Construction Resolved

Caltrans : Roadwork on I-280 Southbound entering at Westborough Blvd (South San Francisco). On Ramp closed until 6 AM. From 8:00 PM Wednesday, July 29, 2026 to 6:00 AM Thursday, July 30, 2026.

A construction was reported on I-280 S near San Mateo on July 30, 2026 at 3:01 AM.

Road

I-280 S

Area

San Mateo

Address

Loading…

Started

Jul 29, 8:01 PM

Last Updated

1 day, 11 hours ago

Jul 29, 10:00 PM

Resolved

Jul 30, 4:00 AM

Coordinates

37.6444, -122.4506

Update History

6 observations

Caltrans : Roadwork on I-280 Southbound entering at Westborough Blvd (South San Francisco). On Ramp closed until 6 AM. From 8:00 PM Wednesday, July 29, 2026 to 6:00 AM Thursday, July 30, 2026. Jul 29, 10:00 PM

Caltrans : Roadwork on I-280 Southbound entering at Westborough Blvd (South San Francisco). On Ramp closed until 6 AM. From 8:00 PM Wednesday, July 29, 2026 to 6:00 AM Thursday, July 30, 2026. Jul 29, 9:45 PM

Caltrans : Roadwork on I-280 Southbound entering at Westborough Blvd (South San Francisco). On Ramp closed until 6 AM. From 8:00 PM Wednesday, July 29, 2026 to 6:00 AM Thursday, July 30, 2026. Jul 29, 9:30 PM

Caltrans : Roadwork on I-280 Southbound entering at Westborough Blvd (South San Francisco). On Ramp closed until 6 AM. From 8:00 PM Wednesday, July 29, 2026 to 6:00 AM Thursday, July 30, 2026. Jul 29, 9:15 PM

Caltrans : Roadwork on I-280 Southbound entering at Westborough Blvd (South San Francisco). On Ramp closed until 6 AM. From 8:00 PM Wednesday, July 29, 2026 to 6:00 AM Thursday, July 30, 2026. Jul 29, 9:00 PM

Caltrans : Roadwork on I-280 Southbound entering at Westborough Blvd (South San Francisco). On Ramp closed until 6 AM. From 8:00 PM Wednesday, July 29, 2026 to 6:00 AM Thursday, July 30, 2026. Jul 29, 8:45 PM

Source: 511_sfbay · ID 511.org/1528210 First seen Jul 29, 2026 8:45 PM