Posted: 9:02 p.m. Friday, June 27, 2014

Stretch of 280 to close over holiday weekend

KTVU.com

SAN FRANCISCO —

A stretch of northbound Interstate Highway 280 in San Francisco is set to close during the Fourth of July holiday weekend, according to Caltrans officials.

The highway closure between the U.S. Highway 101/I-280 interchange and downtown San Francisco will begin 9 p.m. on Wednesday and is expected to reopen at 5 a.m. on July 7.

The closure will give crews time to replace a bridge hinge on northbound I-280 between Cesar Chavez and 24th streets.

The on-ramps affected by the closure include Alemany Boulevard, the Highway 101 connector to northbound I-280, Indiana Street and 18th Street.

Off-ramps that will be blocked include Mariposa Street, Sixth Street, and King Street.

Southbound I-280 will remain open during the closure and motorists are advised to use Highway 101 as a detour or take public transportation to avoid expected heavy traffic on alternate routes.

A stretch of southbound I-280 had been closed over the Memorial Day weekend holiday for similar work for the hinge replacement project.

An additional closure is planned for the Labor Day holiday weekend.

The three closures will allow crews to work on three bridge hinges, which connect two parts of a bridge to expand and contract during strong movements, such as in an earthquake, according to Caltrans.

During the upcoming closure, crews will be demolishing concrete around the old bridge hinges, taking out the old pieces and installing a new hinge. 

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