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
The eastbound connector to the eastbound & westbound I 80 /in Hercules/
(Contra Costa Co) is closed from 1900 hrs each night to 0500 hrs each morning
Tuesday thru Friday 11/15/24 - Due to construction - Motorists are advised to
use an alternate route
Is closed from 0.7 mi east of Lake Alpine to the Jct of SR 89
/Ebbetts Pass/ (Alpine Co) - Due to snow - Motorists are advised to use an
alternate route
Highway 12
1-way controlled traffic at various locations from 3.2 mi east
/at Pythian Rd/ to 5 mi east of Santa Rosa /at Greene St/ (Sonoma Co) from
2100 hrs each night to 0600 hrs each morning Tuesday thru Friday thru 11/15/24
- Due to construction
Highway 26
No traffic restrictions are reported for this area.
Highway 49
1-way controlled traffic at the Calaveras/Amador Co Line 24 hrs a day
7 days a week thru 2359 hrs on 1/31/25 - Due to construction
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
There is a dense fog advisory in effect from Richmond Pkwy /in Richmond/
to the Jct of SR 4 /in Hercules/ (Contra Costa Co) - Motorists are advised to
drive with caution
There is a dense fog advisory in effect at the Carquinez Bridge
/in Vallejo/ (Contra Costa,Solano Co) - Motorists are advised to drive
with caution
Eastbound traffic is reduced to 2 lanes at the Carquinez Bridge
(Contra Costa Co) from 0800 hrs to 1300 hrs on 11/13/24 - Due to maintenance
The westbound connector to eastbound US 50 /in West Sacramento/ (Yolo Co)
is closed from 2200 hrs each night to 0500 hrs each morning Tuesday thru Friday
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 26.4 mi east of Strawberry to 5.3 mi west of the
Jct of US 395 /Sonora Pass/ (Tuolumne,Mono Co) - Due to snow - Motorists are
advised to use an alternate route
Chains or snow tires are required from 13 mi east to 26.4 mi east of
Strawberry (Tuoloumne Co)
Please research chain control locations as caltrans is currently working to
update chain control descriptions for consistency with internet mapping,
like google maps & mapquest.
For Yosemite Nat'l Park road information call 209-372-0200
Highway 120
Is closed from Crane Flat to 3.5 mi west of the North Jct of US 395
/Tioga Pass/ (Tuolumne, Mono Co) - Due to snow - Motorists are advised to
use an alternate route
For Yosenite Nat'l Park road information call 209-372-0200