Muddy Brook Culvert Replacement


The purpose of the Muddy Brook Culvert Replacement project at Kimball & Marshall Avenue is to replace the failing culvert and temporary bridge with a permanent crossing structure; provide solutions / treatments that will improve the water quality of Muddy Brook; provide safe facilities for all users, including vehicles, pedestrians, and cyclists to cross Muddy Brook; and improve bicycle and pedestrian connectivity between Williston and South Burlington.


The existing 15’ diameter corrugated metal pipe culvert was originally constructed in 1986. Due to substantial corrosion the pipe failed in the spring of 2017 causing the closure of Kimball/Marshall Avenue at this crossing until a temporary bridge was installed in August 2017.

During the 2019 Halloween storm, the corrugated metal culvert washed out completely. Damage from the storm required that the temporary bridge be closed. Work was completed to temporarily stabilize the area and re-open the bridge, but a permanent stream crossing needs to be installed.

Damage visible from October 31, 2019 storm.


The project schedule is dependent on the funding available and associated project development procedures with potential grant programs. The design phase duration is also affected by the permitting and ROW process. The current schedule anticipates the completion of construction by October 2022.

Funding Sources

The Scoping Study received funding support from the Municipal Highway and Stormwater Grant administered by VTrans. The City is currently applying for additional funding to support the Design Phase of the project.

Grants received include:

TA Grant 2019- received $300,000/ requires a $75,000 match

Town Highway Structures Grant FY20- received $157,371/ requires a $15,737 match

Project Information

Scoping Study

Conceptual Plans

Invitation to Bid – Muddy Brook Culvert Replacement Project (723 kb)

Page last updated:2/04/2021