30th and Colorado Underpass
Give us your feedback!
The project team last presented project information at the 30th & Colorado Corridors Study open house on February 7, 2018.
We are still collecting feedback on the information and concepts pressented. Please take this quick two-minute questionnaire and tell us what you think.
Review the summary of comments received thus far from the public here .
Be sure to sign up for the project email list (at the bottom of this page) to receive updates, including future public engagement opportunities.
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 at Boulder (CU). The existing intersection and at-grade crossings support high frequency transit service, provides important commuting connections for vehicle travel, and connect the CU 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 4 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, 1 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 in the bicycle collision trend of 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 $8.0 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 for the project 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, September 25, 2017.
- 30th and Colorado Corridors Study Open House, February 7, 2018
- Review the information presented at this open house here.
Contact Melanie Sloan, Transportation Division, at 303-441-4934.
Or Comment on the 30th & Colorado Bike and Pedestrian Underpass Project--You don't need to register, and comments can be submitted through the "Make a Service Request for Transportation Projects" button.