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)

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.

Related

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