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 westbound connector to eastbound I 80 /in Hercules/ (Contra Costa Co)
is closed from 2130 hrs on 8/19/25 to 0500 hrs on 8/20/25 - Due to maintenance
- Motorists are advised to use an alternate route
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 North Front St
/in Rio Vista/ (Contra Costa Co) to the Jct of SR 160 (Sacramento Co) from
1900 hrs each night to 0600 hrs each morning Monday thru friday thru 8/22/25
- 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 Bush St to Main St
/in Plymouth/ (Amador Co) from 1800 hrs each night to 0400 hrs each morning
Monday thru Thursday thru 8/21/25 - Due to construction
1-way controlled traffic at various locations from the
El Dorado/Placer Co Line to the Placer to 0.1 mi north of the
El Dorado/Placer Co Line /at Foresthill Rd/ from 2100 hrs on 8/18/25 to 0600 hrs
on 8/19/25 - Due to permit work
Highway 50
The westbound connector to eastbound I 80 /in Sacramento/ (Sacramento Co)
is closed from 2100 hrs each night to 0500 hrs each morning Sunday thru Friday
thru 8/22/25 - Due to construction - Motorists are advised to use an alternate
route
The westbound connector to westbound I 80 /in Sacramento/ (Sacramento Co)
is closed from 2000 hrs on 8/18/25 to 0500 hrs on 8/19/25 - Due to construction
- Motorists are advised to use an alternate route
The southbound connector to eastbound US 50 /in Sacramento/ (Sacramento Co)
is closed from 2300 hrs each night to 0500 hrs each morning Sunday thru Friday
thru 8/22/25 - Due to construction - Motorists are advised to use an alternate
route
Highway 59
Is closed to southbound traffic from West Olive Ave to Cooper St
/in Merced/ (Merced Co) from 2100 hrs each night to 0500 hrs each morning
Monday thru Friday thru 8/22/25 - Due to permit work - Motorists are advised to
use an alternate route
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
The southbound connector to eastbound US 50 /in Sacramento/ (Sacramento Co)
is closed from 2300 hrs each night to 0500 hrs each morning Sunday thru Friday
thru 8/22/25 - Due to construction - Motorists are advised to use an alternate
route
Highway 88
No traffic restrictions are reported for this area.
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 eastbound US 50 /in Sacramento/ (Sacramento Co)
is closed from 2300 hrs each night to 0400 hrs each morning Sunday thru Friday
thru 8/22/25 - 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
Is reopened at 26 mile rd /in Adela/ (Stanislaus Co) ar 0301 hrs on 8/20/25
1-way controlled traffic from Plaza Ave to Mchenry Ave /in Escalon/
(San Joaquin Co) from 2100 hrs each night to 0600 hrs each morning Monday thru
Friday thru 8/22/25 - Due to construction
For Yosenite Nat'l Park road information call 209-372-0200
