongside your PhD:

Talk to everyone involved

Everyone involved in this process needs to be on board. There will be times when you need to ask favours from your supervisor, colleagues, work supervisor or others.

Don’t be afraid to ask for help: Whether it’s from your supervisor, colleagues, or friends and family, don’t hesitate to ask for help when you need it.

This is not a sign of weakness, but simply a recognition that we all need assistance from time to time.

Stay Organized and on Track

Find a routine: Try establishing a set schedule for at least most days of the week and stick to it as much as possible. This will help you to stay focused and make the most of your limited time.

Get Involved in the Research Community

Remember to stay in touch with your research community.

Working part-time or full-time can mean that you miss out on the exciting recent advancements and collaboration with people in your field. Make an extra special effort to attend seminars, talks, and networking events to help progress your research and your academic career.

Don’t squirrel yourself away!

Work with your strengths

Know yourself: Be honest about how well you work under pressure and how much free time you realistically have.

If you know that you work better with a tight deadline, then try to structure your work schedule accordingly.

Personally, I need as much free mental space is possible to perform at my best. Just do what is best for you.

Wrapping up

This article has been through everything you need to consider if you are tempted by earning a PhD while working.

Your PhD programme may dictate whether it is possible to work alongside your PhD. Whether or not it is a good idea will be down to you and if you are able to balance an insane amount of commitments and work.

My general recommendation is that you should focus 100% on your PhD journey and although it is definitely possible you’re going to be at risk of burnout.

Combining part-time PhD’s, part-time jobs, and finding a flexible job that will help keep you focused on the primary goal of finishing your dissertation is the most sensible way of working alongside your PhD.

Dr Andrew Stapleton has a Masters and PhD in Chemistry from the UK and Australia. He has many years of research experience and has worked as a Postdoctoral Fellow and Associate at a number of Universities. Although having secured funding for his own research, he left academia to help others with his YouTube channel all about the inner workings of academia and how to make it work for you.

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Six presumed dead after cargo ship crash levels Baltimore bridge

BALTIMORE — A major Baltimore bridge collapsed like a house of cards early Tuesday after it was struck by a container ship, sending six people to their deaths in the dark waters below, and closing one of the country’s busiest ports.

By nightfall, the desperate search for six people who were working on the bridge and vanished when it fell apart had become a grim search for bodies.

“We do not believe that we’re going to find any of these individuals still alive,” Coast Guard Rear Admiral Shannon N. Gilreath said.

Jeffrey Pritzker, executive vice president of Brawner Builders, said earlier that one of his workers had survived. He did not release their names.

Up until then, Maryland Gov. Wes Moore had held out hope that the missing people might be found even as law enforcement warned that the frigid water and the fact that there had been no sign of them since 1:30 a.m. when the ship struck Francis Scott Key Bridge.

Moore expressed heartbreak after officials suspended the search for survivors.

"Our heart goes out to the families," he said. "I can’t imagine how painful today has been for these families, how painful these hours have been have been for these families."

It was a crushing blow to the loved ones of the missing men, who had waited for hours at a Royal Farms convenience store near the entrance of the bridge for word of their fate. 

Follow live updates on the Baltimore bridge collapse

The tragic chain of events began early Tuesday when the cargo ship Dali notified authorities that it had lost power and issued a mayday moments before the 984-foot vessel slammed into a bridge support at a speed of 8 knots, which is about 9 mph.

Moore declared a state of emergency while rescue crews using sonar detected at least five vehicles in the frigid 50-foot-deep water: three passenger cars, a cement truck and another vehicle of some kind. Authorities do not believe anyone was inside the vehicles.

Investigators quickly concluded that it was an accident and not an act of terrorism.

Ship was involved in another collision

Earlier, two people were rescued from the water, Baltimore Fire Chief James Wallace said. One was in good condition and refused treatment, he said. The other was seriously injured and was being treated in a trauma center.

Moore said other drivers might have been in the water had it not been for those who, upon hearing the mayday, blocked off the bridge and kept other vehicles from crossing.

“These people are heroes,” Moore said. “They saved lives.”

Nearly eight years ago, the Dali was involved in an accident. In July 2016, it struck a quay at the Port of Antwerp-Bruges in Belgium, damaging the quay.

The nautical commission investigated the accident, but the details of the inquiry were not immediately clear Tuesday.

The Dali is operated and managed by Synergy Group. In a statement, the company said that two port pilots were at the helm during Tuesday's crash and that all 22 crew members onboard were accounted for.

The Dali was chartered by the Danish shipping giant Maersk, which said it would have no choice but to send its ships to other nearby ports with the Port of Baltimore closed.

The bridge, which is about a mile and a half long and carries Interstate 695 over the Patapsco River southeast of Baltimore, was "fully up to code," Moore said.

National Transportation Safety Board Chairwoman Jennifer Homendy said that her agency will lead the investigation and that a data recorder on the ship could provide more information.

"But right now we're focusing on the people, on the families," she said. "The rest can wait."

President Joe Biden vowed to rebuild the bridge and send federal funds.

"This is going to take some time," the president warned. "The people of Baltimore can count on us though to stick with them, at every step of the way, till the port is reopened and the bridge is rebuilt."

Speaking in Baltimore, Transportation Secretary Pete Buttigieg echoed the president's promise.

"This is no ordinary bridge," he said. "This is one of the cathedrals of American infrastructure."

But Buttigieg warned that replacing the bridge and reopening the port will take time and money and that it could affect supply chains.

The Port of Baltimore, the 11th largest in the U.S., is the busiest port for car imports and exports, handling more than 750,000 vehicles in 2023 alone, according to data from the Maryland Port Administration.

Writer David Simon, a champion of Baltimore who set his TV crime drama "The Wire" on the streets of the city he once covered as a reporter, warned online that the people who will suffer the most are those whose livelihoods depend on the port.

"Thinking first of the people on the bridge," Simon posted on X . "But the mind wanders to a port city strangling. All the people who rely on ships in and out."

Timeline of crash

Dramatic video captured the moment at 1:28 a.m. Tuesday when the Dali struck a support and sent the bridge tumbling into the water. A livestream showed cars and trucks on the bridge just before the strike. The ship did not sink, and its lights remained on.

Investigators said in a timeline that the Dali's lights suddenly shut off four minutes earlier before they came back on and that then, at 1:25 a.m. dark black smoke began billowing from the ship's chimney.

A minute later, at 1:26 a.m., the ship appeared to turn. And in the minutes before it slammed into the support, the lights flickered again.

Maryland Transportation Secretary Paul Wiedefeld said the workers on the bridge were repairing concrete ducts when the ship crashed into the structure.

At least seven workers were pouring concrete to fix potholes on the roadway on the bridge directly above where the ship hit, said James Krutzfeldt, a foreman.

Earlier, the Coast Guard said it had received a report that a “motor vessel made impact with the bridge” and confirmed it was the Dali, a containership sailing under a Singaporean flag that was heading for Sri Lanka.

Bobby Haines, who lives in Dundalk in Baltimore County, said he felt the impact of the bridge collapse from his house nearby.

"I woke up at 1:30 this morning and my house shook, and I was freaking out," he said. "I thought it was an earthquake, and to find out it was a bridge is really, really scary."

Families of bridge workers wait for updates

Earlier in the day, relatives of the construction crew waited for updates on their loved ones.

Marian Del Carmen Castellon told Telemundo her husband, Miguel Luna, 49, was working on the bridge.

“They only tell us that we have to wait and that they can’t give us information,” she said.

Castellon said she was "devastated, devastated because our heart is broken, because we don’t know how they have been rescued yet. We are just waiting for the news."

Luna's co-worker Jesús Campos said he felt crushed, too.

“It hurts my heart to see what is happening. We are human beings, and they are my folks,” he said.

Campos told The Baltimore Banner that the missing men are from El Salvador, Guatemala, Honduras and Mexico.

Active search and rescue ends

The Coast Guard said it was suspending the active search-and-rescue effort at 7:30 p.m. Tuesday.

"Coast Guard’s not going away, none of our partners are going away, but we’re just going to transition into a different phase," Gilreath said at a news conference.

Maryland State Police Superintendent Roland L. Butler, Jr., said it was moving to a recovery operation. Changing conditions have made it dangerous for divers, he said. 

Butler pledged to "do our very best to recover those six missing people," but the conditions are difficult.

"If we look at how challenging it is at a simple motor vehicle crash to extract an individual, I'm sure we can all imagine how much harder it is to do it in inclement weather, when it's cold, under the water, with very limited to no visibility," he said.

"There's a tremendous amount of debris in the water," which can include sharp metal and other hazards, and that could take time, Butler said.

'A long road in front of us'

Built in 1977 and referred to locally as the Key Bridge, the structure was later named after the author of the American national anthem.

The bridge is more than 8,500 feet long, or 1.6 miles. Its main section spans 1,200 feet, and it was one of the longest continuous truss bridges in the world upon its completion, according to the National Steel Bridge Alliance .

About 31,000 vehicles a day use the bridge, which equals 11.3 million vehicles per year, according to the Maryland Transportation Authority.

The river and the Port of Baltimore are both key to the shipping industry on the East Coast, generating more than $3.3 billion a year and directly employing more than 15,000 people.

Asked what people in Baltimore can expect going forward, the state's transportation secretary said it is too early to tell.

"Obviously we reached out to a number of engineering companies, so obviously we have a long road in front of us," Wiedefeld said.

Julia Jester reported from Baltimore, Patrick Smith from London, Corky Siemaszko from New York and Phil Helsel from Los Angeles.

Julia Jester is a producer for NBC News based in Washington, D.C.

Patrick Smith is a London-based editor and reporter for NBC News Digital.

Phil Helsel is a reporter for NBC News.

Corky Siemaszko is a senior reporter for NBC News Digital.