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
Is closed from 0.7 mi east of Lake Alpine to 7.2 mi west of the Jct of SR 89
(Alpine Co) - For the winter - 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 Arnold (Calaveras Co) 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 internet mapping, like
Google Maps & Mapquest
Highway 12
No traffic restrictions are reported for this area.
[IN THE NORTHERN CALIFORNIA AREA]No traffic restrictions are reported for this area.
Highway 26
1-way controlled traffic 2.7 mi west of Sandy Gulch
/at the South Fork of the Mokelumne River/ (Calaveras Co) 24 hrs a day 7 days a
week thru 0700 hrs on 6/30/24 - Due to bridge work
1-way controlled traffic at the North Fork of the Mokelumne River
/in West Point/ (Calaveras Co) 24 hrs a day 7 days a week thru 0700 hrs on
6/30/24 - Due to bridge work
Highway 49
Chains or snow tires are required from Bassets to Sattley (Sierra 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
1-way controlled traffic at the Calaveras/Amador Co Line 24 hrs a day
7 days a week thru 2359 hrs on 10/4/24 - Due to bridge work
No traffic restrictions are reported for this area.
Highway 50
Eastbound traffic is being held at Meyers at (El Dorado Co) - Due toi
spin-outs
Chains are required on all vehicles except 4-wheel-drive vehicles with snow
tires on all 4 wheels from Twin Bridges to Meyers (El Dorado 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
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]**For Eastbound Traffic:
Chains are required on all vehicles except 4-wheel-drive vehicles with snow
tires on all 4 wheels from 3.4 mi east of Gold Run (Placer Co) to
the Nevada State Line
Eastbound trucks are being screened at Applegate (Placer 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 internet mapping, like
Google Maps & Mapquest
**For Westbound Traffic:
Is closed to westbound traffic from the Nevada State Line to Colfax
(Placer Co) - Due to multiple spin-outs - Motorists are advised to use an
alternate route - Local residents with proper identification will be allowed
access
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
All westbound trucks are required to stop at the Brake Check Area 0.5 mi
west of Nyack (Placer Co) - To reduce the risk of brake fires
No traffic restrictions are reported for this area.
Highway 88
Is closed from 3.5 mi east of Silver Lake to Kirkwood /Carson Spur/
(Amador Co) - Due to avalanche control - 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 Dew Drop to 3.5 mi east of Silver Lake (Amador Co)
Chains are required on all vehicles except 4-wheel-drive vehicles with snow
tires on all 4 wheels from Kirkwood (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 internet mapping, like
Google Maps & Mapquest
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 (Tuolumne Co) to 7.7 mi west of
the Jct US 395 (Mono Co) /Sonora Pass/ - For the winter - 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 6 mi east of Sonora to 26.4 mi east of Strawberry
(Sonora Pass)
Please research chain control locations as Caltrans is currently working to
update chain control descriptions for consistency with internet mapping, like
Google Maps & Mapquest
[YOSEMITE NAT'L PARK]
For Yosemite Nat'l Park road information call 209-372-0200
Highway 120
Is closed from Crane Flat to 4.5 mi west of the Jct of US 395
/Tioga Pass/ (Mono Co) - For the winter - 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 8.5 mi east of Groveland to Yosemite Nat'l Park
(Tuolumne 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
[YOSEMITE NAT'L PARK]
For Yosenite Nat'l Park road information call 209-372-0200
