Starting TONIGHT-FINAL 55-Hour Lane Closures on U.S. 101 for Barrier Upgrades San Mateo/Santa Clara County Line and Whipple Ave. Fri., Dec. 20, at 10 PM to Mon., Dec. 23, at 5 AM the #1 Express Lanes in both directions will be closed along a 2.5-mile section to upgrade barriers. https://t.co/aHfYfPv1da