CLOSURE Intersection of Dunn Rd and Washington St closed View Detours

Welcome to the I-270 North Project

Navigating Roundabouts

A roundabout is a one-way circular intersection that channels traffic around a central island without traffic signals. Watch this video from MODOT to learn more!

Bellefontaine Roundabout to Open by 11/6

Intersection of Dunn Road and Washington Street

Closure
Dunn Road at Washington St

The closure will allow the removal of the existing intersection pavement and rebuilding the intersection with new pavement to connect to the new Washington St./Elizabeth Ave. bridge over I-270.

Bridge near end of construction

NEW!
Old Halls Ferry Bridge

Congrats North County St. Louis, Millstone Weber, and MoDOT for the NEW Old Halls Ferry Bridge. Celebrate our virtual ribbon cutting with us and explore the bridge, it's construction, and new features.

Launch Tour   
Roads

Bellefontaine
& Dunn Rd

Entrance Ramp Closure

MoDOT will close Bellefontaine Road entrance ramp to westbound I-270 at Dunn Road beginning September 8.

Washington St. /
N. Elizabeth Ave.

Bridge Demolition

Watch our drone footage of the Washington St. / N. Elizabeth Ave. Bridge Demolition. The new bridge is scheduled to be open to traffic around Thanksgiving of this year.

    Detour
Father and son wearing high-visibility clothing and hard hats standing outside a highway construction zone.

HELP US
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.


Pershall Road

Pershall Road
Closure

Closed between Ford Ln. and Polson Ln. beginning Tuesday, 08/04 at 9 a.m.


Lindbergh Interchange

NB Lindbergh
Ramp Closure

Construction is ramping up! Beginning June 8th, 2020, the ramp from NB Lindbergh to I-270 will be closed for construction.

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Announcements and Construction Alerts

2020 Detours Schedule

April 2020

  • I-270 EB off-ramp to Washington/Elizabeth Closure Duration: 1.5 years

June 2020

  • I-270 EB on-ramp from New Florissant Closure Duration: 3 months
  • Old Halls Ferry over I-270 Closure Duration: 4 months
  • NB Lindbergh to WB I-270 loop ramp Closure Duration: 2 years

August 2020

  • Pershall Road near Coldwater Creek Closure Duration: 18 Months
  • Dunn Road at Old Halls Ferry Closure Duration: 1 Month
  • Bellefontaine to WB I-270 Ramp Closure Duration: 3 Months

Aug/Sept 2020

  • Both Directions I-270 at Washington/Elizabeth Closure Duration: 3 Days
  • Washington/Elizabeth over I-270 Closure Duration: 3 Months

Sept 2020

  • Pershall Road between New Halls Ferry and Old Halls Ferry Closure Duration: 1 Month

Oct 2020

  • Dunn Road Closed at Washington Closure Duration: 1 Month

Nov 2020

  • Pershall Road Closed at Elizabeth Closure Duration: 1 Month

Project team:

Missouri Department of Transportation I-270 Project Millstone Weber Parsons

This schedule is subject to change.

Announcements

News Release: MoDOT will close Dunn Rd. at Washington St. starting Monday, October 12 at 6 a.m.

Motorists who regularly use I-270 in north St. Louis County should be aware that the Missouri Department of Transportation will close the intersection of Dunn Rd. and Washington St. at 6 a.m. Monday, October 12 for three weeks. Read More

(Updated October 15, 2020)

News Release: MoDOT will close eastbound and westbound lanes of I-270 north at Washington/Elizabeth for two nights next week

Motorists who regularly use I-270 in North St. Louis County should be aware that the Missouri Department of Transportation will close all eastbound I-270 lanes at Washington/Elizabeth nightly beginning Friday, October 16. Read More

News Release: MoDOT will close I-270 North at Lindbergh Blvd. for 15-30 minute intervals Friday night - early Saturday

Drivers who plan to travel I-270 near Lindbergh Blvd. this weekend should be aware that the Missouri Department of Transportation (MoDOT) will close both eastbound and westbound I-270 at Lindbergh for 15-30-minute intervals throughout Friday night and Saturday morning. Read More

News Release: MoDOT will close Bellefontaine Road entrance ramp to westbound I-270 at Dunn Road beginning September 8

Westbound traffic will detour using northbound Dunn Rd. to the intersection with Benham Rd. and take southbound Route 367 to access westbound I-270. All detours will be marked. Read More

News Release: MoDOT closes I-270 North this weekend at Washington Street/Elizabeth Avenue for bridge demolition

Crews will close I-270 in both directions from 9 p.m. on Friday, August 28 until 5 a.m. Monday, August 31 to demolish the Washington Street/Elizabeth Avenue bridge over the interstate. Read More

Project Questions

What

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.

Where

Interstate 270 North (I-270N) from James S. McDonnell Boulevard to Bellefontaine Road in St. Louis County.

When

Construction is anticipated to begin Spring 2020 and completed December 2023.

Why

The I-270 project is needed to improve current conditions on I-270, including outdated highway design, deteriorating infrastructure, and reducing traffic congestion.

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Contact us

Have a question, comment or want to receive project updates and learn about public meetings? Sign-up for email updates and send us your comments or questions by completing the following form.

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. ”

— Justin Wolf, I-270 North Project Engineer

I’ve been watching the creating of this, and it's just amazing. It is going to be great! ”

— Cathy Awad, area resident

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. ”

— Arnold Hinkle - President Pro-Tem, City of Black Jack

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. ”

— Betherny Williams, MoDOT North Area Engineer

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. ”

— Brandy Broeckling - Millstone Weber I-270 North Project Manager

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. That’s a big project! ”

— Tom Blair, St. Louis District Engineer

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. ”

— Rochelle Walton Gray, St. Louis County Councilperson, 4th district

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. ”

— Crystal Allen Dallas, Excel Business Concepts

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! ”

— Nina M. Thompson, (Communications Coordinator (and local resident) for the I-270 North Project

I’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. ”

— Tommie Pierson, Jr. , State Representative

This project is one of the many success stories that is helping advance our region in supporting the global supply chain. ”

— Mary Lamie, Executive VP, Multi-Modal Enterprises, Bi-State Development

We thank MoDOT and the Bi-State Regionalism of our elected leaders for supporting this $278 million project and for the accelerated project schedule. ”

— Mary Lamie, Executive VP, Multi-Modal Enterprises, Bi-State Development

St. Louis Christian College thanks the Missouri Department of Transportation for all of your hard work in improving Interstate 270. Thank you so much. ”

— Steve Naglak, VP Student Life, St. Louis Christian College

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. ”

— Deanna Venker, Director of Transportation and Public Works, St. Louis County

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. ”

— Deanna Venker, Director of Transportation and Public Works, St. Louis County

I'd like to say congratulations on the groundbreaking of the much needed I-270 North Project. ”

— Dawn Perkins, Federal Highway Administration, Missouri Division

We appreciate all of the hard work that's been done to get us to this point, and now let the construction begin. ”

— Dawn Perkins, Federal Highway Administration, Missouri Division

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. ”

— John Bommarito, President of The Bommarito Automotive Group

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. ”

— John Bommarito, President of The Bommarito Automotive Group

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. ”

— Reggie Jones, Mayor of Dellwood, MO

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. ”

— Reggie Jones, Mayor of Dellwood, MO

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. ”

— Rick Stevens, President of 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. ”

— Rick Stevens, President of Christian Hospital

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. ”

— Tom Lowery, Mayor of Florissant, MO

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. ”

— Tom Lowery, Mayor of Florissant, MO

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. ”

— Dr. Sam Page, St. Louis County Executive

I'm grateful for MoDOTs commitment to the community that relies on I-270. ”

— Dr. Sam Page, St. Louis County Executive

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. ”

— Tommie Pierson, Jr., State Representative

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. ”

— Tommie Pierson, Jr., State Representative

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. ”

— Teresa Reed. Alderwoman, Bellefontaine Neighbors

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. ”

— Tommie Pierson, Sr., Mayor Bellefontaine Neighbors

Congratulations to the North County Community and MoDOT for this Virtual Groundbreaking for the $278 million dollar I-270 North Project. ”

— Tommie Pierson, Sr., Mayor Bellefontaine Neighbors

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. ”

— Bishop Larry O. Jones, Greater Grace Church

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. ”

— John Londoff, Jr., Johnny Londoff Chevrolet

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. ”

— Dwayne James

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. ”

— Mrs. LaVerne Mahoney

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. ”

— Mrs. LaVerne Mahoney

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. ”

— Dr. Rance Thomas

… 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. ”

— Dr. Rance Thomas
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