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 Alpine Lake to 7.4 mi west of the Jct of SR 89
/Ebbetts Pass/ (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 Cottage Springs (Calaveras Co) to 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.
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
No traffic restrictions are reported for this area.
[IN THE NORTHERN CALIFORNIA AREA]1-way controlled traffic at various locations from Lockie Rd
/in Diamond Springs/ to 1.1 mi north of Placerville /at Barry Ln/
(El Dorado Co) from 0800 hrs to 1530 hrs Monday thru Friday thru 4/28/25 - Due
to mainatenance
Highway 50
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
[CAPITAL CITY FREEWAY]
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 Cisco Grove (Placer Co) to Truckee (Nevada 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
**For Westbound Traffic:
Chains are required on all vehicles except 4-wheel-drive vehicles with snow
tires on all 4 wheels from Truckee (Nevada Co) to 2.5 mi east of the Jct of
SR 20 (Nevada 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 88
Chains are required on all vehicles except 4-wheel-drive vehicles with snow
tires on all 4 wheels from Ham's Station (Amador Co) to 5 mi west of Picketts
Jct (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]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
Is closed from 26.4 mi east of Strawberry to 5.3 mi west of the
Jct of US 395 /Sonora Pass/ (Tuolumne,Mono Co) - For the winter - Motorists
are advised to use an alternate route
Chains or snow tires are required from 3.8 mi west of the Jct of US 395 to
the Jct of US 395 (Mono Co)
Chains are required on all vehicles except 4-wheel-drive vehicles with snow
tires on all 4 wheels from Long Barn 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 internet mapping, like
Google Maps & Mapquest
For Yosemite Nat'l Park road information call 209-372-0200
Highway 120
Is closed from Crane Flat to 3.5 mi west of the North Jct of US 395
/Tioga Pass/ (Tuolumne, Mono Co) - For the winter - Motorists are advised
to use an alternate route
For Yosenite Nat'l Park road information call 209-372-0200
