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)

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