State profile · Below median Poor share

California bridge safety

Condition ratings, load ratings, and Poor-condition data for every public highway bridge in California, based on the FHWA National Bridge Inventory.

27,040
Public bridges
32.5%
Good condition
4.6%
Poor condition

Data updated May 2026

Total Bridges

27,040

Public highway bridges in California

Good Condition

32.5%

8,777 bridges rated 7-9

-17.5pp vs 50% benchmark

Poor Condition

4.6%

1,244 bridges whose lowest applicable component is rated 0-4

-2.4pp vs national avg 7.0%

California vs national bridge condition

California - Good condition share 32.5%
National avg

Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).

California - Poor-condition share 15.3%
National avg

Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.0%.

Condition Distribution

California45.2%48.3%GoodFairPoor
Bridge inventory deck-condition mix - California (FHWA NBI)

Counties (58)

Alameda 800 Alpine 32 Amador 62 Butte 441 Calaveras 106 Colusa 211 Contra Costa 686 Del Norte 96 El Dorado 196 Fresno 929 Glenn 242 Humboldt 398 Imperial 448 Inyo 67 Kern 686 Kings 168 Lake 129 Lassen 108 Los Angeles 3937 Madera 250 Marin 217 Mariposa 109 Mendocino 357 Merced 532 Modoc 87 Mono 49 Monterey 390 Napa 160 Nevada 135 Orange 1224 Placer 347 Plumas 170 Riverside 1142 Sacramento 775 San Benito 76 San Bernardino 1465 San Diego 1707 San Francisco 170 San Joaquin 666 San Luis Obispo 408 San Mateo 393 Santa Barbara 429 Santa Clara 1041 Santa Cruz 203 Shasta 500 Sierra 65 Siskiyou 423 Solano 383 Sonoma 613 Stanislaus 390 Sutter 120 Tehama 452 Trinity 194 Tulare 599 Tuolumne 128 Ventura 511 Yolo 282 Yuba 136

California vs nearby ranks

Adjacent states by Poor-condition share (lower share = better)

States are ranked by the share of bridges whose lowest applicable component rating is 4 or below. This describes recorded condition; it does not measure funding effectiveness or live crossing safety. States here sit immediately above and below California on the same metric.

OH

Ohio

4.54% top marginal rate
Structure
Progressive
Burden @ $100K
$26,753

NJ

New Jersey

4.59% top marginal rate
Structure
Progressive
Burden @ $100K
$6,796
Selected

CA

California

4.60% top marginal rate
Structure
Progressive
Burden @ $100K
$27,040

AR

Arkansas

4.71% top marginal rate
Structure
Progressive
Burden @ $100K
$5,544

WA

Washington

4.81% top marginal rate
Structure
Progressive
Burden @ $100K
$8,808

Bridges Needing Most Attention in California

Six lowest-condition bridges in California, ranked by the portal's composite display score. Inspection intervals are risk-based under current NBIS rules.

SPRING CREEK RD

Poor

Over: FALL RIVER

0.5 MI N OF MCARTHUR RD, Shasta, CA

Built 1950 Load: 2.7 t ADT: 50

ORESTIMBA ROAD

Poor

Over: CCID MAIN CANAL

0.1 MI E DRAPER RD, Stanislaus, CA

Built 1919 Load: 2.9 t ADT: 684

CLARK STREET

Poor

Over: M.I.D. CANAL

0.1 MI WEST OF ROAD 26.0, Madera, CA

Built 1955 Load: 3.2 t ADT: 200

GULLING STREET

Poor

Over: MIDDLE FORK FEATHER RIV

0.2 MI S SH 70, Plumas, CA

Built 1954 Load: 3.2 t ADT: 10,046

AVENUE 10

Poor

Over: COTTONWOOD CREEK

JUST E/O ROAD 23, Madera, CA

Built 1950 Load: 3.6 t ADT: 50

S BISHOP AVE

Poor

Over: CRESCENT DITCH

0.64 MI S/O MT WHITNEY AV, Fresno, CA

Built 1950 Load: 3.9 t ADT: 125

All Bridges in California

AVENUE 9

Unknown

Over: SR 99

06-MAD-099-R3.56, Madera, CA

Built 1964 ADT: 65,000

AVENUE 7

Unknown

Over: SR 99

06-MAD-099-R0.99, Madera, CA

Built 1964 ADT: 65,000

S59-E152&E152-N59

Unknown

Over: STATE ROUTE 152

06-MAD-059-L0.32, Madera, CA

Built 1967 ADT: 16,750

AVENUE 17

Unknown

Over: SR 99

06-MAD-099-R14.22, Madera, CA

Built 1973 ADT: 58,000

AVENUE 18 1/2

Unknown

Over: SR 99

06-MAD-099-R16.33, Madera, CA

Built 1974 ADT: 56,000

AVENUE 20

Unknown

Over: SR 99

06-MAD-099-R18.68, Madera, CA

Built 1980 ADT: 56,000

AVENUE 21 1/2

Unknown

Over: SR 99

06-MAD-099-20.90, Madera, CA

Built 2009 ADT: 56,000

VALLEY CHILDREN PL

Unknown

Over: STATE ROUTE 41

06-MAD-041-1.20, Madera, CA

Built 2000 ADT: 28,000

ELLIS ST

Unknown

Over: SR 99, UP RR, GOLDEN STA

06-MAD-099-13.07-MAD, Madera, CA

Built 2012 ADT: 1,000

AVENUE 12

Unknown

Over: SR 99

06-MAD-099-R7.10, Madera, CA

Built 2016 ADT: 56,000

U.S. HIGHWAY 101

Unknown

Over: CORTE MADERA CR & SFD BL

04-MRN-101-8.47-LKSP, Marin, CA

Built 1957 ADT: 15,000

U.S. HIGHWAY 101

Unknown

Over: CORTE MADERA CR & SFD BL

04-MRN-101-8.47-LKSP, Marin, CA

Built 1961 ADT: 32,990

U.S. HIGHWAY 101

Unknown

Over: SR 1, RICH BY, FRNTGE RD

04-MRN-101-4.03-SAUS, Marin, CA

Built 1957 ADT: 30,500

N101-SAN PEDRO RD

Unknown

Over: NORTH SAN PEDRO ROAD

04-MRN-101-12.69-SRF, Marin, CA

Built 1970 ADT: 16,800

U.S. HIGHWAY 101

Unknown

Over: LINCOLN AVE-N101 ON RAMP

04-MRN-101-12.19-SRF, Marin, CA

Built 1938 ADT: 25,100

U.S. HIGHWAY 101

Unknown

Over: LINDEN LANE

04-MRN-101-11.64-SRF, Marin, CA

Built 1947 ADT: 7,500

U.S. HIGHWAY 101

Unknown

Over: 2ND, 3RD, 4TH, 5TH, MSSN

04-MRN-101-10.72-SRF, Marin, CA

Built 1965 ADT: 12,900

U. S. HIGHWAY 101

Unknown

Over: 2ND, 3RD, 4TH, 5TH, MSSN

04-MRN-101-10.72-SRF, Marin, CA

Built 1941 ADT: 36,900

U.S. HIGHWAY 101

Unknown

Over: SAUSALITO ROAD

04-MRN-101-0.32-SAUS, Marin, CA

Built 1935 ADT: 10,415

U.S. HIGHWAY 101

Unknown

Over: DONAHUE ST/N. BRIDGE BLD

04-MRN-101-3.33-SAUS, Marin, CA

Built 1943 ADT: 5,920

PEDESTRIAN WALKWAY

Unknown

Over: U.S. HIGHWAY 101

04-MRN-101-11.41-SRF, Marin, CA

Built 1969 ADT: 173,000

U.S. HIGHWAY 101

Unknown

Over: LUCAS VALLEY ROAD

04-MRN-101-14.71-SRF, Marin, CA

Built 1952 ADT: 15,950

SB101-E580 CONNECT

Unknown

Over: US HIGHWAY 101

04-MRN-101-9.94-SRF, Marin, CA

Built 2009 ADT: 165,000

WOLFBACK RIDGE RD

Unknown

Over: U.S. HIGHWAY 101

04-MRN-101-1.52-SAUS, Marin, CA

Built 1954 ADT: 106,000

U.S. HIGHWAY 101

Unknown

Over: US 101 ON & OFF RAMPS

04-MRN-101-1.68-SAUS, Marin, CA

Built 1954 ADT: 1,676

STATE ROUTE 131

Unknown

Over: US HIGHWAY 101

04-MRN-131-0.01, Marin, CA

Built 1956 ADT: 133,000

TAMALPAIS DRIVE

Unknown

Over: US HIGHWAY 101

04-MRN-101-7.37-CMAD, Marin, CA

Built 1957 ADT: 166,000

STATE ROUTE 580

Unknown

Over: BELLAM BOULEVARD

04-MRN-580-4.50-SRF, Marin, CA

Built 1959 ADT: 29,468

STATE ROUTE 580

Unknown

Over: BELLAM BOULEVARD

04-MRN-580-4.50-SRF, Marin, CA

Built 2010 ADT: 29,468

SIR FRAN DRAKE BLV

Unknown

Over: STATE ROUTE 580

04-MRN-580-3.29-SRF, Marin, CA

Built 1957 ADT: 67,000

PEDESTRIAN WALKWAY

Unknown

Over: U.S. HIGHWAY 101

04-MRN-101-4.75-CMAD, Marin, CA

Built 1957 ADT: 133,000

PEDESTRIAN WALKWAY

Unknown

Over: U.S. HIGHWAY 101

04-MRN-101-8.29-LKSP, Marin, CA

Built 1959 ADT: 172,000

STATE ROUTE 37

Unknown

Over: ATHERTON AVENUE

04-MRN-037-13.77, Marin, CA

Built 1959 ADT: 4,510

STATE ROUTE 37

Unknown

Over: ATHERTON AVENUE

04-MRN-037-13.77, Marin, CA

Built 1959 ADT: 4,510

FREITAS PKWY

Unknown

Over: U.S. HIGHWAY 101

04-MRN-101-13.71-SRF, Marin, CA

Built 1960 ADT: 1,700

W37-N101 CONNECTOR

Unknown

Over: NOVATO BL-N101, NWP RR

04-MRN-037-R11.23-NVTO, Marin, CA

Built 1964 ADT: 3,800

W37-S101&N101 OFF

Unknown

Over: COUNTY RD, US 101, NWPRR

04-MRN-037-R11.20-NVTO, Marin, CA

Built 1964 ADT: 900

MILLER CREEK ROAD

Unknown

Over: U.S. HIGHWAY 101

04-MRN-101-15.57, Marin, CA

Built 1961 ADT: 5,000

IGNACIO BOULEVARD

Unknown

Over: U.S. HIGHWAY 101

04-MRN-101-18.09-NVTO, Marin, CA

Built 1964 ADT: 5,000

CLAY ST / NAVE DR

Unknown

Over: U.S. HIGHWAY 101

04-MRN-101-16.64-NVTO, Marin, CA

Built 1964 ADT: 150,000

S101-E37 & NOVATO-

Unknown

Over: U.S. HIGHWAY 101

04-MRN-101-18.88-NVTO, Marin, CA

Built 1964 ADT: 143,000

S NOVATO BLVD

Unknown

Over: W37-S101 CONNECTOR RAMP

04-MRN-101-18.94-NVTO, Marin, CA

Built 1964 ADT: 11,000

ROWLAND BOULEVARD

Unknown

Over: U.S. HIGHWAY 101

04-MRN-101-R20.19-NVTO, Marin, CA

Built 1974 ADT: 123,000

DE LONG AVENUE

Unknown

Over: U.S. HIGHWAY 101

04-MRN-101-R21.11-NVTO, Marin, CA

Built 1974 ADT: 123,000

U.S. HWY 101 SB

Unknown

Over: OLIVE AVENUE

04-MRN-101-R21.47-NVTO, Marin, CA

Built 1974 ADT: 4,400

U.S. HWY 101 NB

Unknown

Over: OLIVE AVENUE

04-MRN-101-R21.47-NVTO, Marin, CA

Built 1974 ADT: 4,400

ATHERTON AVENUE

Unknown

Over: U.S. HIGHWAY 101

04-MRN-101-R22.00-NVTO, Marin, CA

Built 1974 ADT: 123,000

ROUTE 101 NB

Unknown

Over: RUSH LANDING RD & NWP RR

04-MRN-101-R22.27-NVTO, Marin, CA

Built 1974 ADT: 2,000

N&S101-E37 CONNCTR

Unknown

Over: S NOVATO BL,N101 & NWPRR

04-MRN-101-18.96-NVTO, Marin, CA

Built 1964 ADT: 800

MERRYDALE ROAD

Unknown

Over: US 101 & MERRYDALE RD

04-MRN-101-13.50-SRF, Marin, CA

Built 1996 ADT: 167,000

Showing 3,201-3,250 of 27,040 bridges

Related

All states → | National rankings → | Understanding conditions → | Retired SD term explained →
Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges.

Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the FHWA National Bridge Inventory (NBI). Poor condition is an inspection-record category, not a closure or unsafe-to-cross designation. Consult the bridge owner for current status.

Understanding Bridge Conditions

How FHWA rates bridge condition on a 0-9 scale.

Check Your Daily Bridges

How to look up bridge condition data for bridges on your route.

Read our methodology — how this data is sourced, computed, and verified.

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.