St. Louis District

Construction I-44 Meramec River

Meramec River Bridges

Construction continues on the I-44 Meramec River Bridge project just west of I-270

Study St. Charles County Missouri Route N Wentzville Lake St. Louis

Route N (St. Charles County) Study

MoDOT, along with FHWA, is conducting a National Environmental Policy Act (NEPA) Study on Route N from west of South Point Prairie Road east to the I-64/Route 364 interchange.

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Roadway conditions

Get your real-time roadway conditions around St. Louis at Gateway Guide

I-44 construction in St. Louis City

MoDOT is replacing or renovating several bridges in St. Louis City along I-44. See more about those projects, or others along I-44 here.

Latest News

  • St. Louis Work Zones for July 9- July 15

    07/08/2020

    ST. LOUIS – Drivers who plan to use Jefferson in the city of St. Louis near Interstate 44 this weekend will need to find alternate routes as MoDOT will close the roadway under the interstate to remove the westbound bridge over Jefferson.

    Crew...

  • MoDOT to close Jefferson under I-44 this weekend.

    07/07/2020

    ST. LOUIS – Drivers who plan to use Jefferson near Interstate 44 this weekend will need to find alternate routes as MoDOT will close the roadway under the interstate to remove the westbound bridge over Jefferson.

    Crews will close Jefferson, in...

Other construction projects

I-270 NORTH Project

The I-270 North Project is the next step toward improvements along interstate 270 from I-70 to just west of the Riverview interchange.

Riverview resurfacing project

See the latest information on the Riverview (Route H) resurfacing project.

Route AB (Ladue) bridge replacement

Crews have closed Ladue Road between Mason and I-270 until August 2020 for bridge replacement.

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Multimedia area

Photos & video

    

MoDOT Flickr
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Concrete for the Meramec River Bridge foundations

Meramec Bridge

      

Photos on Flickr
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Sliding the Poplar Street Bridge 9 feet downstream

Moving the PSB

     

Video on YouTube
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Construction on Route 109 near Wildwood

Work on Route 109

      

Photos on Flickr