I-580 Altamont Pass Between North Flynn and Grant Line Closure


Overnight Full Highway Closure

Overhead Sign Structure Installation

Wednesday, July 24, 2019

1:00 AM – 5:00 AM

Altamont - Caltrans will temporarily close eastbound Interstate 580 (I-580) overnight from the North Flynn Road off-ramp to the Grant Line Road on-ramp near the Altamont Pass in Alameda County to install a new overhead sign structure for the I-580 Repaving Project.

The closure schedule is as follows:

  • Wednesday, July 24 - 1:00 AM to 5:00 AM            

Detours will be in place.

Please drive cautiously through the construction zone, leaving a safe traveling distance between your vehicle and the vehicle ahead of you. 

Please #BeWorkZoneAlert.

For real-time traffic, click-on Caltrans QuickMap at: http://quickmap.dot.ca.gov/

Or follow us on Twitter at: https://twitter.com/caltransd4

Marcus Wagner

Caltrans Public Information Officer

District 4 (East Alameda)