Loughborough Avenue Bridge Reconstruction Project

The Loughborough Bridge over Union Pacific Railroad is a vital multimodal crossing in Carondelet Park in Saint Louis, Missouri. Carondelet Park is the third largest city park and includes such amenities as playgrounds, walking paths, sports fields, fishing ponds, and the Carondelet YMCA. The bridge connects the public the Park, essential businesses such as a Schnucks Supermarket and Carondelet Public Library, and Interstate 55. The upgrade of this bridge will directly benefit the Carondelet neighborhood and visitors to Carondelet Park by increasing and improving mobility, safety, and access to pedestrians, cyclists, and motorists. 

The project route is found on the Loughborough Avenue Bridge over Union Pacific Railroad. The bridge was originally built in 1959 and widened in 2009 and is currently classified as poor condition. As of 2020, the Average Annual Daily Traffic (AADT) rate was 21,390 and is expected to grow to 28,877 in 2040. This crossing is vital to connecting residents and visitors to the Park, neighborhood resources, and businesses. 

Project Objectives

Replacement of Bridge with a 3-span structure

Bicycle related improvements:
•    Shared-use path/trail

Pedestrian related improvements:
•    Sidewalk reconstruction/ADA compliant sidewalks

Public Comments

The city if St. Louis is seeking public input on potential impacts to Carondelet Park and the Carondelet Connector Trail as part of the replacement of the Loughborough Bridge over the Union Pacific Railroad just to the west of Interstate 55. The bridge was built in the 1950s and needs to be brought up to current standards to meet traffic and safety needs.

The bridge carries over 20,000 cars a day and is vital to connecting residents and visitors to Carondelet Park, neighborhood resources, and businesses. The bridge upgrade will increase and improve mobility, safety, and access to pedestrians, cyclists, and motorists.

The new bridge will be a single span structure with a shared-use path and new sidewalks. The Carondelet Connector Trail is expected to remain open during the majority of construction with only brief closures for specific construction activities.

The project is planned in conjuction with the Missouri Department of Transportation's replacement of the Loughborough Bridge over 1-55. Both projects are expected to begin in Fall 2027 and completed in Fall 2029.

Please share your comments, questions, or concerns about the project, as it relates to potential impacts to Carondelet Park and/or the Carondelet Connector Trail. Your feedback will help the City make informed decisions that reflect community needs and priorities.

Comments can be submitted through this link. The comment period will close on December 19, 2025.

Project Map

View larger map

More Info

Ward

Ward 1

Neighborhood

Carondelet

Park

Carondelet Park

Documents

• Map of the Loughborough Avenue Bridge Reconstruction Project

Photos