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)

EL ROBLE OC

Unknown

Over: U.S. HIGHWAY 101

01-MEN-101-19.68, Mendocino, CA

Built 1963 ADT: 14,100

ROBINSON OC

Unknown

Over: U.S. HIGHWAY 101

01-MEN-101-20.71, Mendocino, CA

Built 1963 ADT: 14,700

US HIGHWAY 101 S

Unknown

Over: ROUTE 20

01-MEN-101-T43.76, Mendocino, CA

Built 2016 ADT: 10,400

US HIGHWAY 101 N

Unknown

Over: ROUTE 20

01-MEN-101-T43.75, Mendocino, CA

Built 2016 ADT: 10,400

STATE ROUTE 271

Unknown

Over: U.S. 101 (@ PM R89.56)

01-MEN-271-5.58, Mendocino, CA

Built 1970 ADT: 6,100

US HIGHWAY 101

Unknown

Over: EAST HILL ROAD

01-MEN-101-44.99, Mendocino, CA

Built 2016 ADT: 1,000

US HIGHWAY 101

Unknown

Over: HAEHL,BAECHTL,CV RD,C ST

01-MEN-101-46.43-WLTS, Mendocino, CA

Built 2016 ADT: 1,000

US HIGHWAY 101

Unknown

Over: QUAIL MEADOWS ROAD

01-MEN-101-48.12, Mendocino, CA

Built 2016 ADT: 1,000

STATE ROUTE 20

Unknown

Over: EAST ROAD

01-MEN-020-33.77, Mendocino, CA

Built 1958 ADT: 250

TREATMENT PLANT RD

Unknown

Over: U.S. HIGHWAY 101

01-MEN-101-R21.80, Mendocino, CA

Built 1964 ADT: 16,700

STATE ROUTE 253

Unknown

Over: U.S. 101 (@ PM R21.59)

01-MEN-253-17.16, Mendocino, CA

Built 1964 ADT: 14,700

OAK MANOR SCH POC

Unknown

Over: U.S. HIGHWAY 101

01-MEN-101-R24.30-UKI, Mendocino, CA

Built 1968 ADT: 20,900

SR 222 (TALMADGE)

Unknown

Over: U.S. 101 (@ PM R23.45)

01-MEN-222-L0.50, Mendocino, CA

Built 1964 ADT: 20,900

E GOBBI ST

Unknown

Over: U.S. HIGHWAY 101

01-MEN-101-R24.06-UKI, Mendocino, CA

Built 1964 ADT: 20,900

EAST PERKINS ST

Unknown

Over: U.S. HIGHWAY 101

01-MEN-101-R24.53-UKI, Mendocino, CA

Built 1964 ADT: 20,900

US HIGHWAY 101 SB

Unknown

Over: NORTH STATE STREET

01-MEN-101-R26.16, Mendocino, CA

Built 1964 ADT: 9,300

US 101 NB

Unknown

Over: NORTH STATE STREET

01-MEN-101-R26.16, Mendocino, CA

Built 1964 ADT: 9,300

MASONITE ROAD

Unknown

Over: U.S. HIGHWAY 101

01-MEN-101-26.37, Mendocino, CA

Built 1962 ADT: 27,500

ORR SPRINGS ROAD

Unknown

Over: U.S. HIGHWAY 101

01-MEN-101-26.39, Mendocino, CA

Built 1962 ADT: 27,500

US HIGHWAY 101 SB

Unknown

Over: LAKE MENDOCINO DR

01-MEN-101-27.41, Mendocino, CA

Built 1962 ADT: 1,200

US HIGHWAY 101 NB

Unknown

Over: LAKE MENDOCINO DR

01-MEN-101-27.41, Mendocino, CA

Built 1962 ADT: 1,200

PARDUCCI ROAD

Unknown

Over: U.S. HIGHWAY 101

01-MEN-101-27.92, Mendocino, CA

Built 1962 ADT: 24,600

US HIGHWAY 101 SB

Unknown

Over: MOORE STREET

01-MEN-101-30.43, Mendocino, CA

Built 1962 ADT: 650

US HIGHWAY 101 NB

Unknown

Over: MOORE STREET

01-MEN-101-30.43, Mendocino, CA

Built 1962 ADT: 650

US HIGHWAY 101 SB

Unknown

Over: ST RTE 20 (@ PM 33.22)

01-MEN-101-30.82, Mendocino, CA

Built 1962 ADT: 11,500

US HIGHWAY 101 NB

Unknown

Over: ST RTE 20 (@ PM 33.22)

01-MEN-101-30.82, Mendocino, CA

Built 1962 ADT: 11,500

NORTH STATE ST

Unknown

Over: STATE ROUTE 20

01-MEN-020-33.31, Mendocino, CA

Built 1962 ADT: 11,500

CENTRAL AVE

Unknown

Over: U.S. HIGHWAY 101

01-MEN-101-29.84, Mendocino, CA

Built 1962 ADT: 24,600

NORTH STATE ST

Unknown

Over: W20-N101 CONNECTOR RAMP

01-MEN-020-33.32, Mendocino, CA

Built 1962 ADT: 2,875

STATE ROUTE 271

Unknown

Over: U.S. 101 (@ PM R101.90)

01-MEN-271-17.03, Mendocino, CA

Built 1976 ADT: 6,100

WEST ROAD

Unknown

Over: U.S. HIGHWAY 101

01-MEN-101-R32.63, Mendocino, CA

Built 1990 ADT: 19,000

E VALLEY ST

Fair

Over: BROADDUS CREEK

0.1 MI EAST OF US 101, Mendocino, CA

Built 1993 Load: 9.4 t ADT: 1,000

HULL VALLEY RD

Fair

Over: HULLS CREEK

5.3 MI NE JCT MINA RD, Mendocino, CA

Built 1994 Load: 9.4 t ADT: 11

REEVES CANYON ROAD

Fair

Over: MILL CREEK

4.6 MI W SR 101, Mendocino, CA

Built 1980 Load: 11.3 t ADT: 105

REYNOLDS HIGHWAY

Fair

Over: OUTLET CREEK

1.1 MI WEST OF US 101, Mendocino, CA

Built 1955 Load: 13.0 t ADT: 19

RG STATE PARK ROAD

Fair

Over: RUSSIAN GULCH

RUSSIAN GULCH STATE PARK, Mendocino, CA

Built 1960 Load: 13.0 t ADT: 45

IRR BRANSCOMB RD

Fair

Over: TENMILE CREEK

25.41 MI E OF SH 1, Mendocino, CA

Built 1952 Load: 14.3 t ADT: 2,216

HEARST-WILLITS RD

Fair

Over: EEL RIVER

5.4 MI N JCT TOMKI RD, Mendocino, CA

Built 1957 Load: 14.6 t ADT: 66

N STATE ST

Fair

Over: ORRS CREEK

24.9 MI N SON CO LINE, Mendocino, CA

Built 1926 Load: 14.9 t ADT: 18,278

ORR SPRINGS RD

Fair

Over: SOUTH FORK BIG RIVER

13.5 MI W US 101, Mendocino, CA

Built 1971 Load: 15.2 t ADT: 134

HOLLANDS LANE

Fair

Over: BRANCH OF HAEHL CREEK

0.2 MI W US 101, Mendocino, CA

Built 1925 Load: 15.6 t ADT: 62

U.S. HIGHWAY 101

Fair

Over: LONG VALLEY CREEK

01-MEN-101-63.47, Mendocino, CA

Built 1959 Load: 16.5 t ADT: 6,700

STATE ROUTE 1

Fair

Over: SOUTH FORK EEL RIVER

01-MEN-001-104.96, Mendocino, CA

Built 1944 Load: 16.8 t ADT: 700

REEVES CANYON ROAD

Fair

Over: MILL CREEK

5.6 MI W SR 101, Mendocino, CA

Built 1980 Load: 17.2 t ADT: 105

ORR SPRINGS RD

Fair

Over: SOUTH FORK BIG RIVER

14.5 MI W US 101, Mendocino, CA

Built 1959 Load: 17.2 t ADT: 1,002

WILDERNESS LDGE RD

Fair

Over: DUTCH CHARLIE CREEK

0.7 MI N OF BRANSCOMB RD, Mendocino, CA

Built 1969 Load: 17.8 t ADT: 104

HEARST-WILLITS RD

Fair

Over: HAEHL CREEK

0.8 MI E JCT SR 101, Mendocino, CA

Built 1952 Load: 17.8 t ADT: 1,375

HEARST-WILLITS RD

Fair

Over: DAVIS CREEK

1.3 MI E SH 101, Mendocino, CA

Built 1950 Load: 17.8 t ADT: 1,648

U.S. HIGHWAY 101

Fair

Over: MCNAB CREEK

01-MEN-101-15.94, Mendocino, CA

Built 1942 Load: 18.8 t ADT: 13,800

STATE ROUTE 20

Fair

Over: CHAMBERLAIN CREEK

01-MEN-020-17.29, Mendocino, CA

Built 1948 Load: 18.8 t ADT: 2,600

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.