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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

Highway 4

[IN THE CENTRAL CALIFORNIA AREA]

The westbound connector to northbound I 680 (Contra Costa Co) is closed
from 2300 hrs on 5/19/26 to 0500 hrs on 5/20/26 - Due to construction
- Motorists are advised to use an alternate route

Is closed from 8 mi east of Antioch /at Marsh Creek Rd/ to 11.9 mi east of
Antioch /at Byron Hwy/ (Contra Costa Co) from 1900 hrs each night to 0500 hrs
each morning Monday thru Friday thru 5/22/26 - Due to construction - Motorists i
are advised to use an alternate route

1-way controlled traffic at the Contra Costa/San Joaquin Co Line
/at Old River Bridge/ 24 hrs a day 7 days a week thru 1900 hrs on 7/26/26
- 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]

1-way controlled traffic at various locations from 0.2 mi north of the
Jct of SR 41 /at Junction Dr/ to 0.4 mi north of the Jct of SR 41
/at Meadow Vista Dr/ (Madera Co) 24 hrs a day 7 days a week - Due to
emergency work

[IN THE NORTHERN CALIFORNIA AREA]

1-way controlled traffic at various locations from Marysville Rd to
Willow Creek Campground /in Camptonville/ (Yuba Co) from 0800 hrs to 1730
Tuesday thru Friday thru 5/22/26 - Due to maintenance

1-way controlled traffic at various locations from El Dorado St to
Oak Dell Rd /in Diamond Springs/ (El Dorado Co) from 0800 hrs to 1600 hrs
Tuesday thru Friday thru 5/22/26 - Due to construction

1-way controlled traffic at various locations from 6.2 mi north of
the Jct of SR 20 /at Excelsior Ditch/ to 10.6 mi north of the Jct of SR 20
/at Birchville Rd/ (Nevada Co) from 0830 hrs to 1800 hrs Tuesday thru Friday
thru 5/22/26 - Due to construction

1-way controlled traffic at School St /in Sebastopol/ (Nevada Co) from
0700 hrs to 1730 hrs Tuesday thru Friday thru 5/22/26 - Due to construction

1-way controlled traffic at various locations from 2.5 mi north to 4.1 mi
north of Downieville (Sierra Co) From 0700 hrs to 1700 hrs Tuesday thru Friday
thru 5/22/26 - Due to construction

1-way controlled traffic at various locations from Loganville Camp Ground
to Ladies Canyon /in Loganville/ (Sierra Co) From 0630 hrs to 1700 hrs Tuesday
thru Friday thru 5/22/26 - Due to construction

Northbound traffic is reduced to 1 lane 4.7 mi north of I 80 /in Auburn/
(Placer Co) - Due to a downed power pole

Highway 50

[IN THE SACRAMENTO VALLEY & THE LAKE TAHOE BASIN]

No traffic restrictions are reported for this area.

[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]

A high wind advisory is in effect at the San Francisco-Oakland Bay Bridge
/in San Francisco/ (San Francisco,Alameda Co) - Travel is not recommended
for campers, trailers, or permit loads

[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

[BUSINESS 80 - CAPITAL CITY FREEWAY]

No traffic restrictions are reported for this area.

Highway 88

[IN THE CENTRAL CALIFORNIA AREA & SIERRA NEVADA]

No traffic restrictions are reported for this area.

Highway 99

[IN THE CENTRAL CALIFORNIA AREA]

The northbound connector to northbound & southbound SR 41 /in Fresno/
(Fresno Co) is closed from 2000 hrs on 5/19/26 to 0500 hrs on 5/20/26 - Due to
maintenance - Motorists are advised to use an alternate route

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]

No traffic restrictions are reported for this area.

[YOSEMITE NAT'L PARK]

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

Highway 120

[IN THE CENTRAL CALIFORNIA AREA & SIERRA NEVADA]

No traffic restrictions are reported for this area.

[YOSEMITE NAT'L PARK]

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

Roads Info Last Updated: Wednesday, 20th of May 2026, 12:59:10 PM

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