SR-20 CalTrans Chain Control Highway SR-20 in California

 
Length: 211.882mi.
Counties: Mendocino, Lake, Colusa, Sutter, Yuba, Nevada, Placer
NOTE: Please research chain control locations as CalTrans is currently working to update chain control descriptions for consistency with Internet mapping, like Google maps & Mapquest.

CalTrans Chain Control Signs (18)

NOT INTENDED for emergency use. For emergencies visit CalTrans Chain Controls.
SR-20
West
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Upper Lake in Lake County at 1374ft elevation in District 1

.8 Miles east of MEN-LAK Co Line at milepost: 44.75
No chain controls are in effect at this time.
20
West
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Upper Lake in Lake County at 1338ft elevation in District 1

0.2 Miles west of Junction LAK-29 at milepost: 52.09
No chain controls are in effect at this time.
20
West
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Clearlake in Lake County at 1640ft elevation in District 1

.1 Miles east of Junction LAK 53 at milepost: 75.68
No chain controls are in effect at this time.
20
West
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Clearlake Oaks in Lake County at 1131ft elevation in District 1

2.8 Miles east of Junction LAK 53 at milepost: 78.42
No chain controls are in effect at this time.
20
West
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Clearlake Oaks in Lake County at 1026ft elevation in District 1

3.77 Miles east of Junction LAK 53 at milepost: 79.35
No chain controls are in effect at this time.
20
West
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Clearlake Oaks in Lake County at 1587ft elevation in District 1

4.4 Miles west of LAK-COL Co Line at milepost: 85.07
No chain controls are in effect at this time.
20
West
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Rumsey in Lake County at 1732ft elevation in District 1

.6 Miles west of LAK-COL Co Line at milepost: 89.83
No chain controls are in effect at this time.
20
West
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Williams in Lake County at 1883ft elevation in District 1

At the LAK-COL Co Line at milepost: 90.42
No chain controls are in effect at this time.
20
West
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Willits in Mendocino County at 1660ft elevation in District 1

4 Miles west of Willits at milepost: 28.88
No chain controls are in effect at this time.
20
West
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Williams in Colusa County at 1053ft elevation in District 3

Bear Creek Bridge - 3 Miles e/o lake/col co line at milepost: 93.63
No chain controls are in effect at this time.
20
West
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Williams in Colusa County at 790ft elevation in District 3

Knob Tree Turnout (End of 4 Lane) - 12 Miles w/o Williams at milepost: 98.30
No chain controls are in effect at this time.
20
West
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Emigrant Gap in Nevada County at 5492ft elevation in District 3

20/80 Junction at milepost: 211.50
No chain controls are in effect at this time.
20
West
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Grass Valley in Nevada County at 2385ft elevation in District 3

Auburn St. On-Ramp at milepost: 180.28
No chain controls are in effect at this time.
20
West
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Grass Valley in Nevada County at 2545ft elevation in District 3

Dorsey Dr. OC at milepost: 181.67
No chain controls are in effect at this time.
20
West
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Grass Valley in Nevada County at 2634ft elevation in District 3

Brunswick Rd. On-Ramp (WB), End of at milepost: 182.52
No chain controls are in effect at this time.
20
West
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Nevada City in Nevada County at 2693ft elevation in District 3

Gold Flat On-Ramp (WB) at milepost: 183.52
No chain controls are in effect at this time.
20
West
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Nevada City in Nevada County at 2545ft elevation in District 3

Sacramento St. On-Ramp, End of at milepost: 184.37
No chain controls are in effect at this time.
20
West
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Nevada City in Nevada County at 2532ft elevation in District 3

Coyote St. On-Ramp, End of at milepost: 185.02
No chain controls are in effect at this time.