West Commercial St Storm Drain Project

Project updates:

December 15, 2020: Project work is now substantially completed. All of the storm drain infrastructure has been completed on time and within the project budget. The only work that remains in the spring of 2021 is final repairs to pavement trenches in W. Commercial Street.  

W. Commercial St SD 2020-11-02 IMG_3584
W. Commercial St SD 2020-11-02 IMG_3557
W. Commercial St SD 2020-11-05 IMG_3819
w.comm 12-15-2020 IMG_4279

Project Need:

Over the past year West Commercial Street between Cassidy Point Drive and the Casco Bay Bridge has been shut down at least 5 times due to street flooding. The street flooding is the result of a 100 year old vitrified clay pipe which has collapsed. This project will construct a new storm drain system in West Commercial Street and tie into an existing drainage outflow line approximately 500' to the west of the low point in the street with the intent of mitigating the flooding.

Project description:

In order to mitigate the flooding the contractor will install 720 feet of new storm drain pipe ranging from 10 inches to 30 inches in diameter. Along with the new pipe, the contractor will also install 4 new precast concrete catch basin inlet structures to help capture the water and convey it from the street to the new storm drain piping system. The new storm drain pipe system will connect to an existing Portland Water District Combined Sewer outflow line, which will convey the water to Portland Harbor. 

Project Details: 

Contractor: Gorham Sand and Gravel

Engineer: Gorrill Palmer Consulting Engineers

Owner: City of Portland Public Works Department 

Project Manager: Justin Pellerin, P.E. Water Resources/Stormwater Project Engineer

Project Contact Information: 207-874-8828, JRP@Portlandmaine.gov

Contract Value: $581,285.45

Projected Start Date: 10/12/2020

Project Substantial Completion Date: 12/1/2020

Project Final Completion Date: June 15, 2021



Related Documents