State Highway 119 Study

The metro area ranks among the nation’s most livable communities, but also one of the most congested. With the opening of the W and R light rail lines, and the University of Colorado A and B commuter rail lines, RTD’s next priority is to address the transportation needs and ease congestion in the northern communities with bus rapid transit along State Highway 119.

State Highway 119 Study

RTD in collaboration with northwest area elected officials, business leaders, and public agencies have initiated a comprehensive study to evaluate the viability of bus rapid transit along highway 119 between Boulder and Longmont. The study will help determine cost-effective mobility improvements to address the growing congestion and travel demand, environmental impacts, multimodal access, transit reliability and transit travel time among other criteria.


    SH119 BRT Study Map
  • RTD is evaluating the viability of implementing bus rapid transit (BRT) service along State Highway 119 between Boulder and Longmont
  • The study will address the growing congestion and travel demand, environmental impacts, multimodal access, transit reliability, and transit travel time
  • BRT service has been proven nationally to provide riders with a convenient, frequent, and reliable travel option as an attractive alternative to an automobile
  • The study advances one of the recommendations from the 2013 Northwest Area Mobility Study for a cost-effective enhanced transit investment along SH 119 until the Northwest Commuter Rail Line can be built
  • Participating in the study are Boulder County including the cities of Longmont and Boulder, Boulder and Longmont Chambers of Commerce, Niwot Business Association, Commuting Solutions, North Area Transportation Alliance, Colorado Department of Transportation, Denver Regional Council of Governments, Federal Transit Administration, BNSF, and the University of Colorado at Boulder

Project Study Process and Outcomes

SH119 BRT Study workflow
  • Analysis of alternative BRT improvement options
  • Locally preferred alternative with stakeholder and community support
  • Preliminary engineering (30 percent design plans)
  • Environmental clearance of the BRT improvements
  • Preliminary capital and operating and maintenance costs
  • Financial analysis/phased funding strategy for implementation


Project study started August 2017
Quarterly Policy Advisory and Technical Advisory Committee meetings
Quarterly public meetings begin November 2017
Project study estimated to conclude December 2018