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.
Is closed from Lake Alpine to 2.4 mi west of 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 Tamarack (Calaveras Co) to Mt Reba (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
1-way controlled traffic 3.6 mi west of Sonoma /at Madrone Rd/ (Sonoma Co)
from 0800 hrs to 1500 hrs on 11/20/25 - Due to maintenance
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
1-way controlled traffic at various locations from 2.2 mi south of
the Jct of SR 26 to Avenue "B" /in Mokelumne Hill/ (Calaveras Co) from 0900 hrs
to 1500 hrs on 11/19/25 - Due to tree work
No traffic restrictions are reported for this area.
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.
No traffic restrictions are reported for this area.
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 Kingvale (Placer Co) to Donner Lake Interchange
(Nevada Co)
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
**For Westbound Traffic:
Chains are required on all vehicles except 4-wheel-drive vehicles with snow
tires on all 4 wheels from Donner Lake Interchange (Nevada Co) to 2.5 mi east of
the Jct of SR 20 (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 internet mapping, like
Google Maps & Mapquest
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.
Chains are required on all vehicles except 4-wheel-drive vehicles with snow
tires on all 4 wheels from 6.5 mi east of Peddler Hill to Silver Lake
(Amador co)
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 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
1-way controlled traffic at various locations from the Jct of SR 124 to
8.6 mi east of the Jct of SR 124 /in Ione/ (Amador Co) from 2100 hrs each night
to 0600 hrs each morning Tuesday thru Friday thru 11/21/25 - Due to construction
No traffic restrictions are reported for this area.
[IN THE NORTHERN CALIFORNIA AREA]No traffic restrictions are reported for this area.
Is closed from 26.4 mi east of Strawberry (Tuolumne Co) to 5.3 mi west of
the Jct of US 395 (Mono Co) /Sonora Pass/ - 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 Strawberry 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
Is closed from Yosemite National Park Boundary 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
For Yosenite Nat'l Park road information call 209-372-0200
Roads Info Last Updated: Thursday, 20th of November 2025, 08:59:22 AM
