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Cone Zones: March 22, 2019

March 22, 2019 GMT


South Pratt Parkway: Traffic on Tuesday is to be shifted to the east half of the South Pratt Parkway Bridge, with one lane in each direction. Crews have finished construction of structural elements on the east half of the bridge. Remaining major tasks include installing the sidewalk on the west side of the bridge, followed by final asphalt paving and lane striping over the entire bridge. Tuesday’s traffic switch is expected to begin around 9 a.m. and take most of the day to set up. It will include removal of existing road striping and installation of temporary striping. Travel delays are anticipated on Tuesday, and drivers are encouraged to use an alternate route such as Main Street. All construction impacting traffic is expected to be completed by the end of April.



Arapahoe Avenue: Continuing work on landscaping, curbs and an underpass beneath Arapahoe Avenue will result in intermittent daytime closings and detours on Arapahoe between 17th Street and Broadway through the spring.

Boulder County

Fourmile Canyon Drive: Motorists can expect single-lane closings from 8 a.m. to 4:30 p.m. weekdays as construction crews work on a flood-recovery and drainage project on a segment of Fourmile Canyon Drive from about a mile north of Colo. 119 to Poorman Road. Recreational cycling will not be permitted on Fourmile during 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 Fourmile Canyon Drive’s intersection with Logan Mill Road, where a new bridge is being built.

North Boulder County Line Road/Larimer County Road 2: Motorists can expect daytime weekday closings at the Little Thompson River while culverts are replaced at the river crossing toward the western end of the road near North 83rd Street and Boulder County Road 23E.

Lefthand Canyon Drive: Reduced to one lane at Glendale Gulch for a culvert and roadway project to reduce the curve by realigning the road. A traffic signal will be in place until May or June.

North 55th Street: North 55th is closed at the Boulder/Whiterock Ditch just south of Pioneer Road for culvert replacement. The closure is expected to last until April or May.


South Boulder Road: Utility work to bury overhead electrical lines along South Boulder Road and 120th Street is anticipated to run through April. The construction area includes South Boulder Road east of Saratoga Drive to 120th Street, and 120th Street north and south of the South Boulder Road intersection. Construction will be weather-dependent and will occur from 7 a.m. to dusk weekdays. Work will include traffic lane width reductions, as well as periodic lane closures. Drivers should expect delays and are asked to drive with caution in the area.



Coal Creek Trail: Coal Creek Trail is closed between McCaslin Boulevard and the U.S. 36 Bikeway while improvements are made to the Coal Creek corridor. A signed detour is available to guide bicyclists and pedestrians through downtown Superior.

Marshall Road: Temporary lane shifts will be in place as needed on Marshall Road between Center Drive and 76th Avenue for westbound traffic for street light maintenance. Through traffic will not be 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.