120th Avenue Connection Final Phase

120th Ave Excavation & Earthwork Oct 2105

W. 120th Ave. in Broomfield Closed for Railroad Construction

Representatives of the BNSF Railway have provided an update regarding ongoing work adjacent to the track crossing W. 120th Avenue. Removal of the railroad siding is proceeding well, avoiding the need for heavy construction work overnight. Residents may see a machine that is compressing material under the tracks during the night. It has headlights and makes noise. Planned closures of W. 120th Avenue will still take place between November 16 and 25. This work is weather dependent and the schedule is subject to change based on inclement conditions. Click here to view the closure map.


October (2015) project activities on the 120th Avenue Connection included the continuation of utilities relocation (gas/electric/communications), continuation of excavation and earthwork (primarily west of the railroad near Colmans Way) and the completion of the project's scoped portion of the railroad shoo-fly to the existing railroad siding track area.

In September 2010, the two entities completed the first two phases of the 120th Avenue Connection project. The initial phases of the project constructed a new six-lane portion of State Highway 128 and a bridge over US 36 that connects with Wadsworth Boulevard. The final phase of the project will complete the construction of the new roadway that will connect SH 128 and 120th Avenue. It will also construct a grade separation at the Burlington Northern Santa Fe Railroad.  Jalisco International was the contractor selected for this project, with construction to be completed in 2018.

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Contact Information

Project Information: 303 562-1811

Emily Wilfong
CDOT Communications Manager
303 512-5955

Jacob Ojera
CDOT Region 1 North Resident Engineer
303 398-6732


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