Boulder County Transportation manages the construction projects for roads, bridges, pathways, drainage improvements and trails. The projects listed on this page are related to flood recovery and regularly scheduled roadway maintenance.
Construction-Related Travel Impacts
Use the Road Service Request Form to let us know about an issue on area roads.
Travel Impacts
County Road Projects
61st/63rd Street Tree Operations
- Expect lane closures & delays between Valmont and Jay roads
- 8 a.m. to 4:30 p.m.
- Oct. 21, 24, and 25
- Delays of up-to 10-minutes are possible. Alternate routes advised.
95th Street Delays and Lane Closures
- Lookout Road to Plateau Road
- Paving operations – Oct. 28 to Nov. 15,2019
- Delays could be 20 to 30 minutes at intersections
- Daytime, weekday lane reductions and shifts controlled by flagging personnel
- Alternate routes advised
- Bicycling discouraged during working hours
- See project website for more information
75th Street Pedestrian Access Improvement Project
- Work hours = 7:30 a.m. to 4:30 p.m. — Monday through Friday
- Expect lane closures and traffic shifts near the intersections of:
- 75th Street and S. Heatherwood Drive
- Ashfield Drive and S. Heatherwood Drive
Utica Street in Ward (top of Lefthand Canyon Drive) reduced to one-lane
- Paving work will take place on Saturday, Oct. 12 and Saturday, Oct. 19, which could result in longer delays (up-to 30-minutes)
- Retaining wall/roadway reconstruction project requires single-lane reduction, 8 a.m. to 4:30 p.m. weekdays
Lee Hill Drive Delays and Closures (NO BIKES)
- Work underway – daytime/weekday ROAD CLOSURES of Lee Hill Drive
- Bicycling restriction effective at all times
- See project website for map and more information
Fourmile Canyon Drive Flood Recovery Project
- Working Hours – 8 a.m. to 4:30 p.m. – Monday through Friday
- NON-RESIDENT CYCLING RESTRICTIONS – use link below
- Delays of up-to 15-minutes in:
- Lower Fourmile Canyon (just north of CO 119/Boulder Canyon Drive to Salina Junction)
Thank you for following restrictions! We apologize for any inconvenience.
For more information about Boulder County road travel impacts, please contact – Andrew Barth – 303-441-1032
Projects Impacting Cycling
Lee Hill Drive Repaving & Guardrail Replacement
24/7 CYCLING RESTRICTIONS THROUGH OCTOBER 2019
- No bikes 24/7 FOR YOUR SAFETY
- STRICTLY enforced by Boulder County Sheriff’s Office
- Thank you for your patience.
The single-lane construction zone is currently 1,200 feet long with a 2-foot-deep trench as displayed. Closures are to maintain safety for all roadway users. Violations may result in citations.
Fourmile Canyon Drive/Gold Run Road
DAYTIME-WEEKDAY CYCLING NON-RESIDENT RESTRICTIONS (updated May 16, 2019)
- No recreational/non-resident cycling in Fourmile Canyon
- 8 a.m. to 4:30 p.m. – Monday through Friday
- Cycling permitted on major holidays
- Independence Day – Thursday, July 4
- Labor Day – Monday, Sept. 2
- Residential cycling exception – Residents must contact Boulder County Transportation for pass
- Residents can contact Andrew Barth (info below) to obtain a residential cycling pass
- Restrictions in place due to increased volume of large truck traffic associated with three construction projects
Thank you for following restrictions! We apologize for any inconvenience.
Project Contact – Andrew Barth – 303-441-1032
Non-County Projects
- 63rd Street north of Jay Road – Xcel Energy gas main replacement
- Xcel replacing a gas main between Twin Lakes and Jay Road on 63rd Street
- Expect lane closures and travel delays
- 8 a.m. to 5 p.m. – Monday through Friday
- Oct. 14 to 31
- Apple Valley Road in Lyons – Pipeline Relocation/Replacement
- City of Longmont and Town of Lyons working on pipelines in the area
- Closures of one end of Apple Valley Road are required
- Detours will be posted for Apple Valley Road
- Contact information – email or 303-651-8416
- SH 119/Boulder Canyon Drive Reconstruction Project – CDOT April 2019 to February 2021
- Expect significant travel delays and roadway closures
- Project hotline = 720-500-9912
- Project email = CDOTCO119@gmail.com
- Text “CO119” to 21000 to receive project alerts
- Northern Water – Southern Water Supply Project
- Northern Water is constructing a new pipeline between Carter Lake in Larimer County and Boulder Reservoir in Boulder County
- The project will also require short travel delays on Boulder County Roads including (see map):
- N. 75th Street
- N. 73rd Street
- N. 63rd Street
- Hygiene Road
- Niwot Road
- Project Website
- Contact Information
- Special Event Permit Requests – Pending & Approved taking place throughout Boulder County
- Learn about road closures in the City of Boulder at www.BoulderConeZones.net.
- Learn about road closures in Longmont
- Learn about road closures in Lafayette
- Learn about road closures in Louisville
- Learn about road closures in Erie