30th and Colorado Underpass
The 30th & Colorado Bike and Pedestrian Underpass project will provide important safety, accessibility, mobility and drainage improvements to the intersection of 30th Street and Colorado Avenue. The project area is an important piece of the 30th & Colorado travel corridor for the Boulder community and the University of Colorado Boulder (CU). The existing intersection and at-grade crossings support high frequency transit service, provide important commuting connections for vehicle travel and connect the CU Boulder main and east campuses.
Today, the Average Daily Traffic through the project intersection ranges from 9,000 to almost 10,000 vehicles on Colorado Avenue and just over 21,000 vehicles on 30th Street. Each day, about 1,450 pedestrians and bicyclists (combined) pass through the 30th & Colorado intersection and more than 1,250 riders board and exit RTD and CU buses using the four stops at this intersection.
The Safe Streets Report (2016) found the 30th & Colorado intersection to be the top collision location within the city's street network, with 86 collisions occurring between 2012-2016, one involving a pedestrian and 18 involving a bicyclist. Additionally, the existing on-street bicycle facilities contribute to a high level of stress for some users, leading some bicyclists to ride on the sidewalks to navigate to and through this intersection. Bikes on sidewalks and in crosswalks moving against vehicle travel were indicated as a bicycle collision trend in the Safe Streets Report.
Looking to the future, the Boulder Valley Comprehensive Plan and the University of Colorado East Campus Master Plan forecast growth in the project area, which is expected to result in more people traveling through this intersection. The 30th & Colorado Underpass project will eliminate a barrier for university and community travel needs in this changing landscape.
The 30th & Colorado Bike and Pedestrian Underpass Project will construct a grade-separated crossing of both 30th Street and Colorado Avenue. The underpass will provide connections to the existing sidewalks, multi-use path and bicycle lanes; reconstruct the intersection with concrete; reconstruct and enhance the existing transit stops; install underpass lighting, landscaping and other urban designs; and install public art.
This $8 million project is funded by a $6 million federal Transportation Improvements Program (TIP) grant, $900,000 in state transportation funds and $1.1 million in City of Boulder transportation funds. The TIP is distributed every four years by the Denver Regional Council of Governments (DRCOG), in cooperation with the Colorado Department of Transportation (CDOT) and the Regional Transportation District (RTD).
Project planning and design began in 2017 and will continue to spring 2018. Final design will be completed in winter 2018 followed by construction in spring 2019. Construction is currently anticipated to take about one year to complete.
Feedback received through the public process will be incorporated into the project design, where feasible.
Previous Public Engagement
- 30th & Colorado Corridors Study Open House, Sept. 25, 2017.
- 30th & Colorado Corridors Study Open House, Feb. 7, 2018
- University of Colorado, Boulder Main and East Campus Outreach, review the information presented at this event here ; Read a summary of the comments received here
- Sustainability Summit, CU Boulder, April 25, 2018
- University of Colorado Engineering Council finals week tabling event, CU Boulder East Campus, May 1, 2018
- 30th & Colorado Corridors Study Open House, May 3, 2018
- National Federation of the Blind, Boulder Chapter, May 12, 2018
- Community Cycles Advocacy Committee, May 14, 2018
- Center for People with Disabilities, May 21, 2018
- BeHeard Boulder, May 3, 2018 to June 1, 2018
- Transportation Advisory Board, July 9, 2018
- Review the information presented here
- University of Colorado Design Review Board, July 12, 2018
- Review the information presented here
Contact Melanie Sloan, Transportation Division, at 303-441-4934.
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