Several roads leading to and from the San Francisco International Airport will be closed Monday night, with the first closure starting at 9 p.m., officials said.

According to an official announcement, the following stretches of U.S. Highway 101 will be shut down Monday night, although the highway itself will remain open:

9 p.m.—Northbound Highway 101 off-ramp to North Access Road
10 p.m.—Northbound Highway 101 on-ramp from westbound Millbrae Avenue
11 p.m.—Northbound Highway 101 off-ramp to SFO & southbound Highway 101 offramp to Produce Avenue/Airport Boulevard
11 p.m.—Two-lane closures at southbound Highway 101 mainline from Broadway to Oyster Point
Midnight—Northbound Highway 101 SFO connector off-ramp to San Bruno and northbound Highway 101 off-ramp to eastbound Interstate 380

SFO went on to say in the post that more road closures could happen tonight if needed.

Caltrans said in an email that drivers who are affected by the closures should use the Caltrans' QuickMap app for the latest information on current road closures but did not provide further information about recommended alternate routes or share a schedule of any further planned closures.

The closures are being done so Caltrans can repave several on-ramps and off-ramps as part of the U.S. 101 Express Lanes project in San Mateo County. It aims to reduce traffic congestion by creating 22 miles of express lanes in both directions on U.S. 101 from the San Mateo County-Santa Clara County line to I-380 in South San Francisco.

The majority of work will be completed by Thanksgiving, with intermittent closures through the end of the year, according to Caltrans.

San Francisco International Airport did not respond to a request for comment.