Starting Sunday, all westbound traffic on Arapahoe Avenue between 15th and Folsom streets — and the Jump bus in both directions — will have to take a detour on Canyon Boulevard.

The detour is necessary for the next stage of roadwork on Arapahoe Avenue, as the city replaces deteriorating asphalt with a concrete surface, replaces underground utilities and makes other improvements, Boulder officials said.

Arapahoe Avenue is one of seven major transportation projects the city is doing this summer with more than $18 million in capital improvement bonds.

Boulder voters approved a $49 million capital bond program in 2011, including $27 million in transportation projects.

This summer's work represents the bulk of the transportation spending from that bond program, which has to be completed by March 2015 to comply with legal requirements.

Arapahoe Avenue

From Sunday through Aug. 15, only one lane of Arapahoe will be open to eastbound traffic. The city's goal is reopen the road before students return. There will be some additional work after Aug. 15, but the effect on traffic should be much less, officials said.

Travelers are encouraged to walk or bike along the Boulder Creek Path or take the bus. There will be sidewalk detours in place, and a sidewalk on one side of the street will always remain open. There will be access to businesses at all times, and the Boulder Farmers' Market will remain at its current location on 13th Street.


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28th Street

Multimodal improvements on 28th Street will start mid-June and continue through the fall. The project includes new sections of multi-use path along the west side of 28th Street between Arapahoe Avenue and Valmont Road and a shared bus/bike/right-turn lane and new multi-use path along the east side of 28th St. between Pearl Street and Valmont Road.

Robert Patterson, left, and Lupe Garcia work to locate utility lines for future road construction near the intersection of Arapahoe Avenue and Folsom
Robert Patterson, left, and Lupe Garcia work to locate utility lines for future road construction near the intersection of Arapahoe Avenue and Folsom Street. (Jeremy Papasso / Daily Camera)

There will be intermittent lane closures in both directions of 28th Street, with occasional full-time lane closures to complete the work, though business access will be maintained at all times. There will be pedestrian and bicycle detours and temporary bus stop closures or relocations.

Pearl Parkway

Work on the Pearl Parkway Multiway Boulevard and multi-use path will continue through late 2014.

This Boulder Junction project involves construction of a new multiway boulevard on the north side of Pearl Parkway between 30th Street and the BNSF railroad and a new multi-use path along the north side of Pearl Parkway between the BNSF railroad and Foothills Parkway. Pearl Parkway will be reduced to one lane of traffic in each direction from west of 30th to east of Foothills at all times through December.

The multiway boulevard along the south side of Pearl Parkway was finished in May.

Road resurfacing

More than 85 street sections throughout the city are scheduled for chip seal, resurfacing or reconstruction.

Most of these road projects will involve daytime traffic impacts, intermittent lane or road closures and parking restrictions. Some of these projects were delayed due to last year's flooding. Those delayed or incomplete projects will be completed during this repair cycle, including the final resurfacing of Table Mesa Drive east of Broadway.

The 0.15 percent sales tax for road maintenance passed by Boulder voters in 2013 will allow that level of road resurfacing and reconstruction to continue every year, as the city tries to maintain the condition of its road surfaces.

South Boulder Road

South Boulder Road and Manhattan Drive intersection improvements are intended to enhance safety and access for students at Manhattan School of Arts and Academics, as well as other people who travel through the area by bike, foot or bus.

Starting in mid-June and continuing through the fall, there will be some daytime lane closures in both directions of South Boulder Road and Manhattan. Access to businesses will remain open at all times.

The improvements are funded by a combination of federal Safe Routes to School grant and city bond funds.

West Pearl

West Pearl streetscape improvements, which have drawn the concern and ire of business owners, continue through September.

The city is installing pedestrian, irrigation and streetscape improvements between Seventh and 11th streets, including the Ninth and 10th street intersections.

There will be sidewalk closures and parking restrictions for one to two months along each one-block section as work proceeds from east to west. There will be access to all businesses at all times, and the sidewalk on one side of Pearl Street will always remain open.

63rd Street

Multimodal improvements on 63rd Street will continue through the end of the year. This project includes replacement of the 63rd Street bridge over Leggett Ditch, continuous bike lanes in both directions and a new sidewalk along the west side of 63rd.

Sixty-third Street will be closed at Leggett Ditch, north of Arapahoe, through late June. There will be access to businesses, facilities and parks at all times, but through traffic will be detoured onto 55th Street. After the closure is lifted in late June, another closure will be necessary later in 2014 to complete the bridge replacement.

Boulder Transit Center

Phase II of the Boulder Transit Center area improvements will run from June to August. The city will be completing access and accommodation improvements for bicyclists going to the Boulder Transit Center, at 14th Street between Canyon and Walnut Street.

The project includes a new bike locker, additional bike parking and more lighting. There will be some bicycle and pedestrian detours. The project will take four to six weeks to complete.

For more detailed information about these projects and road and path closures, go to boulderconezones.net.