The Colorado Department of Transportation (CDOT) and its contractor, Kraemer North America, will close North 71st Street at the intersection with CO 119/Diagonal Highway for two days as part of ongoing safety and mobility improvements. The closure is scheduled for Monday, Dec. 15, and Tuesday, Dec. 16, from 7 a.m. to 5 p.m.
During this period, all modes of transportation will be prohibited on North 71st Street between Monarch Road (south of the business park) and CO 119/Diagonal Highway. However, access to the business park via 71st Street will remain available.
For drivers traveling southbound on 71st Street, CDOT advises using Monarch Road eastward to reach southbound CO 119 as an alternate route. Businesses can also access their properties by using Monarch Road north of the intersection at CO 119/Diagonal Highway.
The closure is necessary for crews to install new light poles in the area. CDOT asks travelers to use caution in the work zone and follow posted detour signs. The agency notes that schedules may change depending on conditions.
According to CDOT projections, traffic volumes on Diagonal Highway between Boulder and Longmont are expected to rise by about a quarter by the year 2040. This anticipated growth could lead to more congestion, delays, emissions from vehicles, and possibly more accidents.
The Safety, Mobility and Bikeway Project along CO 119 aims to improve safety throughout the corridor while enhancing travel options for all users. The project includes new signage and striping at pedestrian crossings at signalized intersections; adjustments in signal timing at key intersections such as Jay Road, 63rd Street, Colorado Highway 52, Niwot Road and Airport Road; a commuter bikeway with local connections; underpasses or overpasses at major intersections; reconfiguration of the CO 52 intersection for improved safety; accommodations for Bus Rapid Transit stations; changes at Airport Road intended to reduce crashes; and increased connectivity for bicyclists and pedestrians.
While construction continues along CO 119/Diagonal Highway, most configurations will remain unchanged aside from occasional lane shifts or closures. Notice will be provided before any major changes or detours occur during the project’s duration. Lane widths may be reduced and speed limits lowered in construction zones.
Kraemer North America serves as general contractor for this initiative. Additional information—including updates—can be found on CDOT’s project website: https://www.codot.gov/projects/co119-mobility
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