Mendocino County, CA

357 public highway bridges

Mendocino County Bridge Snapshot

Mendocino County, California contains 357 public highway bridges in the FHWA National Bridge Inventory. Roughly 32.2% are rated “Good,” 51.8% “Fair,” 7.3% “Poor,” and 7.3% are classified as structurally deficient — the federal designation for spans whose deck, superstructure, or substructure has been rated 4 or below on the 0–9 NBI scale. Structurally deficient does not mean unsafe to cross; it means the bridge is on the priority list for repair or replacement.

Inspections in CA are conducted by certified engineers from the state Department of Transportation on a 24-month cycle, and results are reported back to the FHWA each spring. The list below shows every NBI-tracked bridge in the county, sorted by inventory load rating. Use the “Sort by” controls to surface the lowest-rated spans first, and click any row for full inspection history, traffic counts, and condition trends.

Source: FHWA National Bridge Inventory. See methodology for full definitions.

357
Total Bridges
32.2%
Good
7.3%
Poor
7.3%
Structurally Deficient

Condition Distribution

Good
32.2% (115)
Fair
51.8% (185)
Poor
7.3% (26)
SD
7.3% (26)

All Bridges (357)

STATE ROUTE 1

Fair

Over: HILLSIDE

01-MEN-001-83.54, Mendocino, CA

Built 1985 Load: 32.4 t ADT: 1,185

U.S. HIGHWAY 101

Fair

Over: RUSSIAN,NCRA/NWP,GEYSERS

01-MEN-101-R0.48, Mendocino, CA

Built 1989 Load: 32.4 t ADT: 13,300

STATE ROUTE 162

Fair

Over: LONG VALLEY CREEK

01-MEN-162-R0.03, Mendocino, CA

Built 1995 Load: 32.4 t ADT: 860

STATE ROUTE 1

Fair

Over: DUNN CREEK

01-MEN-001-92.83, Mendocino, CA

Built 2014 Load: 32.4 t ADT: 810

MOUNTAIN HOUSE RD

Fair

Over: FELIZ CREEK

0.1 MI SW SR101 HOPLAND, Mendocino, CA

Built 1991 Load: 32.4 t ADT: 1,272

EEL RIVER RD

Fair

Over: EEL RIVER

5 MI N MAIN IN POTTR VLY, Mendocino, CA

Built 1989 Load: 32.4 t ADT: 279

N STATE ST

Fair

Over: HENSLEY CREEK

0.2 MI S LAKE MNDOCINO DR, Mendocino, CA

Built 1973 Load: 32.4 t ADT: 15,190

EAST RD

Fair

Over: WEST BRANCH RUSSIAN RIV

E OF JCT W RD & TOMKI RD, Mendocino, CA

Built 1990 Load: 32.4 t ADT: 846

MENDOCINO PASS RD

Fair

Over: WILLIAMS CREEK

8.0 MI E/O COVELO, Mendocino, CA

Built 1983 Load: 32.4 t ADT: 226

BRANSCOMB RD

Fair

Over: CAHTO CREEK

22.32 MI E FROM SH 1, Mendocino, CA

Built 1991 Load: 32.4 t ADT: 478

E SIDE POTTER VLY

Fair

Over: EAST FORK RUSSIAN RIVER

0.3 MI N RTE 20, Mendocino, CA

Built 1999 Load: 32.4 t ADT: 3,699

VICHY SPRINGS RD

Fair

Over: RUSSIAN RIVER

0.8 MI E/O RTE 101, Mendocino, CA

Built 1986 Load: 32.4 t ADT: 5,718

WILDERNESS LDGE RD

Fair

Over: SOUTH FORK EEL RIVER

1.8 MI N BRANSCOMB RD, Mendocino, CA

Built 1992 Load: 32.4 t ADT: 114

IRR EAST LANE

Fair

Over: MILL CREEK

1.0 MI E OF SR 162, Mendocino, CA

Built 1989 Load: 32.4 t ADT: 889

HIBBARD ROAD

Fair

Over: RANCHERIA CREEK

ADJACENT TO SR 128, Mendocino, CA

Built 1987 Load: 32.4 t ADT: 126

TOMKI RD

Fair

Over: TOMKI CREEK

0.2 MI N JCT CR 308, Mendocino, CA

Built 1988 Load: 32.4 t ADT: 130

HEARST-WILLITS RD

Fair

Over: STRING CREEK

4.3 MI NW REYNOLDS HWY, Mendocino, CA

Built 1956 Load: 32.4 t ADT: 208

ROBINSON CREEK RD

Fair

Over: ROBINSON CREEK

3.00 MI N SH 253, Mendocino, CA

Built 1956 Load: 32.4 t ADT: 168

ROBINSON CREEK RD

Fair

Over: ROBINSON CREEK

3.15 MI N SH 253, Mendocino, CA

Built 1975 Load: 32.4 t ADT: 168

ORR SPRINGS RD

Fair

Over: SOUTH FORK BIG RIVER

13.4 MI W US 101, Mendocino, CA

Built 1973 Load: 32.4 t ADT: 134

DOBIE RD

Fair

Over: TURNER CREEK

0.10 MI S CR 327-A, Mendocino, CA

Built 1979 Load: 32.4 t ADT: 210

AIRPORT RD

Fair

Over: TOWN CREEK

0.3 MI S HOWARD ST, Mendocino, CA

Built 1994 Load: 32.4 t ADT: 142

POPPY DR

Fair

Over: WILLITS CREEK

1.4 MI N PRIMROSE DR, Mendocino, CA

Built 1977 Load: 32.4 t ADT: 545

MILL CREEK DR

Fair

Over: MILL CREEK

AT W. COMMERCIAL ST, Mendocino, CA

Built 1980 Load: 32.4 t ADT: 1,000

PINE AVENUE

Fair

Over: BURRIGHT CREEK

1 MI E E SIDE POTTER VLY, Mendocino, CA

Built 1999 Load: 32.4 t ADT: 165

RAILROAD AVENUE

Fair

Over: BAECHTEL CREEK

0.1 MI EAST OF RT 101, Mendocino, CA

Built 2011 Load: 32.4 t ADT: 300

ROBINSON CREEK RD

Fair

Over: ROBINSON CREEK

3.00 MILES WEST OF SR 253, Mendocino, CA

Built 2004 Load: 32.4 t ADT: 40

FOREST ROAD 200

Fair

Over: WEST CHAMBERLAIN CREEK

1.4 MI N JCT SR 20, Mendocino, CA

Built 1957 Load: 32.4 t ADT: 75

FOREST ROAD 800

Fair

Over: NORTH FORK BIG RIVER

0.1 MILE SOUTH OF SR 20, Mendocino, CA

Built 1958 Load: 32.4 t ADT: 50

FOREST ROAD 100

Fair

Over: JAMES CREEK

0.4 MI N JCT SR 20, Mendocino, CA

Built 1980 Load: 32.4 t ADT: 25

FOREST ROAD 360

Fair

Over: SOUTH FORK NOYO RIVER

AT JCT WITH RD 350, Mendocino, CA

Built 1987 Load: 32.4 t ADT: 50

FOREST ROAD 900

Fair

Over: JAMES CREEK

S OF SR 20, N OF RD 910, Mendocino, CA

Built 1981 Load: 32.4 t ADT: 25

FOREST ROAD 900

Fair

Over: NORTH FORK BIG RIVER

0.16 MI S JCT SR 20, Mendocino, CA

Built 1982 Load: 32.4 t ADT: 25

FOREST ROAD 640

Fair

Over: NORTH FORK CASPAR CREEK

EAST OF JCT RD 600, Mendocino, CA

Built 1994 Load: 32.4 t ADT: 50

U.S. HIGHWAY 101

Fair

Over: NCRRA/NWP RR

01-MEN-101-42.09, Mendocino, CA

Built 1957 Load: 33.4 t ADT: 19,000

U.S. HIGHWAY 101

Fair

Over: STANDLEY CR RD (PRIVATE)

01-MEN-101-R102.46, Mendocino, CA

Built 1974 Load: 33.7 t ADT: 6,100

OLD RIVER ROAD

Fair

Over: CRAWFORD CREEK

13.3 MI N/W FROM US 101, Mendocino, CA

Built 1948 Load: 33.7 t ADT: 777

NORTH STATE ST

Fair

Over: FORSYTHE CREEK

1.0 MI N HWY 20 E, Mendocino, CA

Built 1949 Load: 33.7 t ADT: 20,200

US HIGHWAY 101 SB

Fair

Over: POMO LANE

01-MEN-101-28.58, Mendocino, CA

Built 1962 Load: 34.0 t ADT: 12,300

US HIGHWAY 101 NB

Fair

Over: POMO LANE

01-MEN-101-28.58, Mendocino, CA

Built 1962 Load: 34.0 t ADT: 12,300

OLD SHERWOOD RD

Fair

Over: LONG VALLEY CREEK

ADJ TO US 101, Mendocino, CA

Built 1989 Load: 34.0 t ADT: 81

ROAD 20N05

Fair

Over: EEL RIVER

38 MI. WEST OF ELK CREEK, Mendocino, CA

Built 1981 Load: 35.3 t ADT: 5

REEVES CANYON ROAD

Fair

Over: MILL CREEK

4.3 MI W SR 101, Mendocino, CA

Built 1999 Load: 36.0 t ADT: 51

US HIGHWAY 101 SB

Fair

Over: YORK CREEK

01-MEN-101-28.26, Mendocino, CA

Built 1962 Load: 37.3 t ADT: 12,300

US HIGHWAY 101 NB

Fair

Over: YORK CREEK

01-MEN-101-28.26, Mendocino, CA

Built 1962 Load: 37.3 t ADT: 12,300

STATE ROUTE 20

Fair

Over: COLD CREEK

01-MEN-020-R37.90, Mendocino, CA

Built 1967 Load: 37.6 t ADT: 10,400

U.S. HIGHWAY 101

Fair

Over: JITNEY GULCH

01-MEN-101-93.01, Mendocino, CA

Built 1965 Load: 37.6 t ADT: 6,100

STATE ROUTE 128

Fair

Over: MAPLE CREEK

01-MEN-128-36.15, Mendocino, CA

Built 1939 Load: 37.6 t ADT: 2,050

FISH ROCK RD

Fair

Over: PARDALOE CREEK

5.30 MI W SR 128, Mendocino, CA

Built 1960 Load: 38.6 t ADT: 165

STATE ROUTE 1

Fair

Over: BIG RIVER

01-MEN-001-50.17, Mendocino, CA

Built 1961 Load: 41.1 t ADT: 6,300

Read our methodology — how this data is sourced, computed, and verified.

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Data sourced from official U.S. government datasets. See our methodology for details. Retrieved and formatted by PlainBridges Editorial