The following county roadway projects result in travel impacts to both motorists and cyclists. All dates and times listed are weather dependent.
- Lee Hill Drive Resurfacing and Guardrail Replacement
- Work underway
- Project anticipated to last into October 2019
- Resurfacing of Lee Hill between Olde Stage Road and Deer Trail Road
- Guardrail replacement along the corridor
- Expect single lane closures (some in place 24/7) and travel delays up to 15-minutes
- A traffic signal will be set up when lane closures are required over night
- Signal location will be near the intersection with Olde Stage Road
- A traffic signal will be set up when lane closures are required over night
- Bicycling restricted between Olde Stage and Deer Trail – daytime/weekdays – Starting Monday, June 24 (more info below)
- 95th Street (Lookout to Plateau) Reconstruction
- Daytime, weekday lane reductions and shifts – Expect longer delays (15 to 20 minutes) controlled by flagging personnel
- Alternate routes advised
- Bicycling discouraged during working hours
- Utica Street in Ward (top of Lefthand Canyon Drive) reduced to one-lane
- Retaining wall/roadway reconstruction project requires single-lane reduction, 8 a.m. to 4:30 p.m. weekdays
- Fourmile Canyon Flood Recovery Work – Expect delays on Fourmile Canyon Drive and Gold Run Road
- Normal Hours – 8 a.m. to 4:30 p.m. – Monday through Friday
- Delays of up-to 15-minutes in/at:
- Lower Fourmile Canyon (just north of CO 119/Boulder Canyon Drive to Salina Junction)
- Gold Run
- Upper Fourmile between Wall Street and Sunset – Gravel roadway resurfacing
- NON-RESIDENT CYCLING RESTRICTIONS IN FOURMILE CANYON DURING WORKING HOURS – SEE BELOW
Cycling – Projects impacting cycling
- Lee Hill Drive Repaving – DAYTIME-WEEKDAY CYCLING RESTRICTIONS START MONDAY, JUNE 24, 2019
- No bikes – 7 a.m. to 5 p.m. – Monday through Friday
- July 4 and 5 excepted
- 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
- SEE MAP
- Restrictions in place due to increased volume of large truck traffic associated with three construction projects
- Thank you for following restrictions
- No recreational/non-resident cycling in Fourmile Canyon
View the Cycling Closure Map .
Other Non-County Construction and Events resulting in travel restrictions
- Apple Valley Road in Lyons – North St. Vrain Pipeline Relocation/Replacement
- City of Longmont and Town of Lyons working on pipelines in the area
- Will result in closures of Apple Valley Road and Antelope Drive
- Detours will be posted for Apple Valley Road
- Access to Hall Valley Ranch will be impacted. Use access of South St. Vrain Road/SH 7
- SH 119/Boulder Canyon Drive Reconstruction Project – CDOT April 2019 to February 2021
- Expect significant travel delays and roadway closures
- 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
- 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