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)

BRANSCOMB RD

Good

Over: REDWOOD CREEK

10.1 MI E OF SH 1, Mendocino, CA

Built 1967 Load: 29.8 t ADT: 104

RUDDCK-CUNNINHM RD

Good

Over: HOWELL CREEK

0.18 MI N HOWELL CREEK RD, Mendocino, CA

Built 1958 Load: 29.8 t ADT: 619

STATE ROUTE 1

Good

Over: DE HAVEN CREEK

01-MEN-001-R79.22, Mendocino, CA

Built 1964 Load: 31.1 t ADT: 830

HEARST-WILLITS RD

Good

Over: SALT CREEK

4.4 MI NE JCT TOMKI RD, Mendocino, CA

Built 1970 Load: 31.4 t ADT: 108

US HIGHWAY 101 SB

Good

Over: GIBSON CREEK

01-MEN-101-R24.32-UKI, Mendocino, CA

Built 1964 Load: 31.8 t ADT: 10,450

US HIGHWAY 101 NB

Good

Over: GIBSON CREEK

01-MEN-101-R24.32-UKI, Mendocino, CA

Built 1964 Load: 31.8 t ADT: 10,450

STATE ROUTE 128

Good

Over: MILL CREEK

01-MEN-128-17.88, Mendocino, CA

Built 1931 Load: 32.4 t ADT: 3,300

STATE ROUTE 162

Good

Over: TOWN CREEK

01-MEN-162-28.74, Mendocino, CA

Built 1983 Load: 32.4 t ADT: 2,200

STATE ROUTE 20

Good

Over: BROADDUS CREEK

01-MEN-020-31.20, Mendocino, CA

Built 1991 Load: 32.4 t ADT: 2,700

STATE ROUTE 20

Good

Over: BROADDUS CREEK

01-MEN-020-31.56, Mendocino, CA

Built 1991 Load: 32.4 t ADT: 2,700

RTE 101S - RTE 20W

Good

Over: HAEHL CREEK

01-MEN-101-R43.79, Mendocino, CA

Built 2016 Load: 32.4 t ADT: 8,000

RTE 20E - RTE 101N

Good

Over: HAEHL CREEK

01-MEN-101-R43.79, Mendocino, CA

Built 2016 Load: 32.4 t ADT: 8,000

STATE ROUTE 1

Good

Over: GREENWOOD CREEK

01-MEN-001-33.63, Mendocino, CA

Built 2014 Load: 32.4 t ADT: 1,100

STATE ROUTE 1

Good

Over: PUDDING CREEK

01-MEN-001-62.12-FBG, Mendocino, CA

Built 1959 Load: 32.4 t ADT: 23,950

US HIGHWAY 101

Good

Over: HAEHL CREEK

01-MEN-101-45.52, Mendocino, CA

Built 2016 Load: 32.4 t ADT: 18,000

U.S. HIGHWAY 101

Good

Over: BAKER CREEK

01-MEN-101-R33.52, Mendocino, CA

Built 1971 Load: 32.4 t ADT: 19,000

US HIGHWAY 101

Good

Over: RAILROAD TRACKS

01-MEN-101-47.83, Mendocino, CA

Built 2016 Load: 32.4 t ADT: 18,000

US HIGHWAY 101

Good

Over: UPP CREEK

01-MEN-101-48.29, Mendocino, CA

Built 2016 Load: 32.4 t ADT: 16,000

ROUTE 101S OFFRAMP

Good

Over: UPP CREEK

01-MEN-101-48.27, Mendocino, CA

Built 2016 Load: 32.4 t ADT: 8,000

ROUTE 101N ONRAMP

Good

Over: UPP CREEK

01-MEN-101-48.31, Mendocino, CA

Built 2016 Load: 32.4 t ADT: 8,000

U.S. HIGHWAY 101

Good

Over: CO RD,SOUTH FORK EEL RIV

01-MEN-101-R106.57, Mendocino, CA

Built 1970 Load: 32.4 t ADT: 6,100

U.S. HIGHWAY 101

Good

Over: AUSTIN CREEK

01-MEN-101-R23.82, Mendocino, CA

Built 1964 Load: 32.4 t ADT: 20,900

STATE ROUTE 162

Good

Over: MIDDLE FORK EEL RIVER

01-MEN-162-15.14, Mendocino, CA

Built 1985 Load: 32.4 t ADT: 860

STATE ROUTE 1

Good

Over: TEN MILE RIVER

01-MEN-001-69.65, Mendocino, CA

Built 2009 Load: 32.4 t ADT: 1,500

US HIGHWAY 101

Good

Over: FROG WOMAN SLIDE

01-MEN-101-4.95, Mendocino, CA

Built 1998 Load: 32.4 t ADT: 13,300

STATE ROUTE 1

Good

Over: MILL CREEK

01-MEN-001-R64.91, Mendocino, CA

Built 1993 Load: 32.4 t ADT: 5,600

STATE ROUTE 1

Good

Over: HATHAWAY CREEK

01-MEN-001-17.67, Mendocino, CA

Built 1995 Load: 32.4 t ADT: 2,100

STATE ROUTE 1

Good

Over: OCEANSIDE BLUFF

01-MEN-001-82.05, Mendocino, CA

Built 1999 Load: 32.4 t ADT: 1,185

STATE ROUTE 001

Good

Over: NOYO RIVER & HARBOR DR

01-MEN-001-60.23-FBG, Mendocino, CA

Built 2005 Load: 32.4 t ADT: 23,950

U.S. HIGHWAY 101

Good

Over: SOUTH FORK EEL RIVER

01-MEN-101-R100.02, Mendocino, CA

Built 2009 Load: 32.4 t ADT: 6,100

STATE ROUTE 222

Good

Over: RUSSIAN RIVER

01-MEN-222-0.98, Mendocino, CA

Built 2011 Load: 32.4 t ADT: 8,000

US HIGHWAY 101

Good

Over: UPP CREEK

01-MEN-101U-48.14, Mendocino, CA

Built 2017 Load: 32.4 t ADT: 8,000

ROUTE 271

Good

Over: MC COY CREEK

01-MEN-271-17.86, Mendocino, CA

Built 2019 Load: 32.4 t ADT: 150

SR 001

Good

Over: WESTPORT NORTH SIDEHILL

01-MEN-001-83.30, Mendocino, CA

Built 2018 Load: 32.4 t ADT: 830

OLD RIVER ROAD

Good

Over: MORRISON CREEK

4 MI S SR 222, Mendocino, CA

Built 1996 Load: 32.4 t ADT: 1,115

UVA DRIVE

Good

Over: FORSYTHE CREEK

1/4 MI S OF SR 101, Mendocino, CA

Built 1990 Load: 32.4 t ADT: 1,830

BRANSCOMB ROAD

Good

Over: KENNY CREEK

1.2 MI W/O BRANSCOMB RD, Mendocino, CA

Built 1957 Load: 32.4 t ADT: 104

COUNTY RD 110

Good

Over: JOHNSON CREEK

0.7 MI S/E JCT CR 109, Mendocino, CA

Built 1993 Load: 32.4 t ADT: 114

BLOSSER LANE

Good

Over: BROADDUS CREEK

JUST SOUTH SR 20, Mendocino, CA

Built 1989 Load: 32.4 t ADT: 750

FLYNN CREEK RD 135

Good

Over: MARSH CREEK

CR 135 MP8.10, S COMPTCHE, Mendocino, CA

Built 2007 Load: 32.4 t ADT: 670

FLYNN CREEK RD 135

Good

Over: ALBION RIVER

CR 135 MP8.13, S COMPTCHE, Mendocino, CA

Built 2008 Load: 32.4 t ADT: 670

CR 110

Good

Over: FELIZ CREEK

0.1 MI SE JCT WITH CR 109, Mendocino, CA

Built 2013 Load: 32.4 t ADT: 117

MUIR MILL RD 301C

Good

Over: BAECHTEL CREEK

2 MI SW OF SR 20-MAIN ST, Mendocino, CA

Built 2016 Load: 32.4 t ADT: 311

REEVES CANYON ROAD

Good

Over: FORSYTHE CREEK

0.5 MI WEST OF US 101, Mendocino, CA

Built 2018 Load: 32.4 t ADT: 130

RYAN CREEK ROAD

Good

Over: RYAN CREEK

0.25 MI WEST OF HWY 101, Mendocino, CA

Built 2011 Load: 32.4 t ADT: 150

SCHOOL WAY

Good

Over: WEST BRANCH RUSSIAN RIV

1.14 MI FROM US 101, Mendocino, CA

Built 2016 Load: 32.4 t ADT: 3,521

SHERWOOD RD, CR311

Good

Over: ROWES CREEK

6.0 MI NW US 101, Mendocino, CA

Built 2020 Load: 32.4 t ADT: 721

EAST HILL ROAD

Good

Over: DAVIS CREEK

1.2 MI EAST OF HILLTOP DR, Mendocino, CA

Built 2019 Load: 32.4 t ADT: 2,000

POWERHOUSE RD 248A

Good

Over: WILLIAMS CREEK

0.3 MI SOUTH GIBSON LANE, Mendocino, CA

Built 2020 Load: 32.4 t ADT: 134

NORTH MAIN STREET

Good

Over: WILLITS CREEK (MILL CRK)

0.8 MI N OF SR 20-MAIN ST, Mendocino, CA

Built 1923 Load: 32.4 t ADT: 7,200

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.