30th Street Multimodal Safety Improvements Boulder, Colorado

A corridor study led to the complete streets design along a key arterial with high crash trends, adding greater safety and connectivity to the communities around Boulder, Colorado. The improvements to 30th Street focused on enhancing bicycle infrastructure as well as access to mass transit and low-impact design stormwater facilities. After completing the Colorado Corridors Study, Otak also led the design to improve this corridor that represents a critical route for both University of Colorado boulder and broader community.

A Corridor Study and Design for Safe, Complete Connectivity

A combination of raised and separated bike lanes, along with widened sidewalks provided the basis for multimodal improvements along 30th Street. The design replaced previous on-street bike lanes that were five feet wide or less and addressed intersections that were found to be among the top collision locations in the city by the corridor study. These new bicycle facilities created seamless connection to the Boulder Creek Multi-Use Path, enhanced transit stops, as well as the 30th and Colorado Underpass. Also included as part of the complete streets design approach were improved driveway and ditch crossings, utility upgrades, low-impact stormwater facilities, and low-maintenance landscaping with a modified irrigation pipe system. The design effort resulted in the delivery of final construction documents in accordance with the City of Boulder and CDOT standards, along with obligations related to CDOT Federal and State-funded Local Agency project requirements. Significant public outreach and coordination with the University of Colorado was part of the original corridor study that ultimately provided guidance across these multimodal enhancements.