A 4-mile stretch of northbound Interstate 680 between Sunol and Pleasanton will be closed on three weekends for repaving work, starting Friday.

Weather permitting, the closures between Koopman Road and Sunol Boulevard will begin at 10 p.m. Friday and continue through 5 a.m. Monday so crews can work to remove and replace the entire roadway sections of the freeway, according to a Caltrans representative.

On Presidents Day weekend, the road will be closed longer, from 10 p.m. Friday to 5 a.m. the following Tuesday in the northbound direction between Sunol Boulevard and Bernal Avenue.

The roadwork is part of a project that encompasses northbound Interstate 680 between Sunol and San Ramon to improve safety and provide a smoother ride for motorists, according to Caltrans.Caltrans originally had scheduled to do the I-680 paving work on three holiday weekends starting with the Martin Luther King Jr. holiday, but rain canceled those plans.

In the case of rain or unanticipated developments, the closures will be rescheduled.

Southbound I-680 meanwhile will remain open and will not be affected by the closures.

For more information, go to dot.ca.gov.