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
1-way controlled traffic at various locations from 2.1 mi west of the
Stanislaus/Calaveras Co Line /at Dunton Rd/ to the Stanislaus/Calaveras Co Line
- Due to construction
Highway 12
1-way controlled traffic at various locations from Lower Ranch Pwky
/in Sebastapol/ to Braids Bridge /in Santa Rosa (Solano Co) from 2000 hrs
each night to 0500 hrs each morning Tuesday thru Saturday thru 7/12/25 - Due to
construction
Highway 26
1-way controlled traffic at various locations from 3.3 mi east to 5.6 mi
east of the Jct of SR 49 /at Rich Gulch Ln/ (Calaveras Co) 24 hrs a day 7
days a week thru 12/31/25 - Due to construction
Highway 49
1-way controlled traffic at various locations from 1 mi south of
San Andres to Angels Rd /in San Andres/ (Calaveras Co) from 0700 hrs to 1600 hrs
Monday thru Friday thru 7/11/25 - Due to maintenance
No traffic restrictions are reported for this area.
Highway 50
Westbound traffic is reduced to 1 lane from Watt Ave to the Jct of SR 99
/in Sacramento/ (Sacramento Co) from 2130 hrs on 7/10/25 to 0600 hrs on
7/11/25 - Due to construction
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 reduced the risk of brake fires
No traffic restrictions are reported for this area.
Highway 88
1-way controlled traffic at various locations from Ham's Station to 2.4 mi
east of Ham's Station (Amador Co) from 0700 hrs to 1600 hrs Monday thru Friday
thru 7/11/25 - Due to construction
Highway 99
A high wind advisory is in effect from the Jct of I 5 to 2 mi south of
Bakersfield (Kern Co) - Travel is not recommended for campers, trailers, or
permit loads
The northbound connector to westbound US 50 /in Sacramento/ (Sacramento Co)
is closed from 2300 hrs each night to 0400 hrs each morning Tuesday thru
Saturday thru 8/15/25 - Due to construction - Motorists are advised to use an
alternate route
Highway 108
No traffic restrictions are reported for this area.
[YOSEMITE NAT'L PARK]For Yosemite Nat'l Park road information call 209-372-0200
Highway 120
No traffic restrictions are reported for this area.
[YOSEMITE NAT'L PARK]For Yosenite Nat'l Park road information call 209-372-0200
