Mendocino County, CA

357 public highway bridges

Mendocino County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Mendocino County, California contains 357 public highway bridges. Roughly 32.2% are rated “Good,” 51.8% “Fair,” and 7.3% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.

Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.

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

357
Total Bridges
32.2%
Good
51.8%
Fair
7.3%
Poor Condition

Condition Distribution

Good
32.2% (115)
Fair
51.8% (185)
Poor
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 public datasets. See our methodology for details. Retrieved and formatted by PlainBridges

Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.