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July 6, 2018

Media Contact

Andrew Barth, 303-441-1032

Lee Hill Drive weekday closures start July 9 for culvert project

Closures in place 24-7 from Monday morning through Thursday evening for two months

Boulder County, Colo. - Boulder County Transportation will begin a reconstruction project to replace a large culvert on Lee Hill Drive starting Monday, July 9. The project will require weekday closures of Lee Hill Drive from Monday, July 9 through Thursday, Aug. 16, weather permitting. Construction will continue through September, but the full-roadway closure will not be necessary the entire time.

Closure of Lee Hill Drive at Six Mile Creek This Summer
Phase I of this project will involve replacement of a failing culvert at Six Mile Creek, which is located near 3250 Lee Hill Drive, approximately halfway between Olde Stage Road and Deer Trail Drive. Lee Hill Drive will be closed to all traffic at Six Mile Creek, 24-hours a day in both directions, from 7 a.m. on Mondays through 6 p.m. on Thursdays, until we can maintain a safe travel lane. From 6 p.m. on Thursdays through 7 a.m. on Mondays, a traffic signal will be used as Lee Hill Drive will be reduced to a single lane of travel.

Emergency responders have been notified of the work and and contingency plans have been put in place to ensure they can get through the work zone at all times to assist with emergencies.

Residents living west of the closure location, which includes the Boulder Heights subdivision, will be detoured to Lefthand Canyon Drive. Residents living east of the closure area can use Lee Hill Drive to access their property. The closure will be in effect for all travelers (motor vehicles and cyclists).

Construction will continue later this year, as a county contractor will be installing concrete curb and gutter approximately 1,500 feet up Lee Hill Drive from Olde Stage Road. Lane closures are anticipated during this work with single lane of traffic controlled by a traffic signal on nights and weekends.

The entire stretch of Lee Hill Drive from Olde Stage Road to Deer Trail Road, along with the entirety of Deer Trail will be repaved in 2019 and all guardrail will be replaced. More details will be provided prior to construction.

For more information on this project, visit or contact Boulder County Transportation at 303-441-3900. All current Boulder County Transportation road project information is available at

Closure map