Welcome to the I-270 North Project
Dunn Road Closed
Beginning Tuesday, September 7, Dunn Road will be closed for approximately 2 months from Old Halls Ferry to Linnel Drive.
WB Pershall Road Closed
Beginning Monday, August 9, WB Pershall Road will be closed for approximately 9 months from West Florissant Ave to Elizabeth Ave.
EB Dunn Road Closed March 1
Beginning Monday, March 1, EB Dunn Road from GRAHAM TO WASHINGTON will be closed for approximately 7 months.
WATCH a video and learn how to NAVIGATE this detour or view it on our interactive map.
Celebrate our progress and Thank You for your encouragement and your excitement as we Build. Progress. Together!
MAKE it HOME
by slowing down in work zones
MoDOT and its contractor Millstone Weber are keeping safety at the forefront of the construction process and maximizing work zone safety for the public and our workers. Let's all arrive home alive.
Announcements and Construction Alerts
- East Bound Dunn Road closed from Washington/Elizabeth to Hanley/Graham Closure Duration: 7 Months
- Dunn Road closed from Village N Dr to Breezy Point Lane Closure Duration: 2 Months
- I‑270 closed at West Florissant Closure Duration: 3 Days
- West Florissant Bridge over I‑270 closed Closure Duration: 4 months
- North Bound US 67 (Lindbergh) to East Bound I‑270 Ramp Closed Closure Duration: 1 Week
- West Bound I‑270 to North Bound US 67 (Lindbergh) Ramp Closed Closure Duration: 1 Week
- North Bound US 67 (Lindbergh) to Taylor Road Ramp Closed Closure Duration: 2 Weeks
- Dunn Road Closed from Old Halls Ferry to Linnel Closure Duration: 2 Months
- West Bound I‑270 Exit Ramp to Old Halls Ferry Road Closed Closure Duration: 2 Months
- Dunn Road Closed at West Florissant Closure Duration: 1 Month
- Lane Closures at West Florissant Closure Duration: 1 Month
- West Bound I‑270 to North Bound MO 367 Ramp Closed Closure Duration: 2 Months
- West Bound Pershall Road closed from Washington/Elizabeth to Old Halls Ferry Closure Duration: 9 Months
- West Bound I‑270 to Hanley/Graham Ramp Closed Closure Duration: 1 Month
- West Bound Pershall Road closed from Hanley/Graham to New Florissant (Rt N) Closure Duration: 4 Months
This schedule is subject to change.
MoDOT to close I-270 exit ramp and Dunn Road at Old Halls Ferry Road on September 7
Drivers who use I-270 and Dunn Road near Old Halls Ferry Road should be aware of a two-month ramp and road closure beginning September 7. Read More
MoDOT to close westbound lane of Pershall Road beginning August 9
Drivers who use Pershall Road between West Florissant Avenue and Elizabeth Avenue should be aware that beginning August 9, MoDOT will close the westbound lane of Pershall between West Florissant and Knollstone Drive. For nine months, only one eastbound lane will remain open to traffic while MoDOT begins converting this portion of Pershall to an eastbound one-way outer road. Read More
MoDOT I‑270 Project announces I‑270 and Dunn Road impacts beginning March 1
Drivers who regularly use Dunn Road along I‑270 should be aware that MoDOT will close the eastbound lane of Dunn between Graham and Washington, beginning March 1. For seven months, a single lane will carry westbound traffic, while MoDOT begins conversion of this portion of Dunn to westbound traffic only. Read More
Closure WB Pershall Rd from W Florissant Ave to Elizabeth Ave
Closure Dunn Road at West Florissant
Closure Dunn Road from Graham to Washington Road
Closure Pershall Rd. between Ford Ln. and Polson Ln.
Closure NB Lindbergh to WB 270 on ramp
The I-270 North Design Build Project will improve mobility on the mainline, at interchanges, and on the outer roads. It aims to reduce traffic congestion faced by local users and interstate travelers.
Interstate 270 North (I-270N) from James S. McDonnell Boulevard to Bellefontaine Road in St. Louis County.
Construction is anticipated to begin Spring 2020 and completed December 2023.
The I-270 project is needed to improve current conditions on I-270, including outdated highway design, deteriorating infrastructure, and reducing traffic congestion.
What we are hearing
On June 12 we demolished the Old Halls Ferry Bridge and here 100 days later, we are opening the New Old Halls Ferry Bridge....This is the first of 12 bridges that will be replaced as part of this project. ”
Iâ€™ve been watching the creating of this, and it's just amazing. It is going to be great! ”
I feel elated. It looks beautiful. I think it will have a positive impact. It is a big improvement from what was there. Congratulations to MoDOT and hopefully we will see you continue to build up north county. ”
We are excited about the additional safety features that this bridge will bring to the area....This is only one of the additional enhancements to the North County area as we continue to facilitate the mobility needs of North St. Louis County. ”
All of us here at Millstone Weber are proud to be celebrating this project milestone with our partners, MoDOT, the entire I-270 North project team and this community. ”
Missouri Department of Transportation and our contractor Millstone Weber are celebrating the first milestone in the reconstruction of interstate I-270 in North County. This is the largest investment of federal and state tax dollars in the entire state at this time. It is a $278 million reconstruction. Thatâ€™s a big project! ”
This is a great project for the community, and it is much needed. I would like to congratulate MoDOT, St. Louis County and the municipalities in this area. ”
The MW team is excited to have this bridge open and we want to say congratulations to MoDOT, our partner, the citizens of North County and to this entire region for this opportunity to create another sustainable transportation corridor in our community. ”
In the Spring of 2020, MoDOT began work on a project that would change the face of transportation in North County. I want you to celebrate with us as we move into completion of the New Old Halls Ferry Bridge. It's safer! It's bigger and it's better! ”
Iâ€™m certainly excited to be able to witness the ribbon cutting for the NEW Old Halls Ferry Bridge...It is an excellent example of north county excellence and what it is we want to be about in our community. So thank you MoDOT for the investment. ”
This project is one of the many success stories that is helping advance our region in supporting the global supply chain. ”
We thank MoDOT and the Bi-State Regionalism of our elected leaders for supporting this $278 million project and for the accelerated project schedule. ”
St. Louis Christian College thanks the Missouri Department of Transportation for all of your hard work in improving Interstate 270. Thank you so much. ”
I'm glad we're devoting the time, materials and dollars to the citizens of North County so that in the end, they will have a nice, new infrastructure that's safe. ”
I just want to congratulate MoDOT and its partners. We look forward to the next couple of years and the great outcome at the end. ”
I'd like to say congratulations on the groundbreaking of the much needed I-270 North Project. ”
We appreciate all of the hard work that's been done to get us to this point, and now let the construction begin. ”
MoDOT in conjunction with all of the key stakeholders, as well as all of the municipalities surrounding this area and homeowners have gotten together over the last two years, with MoDOT facilitating the meetings making it easier for us to give input. Now it's time for this project to launch. ”
It's already thriving, but with the additions and all of the things that they are going to do to this highway, it's going to be even better. ”
With so many working people in our community, it will be important to my residents to have a new and more efficient highway to shop, to go to work and to travel. ”
With so much unfortunate news that we are hearing each and every day during these trying times, it is so refreshing to announce and to celebrate a major development project in north county that will benefit so many people. ”
It is an honor and a privilege to participate in MoDOT's Virtual Groundbreaking to kick-off the I-270 North Project. This project is particularly important for Christian Hospital. ”
The I-270 North Project brings to life a well thought -out design that improves safety, and adds lanes for better mobility and less congestions. On behalf of the Christian North East family, I want to thank the entire MoDOT team for all of your hard work. ”
With the first phase of this project starting in Florissant, MO and closing a portion of Elizabeth, we are all very excited to see this get started. ”
I-270 is one of the most traveled corridors in the St. Louis Metropolitan Region and this is a much-needed upgrade. Thank you to everyone who made this project happen. ”
The $278 million I-270 North project is an investment in the infrastructure, workforce and economic development of St. Louis County. This project is a positive economic development tool for North County. ”
I'm grateful for MoDOTs commitment to the community that relies on I-270. ”
I'm also excited about this upgrade, even through the temporary inconveniences because it will increase mobility with well-thought out plans and new technology that will help to make North County the place to live, work and play. ”
So on behalf of my family and those that I am blessed to represent, thank you MoDOT and here is to a project that is on time, on budget and displays North County excellence. ”
I'm excited for the I-270 North Project to begin as this will eliminate a lot of the accidents and travel clusters that happen on a daily basis. So, congratulations I-270 North Team and I look forward to when everything is complete. ”
I'm glad that the Missouri Department of Transportation is moving forward with plans to update the I-270 North Corridor. I know the hard work and dedication shown by everyone who came together to help make this project a reality, including the MoDOT staff. ”
Congratulations to the North County Community and MoDOT for this Virtual Groundbreaking for the $278 million dollar I-270 North Project. ”
I am excited that the I-270 project has begun. North County has been in need of improved highways to reduce congestion and accidents along this corridor. ”
Thanks to MoDOT for all of these great upgrades. They are much needed and we all will be safer commuting on I-270. So, stay safe St. Louis and thank you MoDOT. ”
I'm very excited about the upgrades happening with I-270. The upgrades throughout the corridor, the safety precautions on the outer roads (etc.,) — I'm really looking forward to it. ”
I'm looking forward to the changes they are going to make in North County. I think it's well overdue and I care about the area that I live in. ”
Our community will flourish, it will look better, it will be better. When people come up and down 270 or West Florissant they will see our facelift and I'm quite sure they will be coming back. ”
I'm really pleased to see that they are starting that now. We really need that as I mentioned before and I think people will really appreciate it. ”
… may slow down traffic temporarily for a certain period of time but again it's important to renovate the highway and make traffic even better in the long run. That's the important thing. In the long run. ”