Broadway at Lee Gulch Culvert Repair and Underpass

  • Project typeStorm Sewer Repair and Trail Improvements
  • Project statusUnder Construction
  • StartJuly 2025
  • CompletionOctober 2026
Area map of Lee Gulch at Broadway project

Project Overview

The City of Littleton will replace a deteriorating 66” Corrugated Metal Pipe under Broadway to prevent road failure and flooding concerns. This culvert lies 30 feet below roadway surface and will require full replacement.

In 2024, crews determined an aging metal culvert beneath Broadway just north of Jamison Avenue was deteriorating. While city engineers and specialists with Mile High Flood District were able to temporarily stabilize the culvert, they also confirmed it must be fully replaced to ensure long-term safety and stability.

Replacing the culvert will require digging a 30-foot-deep trench to remove the old, damaged material and replace it with a more durable concrete pipe. This will require reducing traffic to one lane in each direction on Broadway for the duration of the project. While digging into a thoroughfare as heavily traveled as Broadway is rare, it also provides an opportunity to tackle a long-desired project: adding a pedestrian underpass beneath Broadway to connect the east and west sections of the Lee Gulch Trail, offering residents on the east side of Broadway safer access to the High Line Canal Trail on the west side. 

Currently, pedestrians and bicyclists traveling along the Lee Gulch Trail must detour 800 feet to cross Broadway at the high-traffic intersection with Jamison Avenue, and cross an access route to AdventHealth Littleton Hospital, risking conflicts with vehicles. A pedestrian underpass at this location has been identified for decades as a goal in numerous local planning efforts, including the public-led Broadway Corridor Study and the Littleton Linkages Trail Study, but was generally considered a longshot due to the challenges of major work beneath Broadway.

The project  includes:

  • Removal of approximately 260 linear feet of 66” corrugated metal pipe (CMP) and replace with 72” reinforced concrete pipe (RCP).
  • Install 10 ft x 12 ft pedestrian underpass under Broadway.
  • Trail improvements along Lee Gulch Trail

Lee Gulch at Broadway conceptual site plan

Schedule Highlights

This project will be approximately 1 year for completion with roadway disturbance lasting approximately 6 months.

Traffic Impacts

Work in Broadway will be completed in 2 phases – east and west side. At least one lane in each direction will be available during construction and two southbound lanes will remain open during project construction. Interim lane closures may be expected.

Contact Information

Sarah White, Project Manager
Water Resources Manager
swhite@littletonco.gov
303-795-3826

Location

7652 S Broadway, Littleton 80120  View Map

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