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I-270 North Environmental Assessment


I-270 North Public Meeting

I-270 North Virtual Public Meeting

The virtual public meeting page will be hosted until August 20, 2013


I-270 is one of the most travelled corridors in the St. Louis metropolitan region.


Commercial drivers, residents and commuters have often expressed concern about daily backups and congestion on I-270 between I-70 and the Chain of Rocks Bridge, especially during evening rush hours. They also express concerns about the safety of the entrance and exit ramps on Dunn Road that require crossing oncoming traffic.

The I-270 North Environmental Assessment is the next step in addressing congestion, safety, and mobility, as well as accessibility and aging infrastructure along the interstate in north St. Louis County. The Missouri Department of Transportation (MoDOT), along with the Federal Highway Administration (FHWA), is conducting the study.

The following information was presented at the public meeting MoDOT held at St. Louis Community College Florissant Valley on July 30, 2013.

Please feel free to review the information -- if you have any comments or questions, please feel free to fill out the comment form below.

Study Overview (7 pages, 620kb)

National Environmental Policy Act (NEPA)  (5 pages, 417kb)

Issues, Goals and Vision for I-270  (5 pages, 300kb)

Performance Measures (6 pages, 265kb)

Your Involvement and Input (5 pages, 299kb)


Please fill out this comment form with any questions or comments about the I-270 North Environmental Assessment.    Please save the fillable form and email it to: SL270NorthEA@modot.mo.gov

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