Missouri Route 115 Safety and Operational Improvements in St. Louis County

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Route 115 Frequently Asked Questions (Construction)

Districts Impacted

St. Louis

Counties Impacted

St. Louis

Route Impacted

115

Work Type

Safety and Operational Improvements

Planning Phase

Project Summary

MoDOT is implementing a project to address the aging pavement and pedestrian facilities along Natural Bridge Rd. (Route 115) from Lucas & Hunt Rd. to the St Louis city limits. As part of the project, existing sidewalks along the corridor will be upgraded to meet requirements of the Americans with Disabilities Act (ADA). Constructing new sidewalks will also provide a continuous pedestrian accessible route along the corridor.

Improvements for this portion of the corridor will include:

Pavement resurfacing and new pavement markings
Upgrading the existing sidewalks and curb ramps to meet ADA requirements
Replacing several existing entrances to improve the pedestrian walking paths to meet ADA requirements
Adding additional midblock crossings and bumpouts (extends the width of the sidewalk and curb line at crosswalks and other locations to keep pedestrians safer)
Adding additional lighting for the Pine Lawn area of the corridor
Adding Rectangular Rapid Flashing Beacons (RRFBs)

CONSTRUCTION UPDATES - July 2026

JULY 9 -- During construction, MoDOT found basements and old coal chutes underneath existing sidewalk, which is to be removed and replaced as part of the project between Rossiter and Francis Avenues. MoDOT inspected these voids underneath the existing sidewalk and the inspections were completed in June 2026. Because of this unforeseen discovery, the project is being delayed. A public meeting was held on July 7, 2026. For more information, click HERE and on the link below to view information provided during the public meeting.

JULY 28 -- MoDOT would like to thank the public for attending the July 7 public meeting updating residents on the progress of construction on the Route 115 (Natural Bridge Road) project from Route U (Lucas-Hunt Road) to the St. Louis City limits east of Jennings Station Road. We received 79 comments about the project with a significant majority stating the preference of keeping the original design of two lanes in each direction on Route 115 within the City of Pine Lawn and matching the rest of the project corridor. MoDOT has determined to keep the original design and move forward with finding a solution to replace the sidewalks over existing basements and old coal chutes within this short section of the Route 115 corridor.

CONSTRUCTION UPDATE DISPLAY BOARDS, JULY 2026

Project Milestones

Complete

Design Phase

Through Fall 2023

Complete

Public Information Meeting

January 26, 2023, 4-6 p.m.
Pine Lawn City Hall
6250 Steve Marre Ave, 63121

Please see preliminary designs below.

Complete

Right of Way Acquisitions

Spring 2023

Complete

Project Advertised

Fall 2023

Complete

Construction Contract Awarded

Winter 2024

In Progress

Construction Begins

Spring 2025

Complete

Public Meeting

Tuesday, July 7, 2026; 4-6 p.m.
Pine Lawn City Hall
6250 Steve Marre Ave. 63121

If you missed the public meeting, you may use the link below to view the informational display boards and share your thoughts on the comment form. All comments must be received by the close of business on Tuesday, July 21.

CONSTRUCTION UPDATE DISPLAY BOARDS, JULY 2026

FREQUENTLY ASKED QUESTIONS

COMMENT FORM

Delayed

Project Completed

September 2026

Due to unforeseen circumstances during construction, the project will be delayed.

What are the anticipated impacts during construction?

Most of the resurfacing work will take place overnight, with up to two lanes closed. Daytime work will include lane closures and some traffic shifts. Many of the entrances to businesses or subdivisions will be rebuilt. MoDOT and the contractor will work with residents and businesses to schedule this work and provide least disruption as possible.

Is MoDOT purchasing property from landowners?

MoDOT will need to purchase some property and/or obtain easements in order to construct the additional sidewalks and ADA improvements. A Right of Way representative will be contacting affected landowners to begin the acquisition process.

Construction Update with Awarded Plans and Alternate Concept (July 2026)

Click HERE to view ALL of the project display boards that were shared during the July 7, 2026 public meeting. The boards provide a construction update on the awarded plans, as well as an alternate concept. Note: The alternate concept only covers the Route 115 project from Ridgedale Ave. to St. Louis City limits. After you have viewed the boards, please take a few minutes to share your thoughts on the project by completing the comment form. Comments must be received by the close of business Tuesday, July 21, 2026.

COMMENT FORM