CO 119 Safety, Mobility & Bikeway Improvements Project Update
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Traffic Update Oct. 6 - 12
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Construction Impacts
An overnight full closure of Jay Road at Colorado Highway 119 starts Tuesday, Oct. 8 at 9 p.m. lasting until 5 a.m. the following morning while crews shift traffic. This is a closure for all modes of transportation.
- All travelers should follow posted detour signs.
- Motorist Detour:
- Westbound Jay Road traffic will travel north on CO 119, exit onto 63rd Street and travel south on CO 119 to return to Jay Road.
- Eastbound Jay Road traffic will travel south on CO 119, keep right at the CO 157 intersection to shift to northbound CO 119 and to return to Jay Road.
- Bike Detour:
- Westbound cyclists will travel south on 57th Street, west on Independence Road, north on CO 119, west on the multi-use path at Fourmile Canyon Creek and head north on 47th Street to return to Jay Road.
- Eastbound cyclists will travel south on 47th Street, north on CO 119, east on Independence Road and head north on 57th Street to return to Jay Road.
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Monday, Oct. 7 to Wednesday, Oct. 9, 9 p.m. to 5 a.m., there will be overnight various northbound and southbound CO 119 single lane closures at Jay Road to set barrier and shift traffic.
Wednesday, Oct. 9 to Saturday, Oct. 12, 9 p.m. to 5 a.m., there will be overnight various northbound and southbound CO 119 single lane closures at Niwot Road to set barrier and shift traffic.
Thursday, Oct. 10, 9 p.m. to 5 a.m., there will be an overnight eastbound lane closure on Jay Road at CO 119 while crews set barrier.
An overnight full closure of Niwot Road at CO 119 is expected overnight starting at 9 p.m. Sunday, Oct. 13, to 5 a.m. Monday, Oct. 14. Detour information is coming soon.
Tuesday, Oct. 15, the southbound 55th Street movement in between northbound and southbound CO 119 in the median will close permanently. CO 119 travelers will continue south to Jay Road in order to travel back up north.
More information is available on the project website. If your usual travel route will be impacted by construction, remember to use Colorado’s public transportation services for or carpool for easier access to and from your final destination.
In addition, RTD closed the Niwot Park-n-Ride and permanently closed the north- and southbound CO 119 bus stops at CO 52 on Sept. 29. Please refer to the RTD press release for more closure details.
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IBM Drive Closure Construction Impacts
IBM Drive, from Colorado Highway 119 to IBM E. Loop Road, is closed, and will remain closed to all modes of transportation and travel until the end of 2025.
- For alternate access to the business park near IBM Drive, all travelers should follow posted detour signs. Continue traveling southwest on CO 119 and exit at 63rd Street, head north on 63rd Street, turn east to Monarch Road and into the business parking lot.
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About the Project
The CO 119 Safety, Mobility and Bikeway Project is constructing safety, mobility and bikeway improvements to make traveling through the corridor safer for all modes and transit travel faster and more reliable. The project is designed to integrate with other active multimodal projects on the corridor to ensure community members can safely and reliably travel throughout the corridor using their mode(s) of choice.
By the year 2040, the Diagonal Highway between Boulder and Longmont is expected to see a 25 percent increase in vehicular traffic. Increased traffic can result in more congestion, delay, tailpipe emissions and potentially more crashes.
Specific corridor improvements include:
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New signage, striping and improved signal timing at all pedestrian crossings at signalized intersections.
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Signal timing adjustments at key intersections (Jay Road, 63rd Street, Colorado Highway 52, Niwot Road and Airport Road).
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Physically reconfiguring the CO 52 intersection to improve safety and to accommodate new Bus Rapid Transit stations and Boulder County’s Commuter Bikeway between the northbound and southbound travel lanes.
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Changing access at Airport Road and CO 119 to reduce crashes and to improve safety and traffic flow.
Construction is expected to be complete by Spring 2027. Kraemer North America is the General Contractor for this project.
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Map of Colorado Highway 119 Safety, Mobility and Bikeway Improvements project corridor area.
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Project Schedule
- The project started Monday, Sept. 23, 2024
- Work is expected to be completed by Spring 2027
- Working hours are 7 a.m. to 5 p.m.
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Remember: Slow For The Cone
The following tips are to help you stay safe while traveling through maintenance and construction work zones.
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Do not speed in work zones. Obey the posted speed limits.
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Stay Alert! Expect the unexpected.
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Watch for workers. Drive with caution.
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Don't change lanes unnecessarily.
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Avoid using mobile devices such as phones while driving in work zones.
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Turn on headlights so that workers and other drivers can see you.
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Be especially alert at night while driving in work zones.
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Expect delays, especially during peak travel times.
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Allow ample space between you and the car in front of you.
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Anticipate lane shifts and merge when directed to do so.
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Be patient!
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