• How Did Boulder Do It?

    by  • February 14, 2011 • Bicycle Friendly Places, Engineering, Transportation Trails • 3 Comments

    Boulder, Colorado is one of just three “platinum” bicycle friendly communities in the United States (along with Davis and Portland). And it also has the 2nd or 3rd highest bicycle mode share in the country.

    How did Boulder do it? The answer, perhaps surprisingly, can be partly summed up in a single word: “underpasses”. Or, to get fancier, “Grade-Separated Crossing Treatments“. The Pedestrian and Bicycle Information Center describes the history:
    “In 1984, the city adopted the Boulder Creek Corridor Plan that recommended development of a continuous path along the entire length of Boulder Creek. This corridor would serve both as a flood hazard mitigation measure and as a continuous urban park for recreational and transportation use. It would also serve to restore and enhance wetlands along with fish and wildlife habitats.

    “The construction of a continuous shared-use facility required separated grade crossings at each intersection throughout the corridor. Existing creek underpasses were converted to include shared-use path underpasses through fairly simple modifications. Upon its completion, the Boulder Creek Path was instantly popular and quickly became a much loved community amenity.

    “The public acclaim of the Boulder Creek project led to an increase in public discussion about the desirability of extending and continuing the concept of the Boulder Creek project along Boulder Creek’s tributaries within the city. As a result, the city designated over 32.2 km (20 mi) of stream corridors along six tributaries of Boulder Creek for inclusion in the Greenways Program.

    “Today, the city of Boulder is home to more than 55 underpasses built to serve bicyclists and pedestrians. While most new underpass projects are driven by the transportation department, underpasses often have benefits beyond transportation. New underpasses along Boulder’s greenways have increased flood carrying capacity and improved the natural environmental systems along Boulder Creek and its tributaries.

    “Although most underpasses have been built as a part of Boulder’s greenway system, a number of underpasses have been constructed at locations not along a waterway. These underpasses serve to eliminate pedestrian barriers and increase safety at dangerous intersections. The College and Broadway underpass, for instance, was designed with the sole purpose of increasing pedestrian safety.”
    Here’s what all this direct investment in biking feels like. Be sure to check out the real estate agent (at 5:25) who shows properties by bike:


    • How Boulder Signs Its (Seamless) Bikeway Network


    James Wilson is the executive director of Bike Delaware. He is a member of the Association of Pedestrian and Bicycle Professionals (by whom he was named the 2014 Professional of the Year, Nonprofit Sector), the Institute of Transportation Engineers and the Delaware Bicycle Council. He serves on the board of directors of Delaware Greenways and as the co-chair of the policy committee of the Advisory Council on Walkability and Pedestrian Awareness. He holds engineering degrees from Yale University and the University of Texas at Austin and is the only registered lobbyist for cycling and walking in Delaware. He helped create, and continues to lead Bike Delaware's participation in, the Walkable Bikeable Delaware campaign. During his tenure as Bike Delaware's executive director, Delaware advanced in the national Bicycle Friendly State rankings for five years in a row, farther and faster than any other state, ever. Delaware is now officially ranked as the #3 Bicycle Friendly State in America.

    3 Responses to How Did Boulder Do It?

    1. Carol
      February 19, 2011 at 9:02 pm

      I just returned from Boulder. Even with streets covered in snow, bicyclists were still out riding. Once the snow was gone, bicyclists were everywhere. In addition, there is fabulous bus service, including a convenient, public affordable bus to/from the Denver airport. I'm sorry I didn't get to ride out there…maybe another time.

    2. MisterCrister
      February 23, 2011 at 2:46 pm

      We have 76 underpasses now with an average of 2 more built every year.

    3. rorowe
      February 28, 2011 at 12:49 pm

      This past fall, I moved to Boulder, and yeah, it's awesome. (btw, this is a great writeup of Boulder's Platinum status and "how they did it".)

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