Welcome to the I-270 North Project

Road closure map

Closure
Eastbound I-270
Exit Ramp at
New Halls Ferry Road

From November 21 through December 5, the eastbound I-270 ramp will be closed at New Halls Ferry Road

Road closure map

Closure
Dunn Rd to WB I-270
Hanley/Graham to Coldwater Creek

From November 2 through the 14th, the westbound ramp and Dunn Road eastbound will be closed

Road closure map

Closure
Hanley/Graham to EB I-270

Beginning October 31, the I-270 eastbound ramp at Hanley Graham will be closed, through December 31, 2022.

People gathered on bridge for ceremonial ribbon cutting

Closure
EB Dunn Road
New Halls Ferry to Washington/Elizabeth

Starting September 21 and lasting 6 months, Eastbound Dunn Road will closed from New Halls Ferry to Washington/Elizabeth

Map showing expected location of Eastbound Dunn Road closure between bridge over Coldwater Creek and Hanley/Graham

Closure EB Dunn Road
Coldwater Creek to Hanley/Graham

Starting September 19 and lasting 60 days, Eastbound Dunn Road will closed between bridge over Coldwater Creek and Hanley/Graham

People gathered on bridge for ceremonial ribbon cutting

SB Lindbergh Bridge
Open

On July 11, 2022, the southbound Lindbergh bridge over I-270 and the westbound entrance ramp to I-270 were opened.


Detour
SB 367 to EB I-270

Get more information on the southbound Route 367 to eastbound I-270 detour starting Friday, May 20.


  Map
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WB Pershall Road from New Florissant and Hanley
Closed

2021 in Review!

Please celebrate this year's progress on the I-270 North Project with us!

Thanks for your support and excitement!

Build! Progress! Together!


  Launch Tour
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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.

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.

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Announcements and Construction Alerts

2022 Closures

Aug 2021

  • Pershall Road Lane Closure Elizabeth to Old Halls Ferry Closure Duration: 9 Months (Continuation of 2021 Work)

Nov 2021

  • Dunn Road Lane Closure Old Halls Ferry to West Florissant Closure Duration: 3 months (Continuation of 2021 Work)

Feb 2022

  • New Florissant Closed at 270 - Bridge Demo (East Bound) Closure Duration: 1 Weekend

March 2022

  • North and South Bound New Florissant Lane Closures Closure Duration: 2 Weeks

May 2022

  • Pershall Road Lane Closure Hanley to New Florissant Closure Duration: 4 Months

Jul 2022

  • East Bound 270 Exit to New Florissant Closed Closure Duration: 1.5 Months
  • East Bound 270 Exit Ramp to West Florissant Closed Closure Duration: 2 Months
  • East Bound 270 On Ramp from Washington/Elizabeth Closed Closure Duration: up to 3 Months
  • South Bound 67 at Southern Tie-in to Existing South Bound 67 Closure Duration: 1 Weekend
  • East Bound 270 to North Bound/South Bound 67 Ramp Closed Closure Duration: 1 Week
  • South Bound 67 to West Bound 270 Ramp Closed Closure Duration: 3 Weeks
  • Taylor to South Bound 67 Closed Closure Duration: 3 Weeks

Aug 2022

  • East Bound 270 On Ramp from Hanley/Graham Closed Closure Duration: 2 Months
  • Dunn Road Closed at Taylor Closure Duration: 3 Weeks
  • New Halls Ferry Closed at 270 - Bridge Demo (East Bound) Closure Duration: 1 Weekend
  • South Bound 67 Closed at Taylor - 67 Traffic Detoured thru Taylor Closure Duration: 1 Month

Sep 2022

  • West Bound 270 On Ramp from New Halls Ferry Closed Closure Duration: 3 Months
  • New Florissant Closed at 270 - Bridge Demo (West Bound) Closure Duration: 1 Weekend

Oct 2022

  • East Bound 270 Exit Ramp to New Halls Ferry Closed Closure Duration: 2 Weeks
  • Ramp from Hanley/Graham to Eastbound I-270 Closed Closure Duration: 2 Months

Nov 2022

  • Dunn Rd westbound to I-270 westbound ramp and Dunn Road eastbound Closed Closure Duration: 2 Weeks
  • Dunn Road Closed between Lynn Haven and 637 Dunn Road Closure Duration: 1 Month

Dec 2022

  • East Bound Dunn Road Closed Coldwater Creek to Graham Closure Duration: 2 Months
  • West Bound 270 On Ramp from Hanley/Graham Closed via Dunn Road Closed Closure Duration: 1 Week
  • Dunn Road Lane Closure West Florissant to Washington Closure Duration: 3 Months
  • West Bound 270 On Ramp from West Florissant Closed Closure Duration: 1 Month
  • East Bound Dunn Road Closed Coldwater Creek to Graham Closure Duration: 2 Months

July 2023

  • West Bound 270 to North Bound 367 Ramp Closed Closure Duration: 2 Months

Project team:

Missouri Department of Transportation I‑270 Project Millstone Weber Parsons

This schedule is subject to change.

Announcements

MoDOT postpones closure of eastbound I-270 exit ramp at New Halls Ferry Road until November 21

Drivers who regularly use the eastbound I-270 exit ramp at New Halls Ferry should note that the Missouri Department of Transportation (MoDOT) has changed the ramp closure date from November 15 to November 21, due to inclement weather.

The closure is now scheduled to begin on Monday, November 21 at 7a.m. The duration of the closure has not changed. The ramp will be closed for two weeks.

MoDOT to completely close New Florissant Road between Dunn and Pershall roads, November 18-20

The Missouri Department of Transportation (MoDOT) will completely close New Florissant Road between Dunn Road and Pershall Road in both directions and reduce both eastbound and westbound I-270 traffic to one lane over Route N, between 8 p.m. Friday, November 18 and 5 a.m. Monday, November 21. Read More

MoDOT to close the I-270 westbound entrance ramp at Hanley Rd./Graham Rd. Nov. 2

The Missouri Department of Transportation (MoDOT) will close the westbound I-270 entrance ramp from Hanley Road/Graham Road this week. This two-week closure starts Wednesday, November 2, at 7 a.m., weather permitting. 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.”

— Timothy 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.”

— Timothy 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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