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Designs for Diagonal Highway improvements unveiled next week

Road and bikeway upgrades planned
Image by icsilviu from Pixabay


Residents next week will get a chance to see preliminary plans to improve transit for the Diagonal Highway between Longmont and Boulder.

A virtual meeting hosted on Zoom is scheduled for Monday, June 27 between 5:30 p.m. - 7 p.m.

Boulder County, Colorado Department of Transportation and the Regional Transportation District are hosting the meeting to allow residents to see the Safety and Mobility and Commuter Bikeway Design projects for the Diagonal, officially known as Colo. 119, according to a news release.

Both projects will improve safety, traffic flow, and transit travel times, and expand multimodal connectivity, the news release states.

The project elements include:

  • Physically reconfiguring the Colo. 52 intersection
  • Access changes at Airport and Colo. 119
  • Bus priority improvements, including queue bypass lanes, Park-n-Rides, and stations to support future BRT services
  • Commuter bikeway
  • Signage,striping, and signal timing adjustments to key intersections.


Funding has been secured for the implementation of the Safety and Mobility Project, which is expected to be go to bid for construction in fall 2023, according to CDOT.