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
1-way controlled traffic at various locations from 4.7 mi east of
Copperopolis to 7.8 mi east of Copperopolis (Calaveras Co) from 0700 hrs to
1700 hrs Monday thru Friday thru 6/13/25 - Due to construction
Highway 12
No traffic restrictions are reported for this area.
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 Argonaut Lane
/in Martell/ to Empire Street /in Plymouth/ (Amador Co) from 0800 hrs to
1530 hrs Monday thru Friday thru 6/13/25 - Due to construction
No traffic restrictions are reported for this area.
Highway 50
The westbound connector to eastbound I 80 /in West Sacramento/
(Sacramento Co) is closed from 2100 hrs each night to 0500 hrs morning 7 days a
week thru 7/17/25 - Due to construction - A detour is available
The westbound connector to southbound SR 99 /in Sacramento/ (Sacramento Co)
is closed from 2200 hrs on 6/13/25 to 0500 hrs on 6/16/25 - Due to construction
- A detour is available
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 the Jct of SR 124
to 8.8 mi east of the Jct of SR 124 /at Ione/Martell Cut off/ (Amador Co) from
2100 hrs each night to 0600 hrs each morning Monday thru Friday thru 6/13/25
- Due to construction
1-way controlled traffic at various locations from Dew Drop to 3.5 mi
east of Dew Drop /at Cooks Ridge Rd/ (Amador Co) from 0700 hrs to 1600 hrs
Monday thru Friday thru 6/13/25 - Due to maintenance
1-way controlled traffic at various locations from 1.3 mi east of
Peddler Hill /at Peddler Hill Rd/ to 9.7 mi east of Peddler Hill
/at Tragedy Springs Rd/ (Amador Co) from 0600 hrs to 1600 hrs Monday thru
Friday 6/13/25 - 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
1-way controlled traffic at various locations from 2.7 mi west to 2.2 mi
west of the Jct of US 395 (Mono Co) from 0700 hrs to 1530 hrs Monday thru Friday
thru 6/13/25 - Due to construction
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
