Overview
CDOT, in partnership with the City and County of Broomfield, proposes to extend120th Avenue from Wadsworth Parkway, across US 36 to approximately 120th Avenue and Teller Street, including an intersection with US 287.
The purpose of the 120th Avenue Connection project is to accommodate existing and forecasted east-west through-traffic, reduce out-of-direction travel, and alleviate traffic congestion.
An Environmental Assessment for this project was completed in March 2005, and a Finding of No Significant Impact (FONSI) was approved by the Federal Highway Administration in January 2006.
Improvements will be completed in three phases:
Phase I (Design-Build) will construct portions of 120th Avenue (0.7 mile), a bridge carrying 120th Avenue over US 36, and a bridge carrying 120th Avenue over Commerce Street.
Phase II (Design-Bid-Build) will construct improvements to 120th Avenue east of US 36, and will require significant right-of-way acquisition and relocation. The project schedule has not been finalized.
Phase III will construct the local road system off of and around the 120th Avenue improvements constructed in Phase I. A portion of Phase III work is proposed to be included in Phase I work to maximize the "best value" of the design-build contract. The schedule for this phase will be announced in the future.
In October 2007, CDOT Chief Engineer Pamela Hutton authorized proceeding with Phase I using the design-build project-delivery method. The design-build selection procedure will be in two phases, consisting of a Request for Qualifications (RFQ) followed by a Request for Proposal (RFP). The design-build team will be selected and awarded based on a "best value" approach.
Displays from Public Meeting
- Original EA Design (3MB pdf)
- Phases 1 and 3 Construction Diagram (2.5MB pdf)
- Construction Phases Diagram (3MB pdf)
- 120th Avenue Connection at Emerald Street Visualization (4.75MB pdf)
Request for Letters of Interest
As stated in the Request for Letters of Interest document, an optional informational meeting will be held Thursday, April 24th at 1:30 p.m. at CDOT Region 6 North Engineering Office, 4670 Holly Street, Unit D, Denver. It is anticipated that the Request for Qualifications will be released May 8, 2008.
Material from the April 24th Informational Meeting


