Mountain Road Report
This map shows real-time local traffic conditions; green means the traffic flow is normal, orange means it is slower than normal, and red and dark red indicates slow and stopped vehicles. Updating Caltrans reports for each highway are below the map click or tap on the highway signs to jump to the road you are interested in.
Highway 4
Is closed from 0.7 mi east of Lake Alpine to 7.2 mi west of the Jct of SR 89
(Alpine Co) - For the winter - Motorists are advised to use an alternate route
Highway 12
1-way controlled traffic from North Front St /in Rio Vista/ (Solano Co) to
the Jct of SR 160 (SACRAMENTO CO) /the Rio Vista Bridge/ 24 hrs a day 7 days a
week thru 0900 hrs on 4/27/24 - Due to bridge work
No traffic restrictions are reported for this area.
Highway 26
1-way controlled traffic 2.7 mi west of Sandy Gulch
/at the South Fork of the Mokelumne River/ (Calaveras Co) 24 hrs a day 7 days a
week thru 0700 hrs on 6/30/24 - Due to bridge work
1-way controlled traffic at the North Fork of the Mokelumne River
/in West Point/ (Calaveras Co) 24 hrs a day 7 days a week thru 0700 hrs on
6/30/24 - Due to bridge work
Highway 49
1-way controlled traffic at the Calaveras/Amador Co Line 24 hrs a day
7 days a week thru 2359 hrs on 10/4/24 - Due to bridge work
No traffic restrictions are reported for this area.
Highway 50
No traffic restrictions are reported for this area.
[CAPITAL CITY FREEWAY]No traffic restrictions are reported for this area.
Highway 59
No traffic restrictions are reported for this area.
Highway 80
No traffic restrictions are reported for this area.
[IN THE NORTHERN CALIFORNIA AREA & SIERRA NEVADA]All westbound trucks are required to stop at the Brake Check Area 0.5 mi
west of Nyack (Placer Co) - To reduce the risk of brake fires
No traffic restrictions are reported for this area.
Highway 88
No traffic restrictions are reported for this area.
Highway 99
No traffic restrictions are reported for this area.
[IN THE NORTHERN CALIFORNIA AREA]No traffic restrictions are reported for this area.
Highway 108
Is closed from 13 mi east of Strawberry (Tuolumne Co) to 7.7 mi west of
the Jct US 395 (Mono Co) /Sonora Pass/ - For the winter - Motorists are
advised to use an alternate route
For Yosemite Nat'l Park road information call 209-372-0200
Highway 120
Is closed from Crane Flat to 4.5 mi west of the Jct of US 395
/Tioga Pass/ (Mono Co) - For the winter - Motorists are advised to use
an alternate route
For Yosenite Nat'l Park road information call 209-372-0200