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Mountain Road Report

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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.

California Highway 4
California Highway 12
California Highway 26
California Highway 49
Highway 50
Tuolumne County J59
Interstate 80
California Highway 88
California Highway 99
California Highway 108
California Highway 120

Yosemite

Heading to Yosemite? Wondering how long the wait is at a specific entrance station?

Real-time wait information for the Big Oak Flat Entrance (Highway 120 from the west), the South Entrance (Highway 41) and Arch Rock Entrance (Highway 140) are on nps.gov under Current Wait Times.

Highway 4

[IN THE CENTRAL CALIFORNIA AREA]

Is closed from 0.5 mi east of the Jct of SR 207 /Mt Reba Turnoff/ to the
Jct of SR 89 /Ebbetts Pass/ (Alpine Co) - Due to snow- Motorists are advised
to use an alternate route

Chains are required on all vehicles except 4-wheel-drive vehicles with snow
tires on all 4 wheels from 2 mi west of the Mt Reba Turnoff to the
Mt Reba Turnoff (Alpine Co)

Please research chain control locations as Caltrans is currently working to
update chain control descriptions for consistency with quickmap.dot.ca.gov

1-way controlled traffic at various locations from the
Contra Costa/San Joaquin Co Line to 8.2 mi east of the
Contra Costa/San Joaquin Co Line /at Trapper Rd/ from 2000 hrs each night to
0400 hrs each morning Thursday thru Sunday thru 11/15/26 - Due to construction

Highway 12

[IN THE CENTRAL CALIFORNIA AREA]

No traffic restrictions are reported for this area.

Highway 26

[IN THE CENTRAL CALIFORNIA & SIERRA NEVADA]

No traffic restrictions are reported for this area.

Highway 49

[IN THE CENTRAL CALIFORNIA AREA]

No traffic restrictions are reported for this area.

[IN THE NORTHERN CALIFORNIA AREA]

Chains are required on all vehicles except 4-wheel-drive vehicles with snow
tires on all 4 wheels from Sierra City to Yuba Pass Summit (Sierra Co)

Chains or snow tires are required from Yuba Pass Summit to the Jct of SR 89
(Sierra Co)

Please research chain control locations as Caltrans is currently working to
update chain control descriptions for consistency with quickmap.dot.ca.gov

Highway 50

[IN THE SACRAMENTO VALLEY & THE LAKE TAHOE BASIN]

Chains are required on all vehicles except 4-wheel-drive vehicles with snow
tires on all 4 wheels from 3 mi east of Kyburz to Meyers (El Dorado Co)

Please research chain control locations as Caltrans is currently working to
update chain control descriptions for consistency with quickmap.dot.ca.gov

1-way controlled traffic at various locations from 2.1 mi east of Riverton
to 2.5 mi west of Kyburz /at 30 Milestone Tract/ (El Dorado Co) from 1900 hrs
each night to 0600 hrs each morning Sunday thru Saturday thru 11/14/26 - Due to
construction

[CAPITAL CITY FREEWAY]

No traffic restrictions are reported for this area.

Highway 59

[IN THE CENTRAL CALIFORNIA AREA]

No traffic restrictions are reported for this area.

Highway 80

[IN THE SAN FRANCISCO BAY AREA - SOLANO CO]

Eastbound traffic is reduced to 3 lanes from 4th St to Sterling St
/in San Francisco/ (San Francisco Co) from 1900 hrs to 2300 hrs on 11/13/26
- Due to maintenance

Eastbound traffic is reduced to 1 lane at Richmond Pkwy /in Richmond/
(Contra Costa Co) - Due to a traffic collision

[IN THE NORTHERN CALIFORNIA AREA & SIERRA NEVADA]

**For Eastbound Traffic:
Is closed to eastbound traffic at Colfax (Placer Co) Due to snow
- Motorists are advised to use an alternate route

**For Westbound Traffic:
Is reopened to westbound traffic at the Nevada State Line at 1942 hrs on
11/13/26

Chains are required on all vehicles except 4-wheel-drive vehicles with snow
tires on all 4 wheels from the Nevada State Line to Nyack (Placer Co)

Westbound trucks are being screened 5 mi west of Reno /at Mogul/ (Washoe Co)
- Drivers must have maximum chains in their possession in order to proceed
- Permit loads are prohibited

Please research chain control locations as Caltrans is currently working to
update chain control descriptions for consistency with quickmap.dot.ca.gov

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

[BUSINESS 80 - CAPITAL CITY FREEWAY]

No traffic restrictions are reported for this area.

Highway 88

[IN THE CENTRAL CALIFORNIA AREA & SIERRA NEVADA]

Chains are required on all vehicles except 4-wheel-drive vehicles with snow
tires on all 4 wheels from 4 mi east of Ham's Station (Amador Co) to 1 mi west
of Woodfords (Alpine Co)

Please research chain control locations as Caltrans is currently working to
update chain control descriptions for consistency with quickmap.dot.ca.gov

Highway 99

[IN THE CENTRAL CALIFORNIA AREA]

There is a dense fog advisory in effect from Fresno/Merced Co Line to
the Merced/Stanislaus Co Line - Motorists are advised to drive with caution

A high wind advisory is in effect from the Stanislaus/San Joaquin Co Line
to the San Joaquin/Sacramento Co Line - Travel is not recommended for campers,
trailers, or permit loads

[IN THE NORTHERN CALIFORNIA AREA]

No traffic restrictions are reported for this area.

Highway 108

[IN THE CENTRAL CALIFORNIA AREA & SIERRA NEVADA]

Is closed from 26.4 mi east of Strawberry to 5.6 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 are required on all vehicles except 4-wheel-drive vehicles with snow
tires on all 4 wheels from 8.7 mi east to 26.4 mi east of Strawberry
(Tuolumne Co)

Please research chain control locations as Caltrans is currently working to
update chain control descriptions for consistency with quickmap.dot.ca.gov

[YOSEMITE NAT'L PARK]

For Yosemite Nat'l Park road information call 209-372-0200

Highway 120

[IN THE CENTRAL CALIFORNIA AREA & SIERRA NEVADA]

Is closed from Crane Flat to 3.5 mi west of the Jct of US 395 /Tioga Pass/
(Tuolumne, Mono Co) - Due to snow - Motorists are advised to use an alternate
route

Is closed 5.1 mi east of the Jct of US 395 to 7.5 mi west of west of
the Jct of US 6 (Mono Co) - Due to snow - Motorists are advised to use an
alternate route

Chains or snow tires are required from Sand Flat Cut Off Rd to Benton
Crossing Rd (Mono CO)

Please research chain control locations as Caltrans is currently working to
update chain control descriptions for consistency with quickmap.dot.ca.gov

[YOSEMITE NAT'L PARK]

For Yosenite Nat'l Park road information call 209-372-0200

Roads Info Last Updated: Friday, 13th of November 2026, 09:59:18 PM

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