Construction Active

Caltrans : Roadwork on CA-1 Northbound and Southbound at CA-84 (San Gregorio). Lane closed. One way traffic control in effect. From 7:00 AM Wednesday, May 27, 2026 to 5:00 PM Wednesday, May 27, 2026.

A construction was reported on CA-1 S near San Mateo on May 27, 2026 at 2:01 PM.

Road

CA-1 S

Area

San Mateo

Address

Loading…

Started

May 27, 7:01 AM

Last Updated

6 minutes ago

May 27, 11:30 AM

Coordinates

37.3290, -122.3956

Update History

9 observations

Caltrans : Roadwork on CA-1 Northbound and Southbound at CA-84 (San Gregorio). Lane closed. One way traffic control in effect. From 7:00 AM Wednesday, May 27, 2026 to 5:00 PM Wednesday, May 27, 2026. May 27, 11:15 AM

Caltrans : Roadwork on CA-1 Southbound at CA-84 (San Gregorio). Lane closed. One way traffic control in effect. From 7:00 AM Wednesday, May 27, 2026 to 5:00 PM Wednesday, May 27, 2026. May 27, 11:00 AM

Caltrans : Roadwork on CA-1 Southbound at CA-84 (San Gregorio). Lane closed. One way traffic control in effect. From 7:00 AM Wednesday, May 27, 2026 to 5:00 PM Wednesday, May 27, 2026. May 27, 10:45 AM

Caltrans : Roadwork on CA-1 Southbound at CA-84 (San Gregorio). Lane closed. One way traffic control in effect. From 7:00 AM Wednesday, May 27, 2026 to 5:00 PM Wednesday, May 27, 2026. May 27, 10:30 AM

Caltrans : Roadwork on CA-1 Southbound at CA-84 (San Gregorio). Lane closed. One way traffic control in effect. From 7:00 AM Wednesday, May 27, 2026 to 5:00 PM Wednesday, May 27, 2026. May 27, 9:45 AM

Caltrans : Roadwork on CA-1 Southbound at CA-84 (San Gregorio). Lane closed. One way traffic control in effect. From 7:00 AM Wednesday, May 27, 2026 to 5:00 PM Wednesday, May 27, 2026. May 27, 9:15 AM

Caltrans : Roadwork on CA-1 Southbound at CA-84 (San Gregorio). Lane closed. One way traffic control in effect. From 7:00 AM Wednesday, May 27, 2026 to 5:00 PM Wednesday, May 27, 2026. May 27, 9:00 AM

Caltrans : Roadwork on CA-1 Southbound at CA-84 (San Gregorio). Lane closed. One way traffic control in effect. From 7:00 AM Wednesday, May 27, 2026 to 5:00 PM Wednesday, May 27, 2026. May 27, 8:45 AM

Caltrans : Roadwork on CA-1 Southbound at CA-84 (San Gregorio). Lane closed. One way traffic control in effect. From 7:00 AM Wednesday, May 27, 2026 to 5:00 PM Wednesday, May 27, 2026. May 27, 8:30 AM

Source: 511_sfbay · ID 511.org/1499906 First seen May 27, 2026 8:30 AM