Districts Impacted
Project Summary:
I-229 is a corridor that carries traffic through downtown St. Joseph on the Double-Decker Bridge along the Missouri River. In 2025, the I-229 Moving Forward Environmental Assessment (EA) was completed, and a Finding of No Significant Impact (FONSI) was issued by the Federal Highway Administration (FHWA) for the preferred alternative, which will remove the bridge and replace it with a four-lane roadway.
Now, MoDOT is working with consultants from Burns & McDonnell to gather necessary survey data, right-of-way and railway information to prepare for project design and construction.
Project Timeline
- Survey data collection, determine right-of-way needs, geotechnical investigation, railroad contact, and conceptual design work.
- Working through the Federal Highway Administration (FHWA) process to dedesignate I-229 as an interstate and determine new route name.
- Stakeholder and community outreach.
- Fall 2026: MoDOT will make the determination if the project will be constructed via the Design-Bid-Build or Design-Build process. For more information about these approaches to construction, visit: https://www.modot.org/db.
- Spring 2027: Stakeholder and community outreach.
The Preferred Alternative
The double-decker bridge will be removed and replaced with a new four-lane arterial road constructed at-grade (elevated as necessary for compliance with floodplain and stormwater requirements) in generally the same location as the existing double-decker bridge between the railroad tracks and the Missouri River.
Project News
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Reminder: I-229 Double-Decker Public Meeting to be held tomorrow
ST. JOSEPH, Mo. – Notice is hereby given to all interested persons that a public hearing will be held at the Remington Nature Center – 1502 MacArthur Drive, St. Joseph, MO 64505, tomorrow, Thursday, Aug. 15, 2024, between the hours of 4 p.m. and 6 p...
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NOTICE OF PUBLIC HEARING CONCERNING THE FUTURE OF THE I-229 BRIDGE THROUGH DOWNTOWN ST. JOSEPH
ST. JOSEPH, Mo. – Notice is hereby given to all interested persons that a public hearing will be held at the Remington Nature Center – 1502 MacArthur Drive St. Joseph, MO 64505, on Thursday, August 15, 2024, between the hours of 4 p.m. and 6 p.m...
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I-229 Moving Forward Public Input Opportunity
ST. JOSEPH, Mo. – The Missouri Department of Transportation and local partners are once again asking residents to share their thoughts on the future of the Interstate 229 corridor through downtown St. Joseph, including the Double-decker Bridge. I-229...
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