120th Local Drainage Improvements

News and Updates.....

On September 12, the City Council approved a construction agreement with Diamond Contracting Corp for the 120th Local Drainage Improvements.  The project will construct a storm sewer system with a detention pond to convey stormwater flows to existing infrastructure installed by the Colorado Department of Transportation (CDOT) as part of the State Highway 128 Extension project. Construction of the drainage pond is underway at the end of Colmans Way, south of W 120th Ave (Local).  Below is an anticipated street closure and work schedule. 


The Colmans Way closure from W. 120th Ave south to the end of the cul-de-sac is scheduled to continue until February 25. Beginning February 26, West 120th Avenue (Local) will be closed from Allison Street to Colmans Way. The closure is necessary to maintain public safety while water lines are relocated and storm drainage pipes, manholes, inlets, and curb and gutter are installed in Colman’s Way.  Detour routes will be posted. 
  • Road closure - W. 120th Ave from Allison Street to Colmans Way. 
  • W 119th Place, Allison Street, and Colmans Way (south of Randy's Auto) will remain open during the closure, and traffic will be detoured to these streets and to US 287. 
  • Contact information for questions - Diamond Contracting Corp (303-456-7666 or chriscole.dcc@gmail.com).
Anticipated Construction Schedule (weather depending):
1. January 2 - March 14: Drainage pond construction, water line relocation, and installation of storm pipes, manholes, and inlets in Colmans Way       and W 120th Ave (to 100 feet west of Colmans Way).
2. February - early March 2024: Concrete flatwork and pavement subgrade preparation.
3. Mid-March 2024: Asphalt paving and site restoration.


120th Local Street Closure Detour February 2024

The Colmans Way closure from W. 120th Ave south to the end of the cul-de-sac is scheduled to continue until February 25. Beginning February 26, West 120th Avenue (Local) will be closed from Allison Street to Colmans Way. The closure is necessary to maintain public safety while water lines are relocated and storm drainage pipes, manholes, inlets, and curb and gutter are installed in Colman’s Way.  Detour routes will be posted. 
  • Road closure - W. 120th Ave from Allison Street to Colmans Way. 
  • W 119th Place, Allison Street, and Colmans Way (south of Randy's Auto) will remain open during the closure, and traffic will be detoured to these streets and to US 287. 
  • Contact information for questions - Diamond Contracting Corp (303-456-7666 or chriscole.dcc@gmail.com).
Anticipated Construction Schedule (weather depending):
1. January 2 - March 14: Drainage pond construction, water line relocation, and installation of storm pipes, manholes, and inlets in Colmans Way and W 120th Ave (to 100 feet west of Colmans Way).
2. February - early March 2024: Concrete flatwork and pavement subgrade preparation.
3. Mid-March 2024: Asphalt paving and site restoration.