Clover Basin Drive: Traffic on Clover Basin Drive will not be permitted to cross Airport Road during asphalt rehabilitation work at the intersection that continues through Tuesday. Access from Clover Basin Drive onto Airport Road or from Airport Road onto Clover Basin Drive will be limited each day and will vary from day to day. North/south Airport Road will have a single lane of traffic open in each direction.


Mapleton Avenue: The city will begin reconstructing the intersection of Mapleton Avenue and Sixth Street beginning Monday, and Mapleton will be closed between Fifth and Seventh streets, with a detour to Maxwell Place or Pine Street. The work is expected to take two weeks to complete.

North Broadway: There will be periodic lane realignments and bike lane closures through Aug. 2 to complete utility relocation work. Bicyclists will have to merge with vehicular traffic.

Asphalt rejuvenation: Boulder is conducting asphalt rejuvenation work from late July through August in several neighborhoods throughout the city, beginning with various streets in the University Hill and Chautauqua neighborhoods the week of July 29. There will be no parking during the work with local access only. Cyclists are advised to seek alternate routes or use sidewalks where possible.

Railroad quiet zones: Construction of quiet zone roadway improvements at 47th Street has begun and will last for approximately another week. Construction of improvements at 63rd Street north of Arapahoe Avenue is to begin this week and last for a week to a week and a half. Traffic impacts for both projects include a single lane closure with traffic control during off-peak hours. Cyclists are asked to merge with vehicular traffic.

Boulder County

Chip sealing: Boulder County has scheduled chip sealing work on several county roads, including: Monday and Tuesday, Overland Road between Balarat and Bar K roads, and Tuesday, County Road 130.

Fourmile Canyon Drive: Motorists can expect delays on Fourmile Canyon Drive and Gold Run Road from 8 a.m. to 4:30 p.m. Monday through Friday for flood recovery work in Fourmile Canyon. Recreational cycling will not be permitted on Fourmile weekdays, although residents of the area who have county-issued passes can cycle for commuting and errands. Motorists can expect delays of up to 15 minutes at Lower Fourmile Canyon just north of Colo. 119 to Salina Junction, Gold Run and Upper Fourmile between Wall Street and Sunset.

Lefthand Canyon Drive: Reduced to one lane at Glendale Gulch for culvert and roadway projects from 8 a.m to 4:30 p.m. weekdays.

Colo. 119: Road will be closed between 10 a.m. and 2 p.m. Monday through Thursday in Boulder Canyon from mile post 39 to mile post 40 between Boulder and Nederland for rock blasting related to a flood-recovery project. Motorists entering the canyon from Nederland will be stopped at 9:45 a.m. Asphalt paving continues between mile posts 26 and 34 and culvert installation will impact the highway between mile posts 30 and 31. Up to 40-minute delays are expected through Boulder Canyon 7 a.m. to 7 p.m. Monday through Friday.

95th Street: Reconstruction of 95th Street between Lookout and Plateau roads will require daytime weekday lane reductions and shifts.

Lee Hill Drive: Single lane closings and traffic delays of up to 15 minutes can be expected with work underway on resurfacing and guardrail replacement, with the project expected to last into October.


2019 street reconstruction project: Demolition, asphalt paving and reconstruction, milling, patching and pavement marking on various Louisville streets will start Monday, weather permitting.


Marshall Road: Temporary lane shifts are in place between Center Drive and 76th Avenue for westbound traffic for construction of a hard surface multi-use path along the south side of U.S. 36 between the eastbound McCaslin BRT Station and the Davidson Mesa underpass. Through traffic is not affected during this time. Bicyclists are encouraged to use alternative routes such as Coal Creek Drive to 76th Avenue in order to bypass the construction zone.

Coalton Road: Construction between Indiana Street and Rock Creek Parkway is  tentatively scheduled to begin Monday. A new traffic pattern will be put in place with the south lanes closed and all traffic routed onto the lanes north of the median with just one lane in each direction. No access to the west end of Rock Creek Circle will be allowed at Coalton Road.  To access Starbucks use the east end of Rock Creek Circle.  This switchover will continue for several weeks.


Montgomery Drive: Starting Monday and continuing through Aug. 6, Montgomery Drive will be closed as part of the Erie Parkway Bridge Project. Local traffic will be diverted south on Montgomery Drive to the roundabout at Lehigh Circle and Bonanza Drive. At the roundabout all vehicles wanting to reach Erie Parkway will take Bonanza Drive east, then continue north on Bonanza Drive to the signalized intersection at Erie Parkway.


Utica Street: At top of Lefthand Canyon Drive, Utica will be reduced to one lane from 8 a.m. to 4:30 p.m. weekdays for a retaining wall reconstruction project.

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