State profile · Below median Poor share

California bridge safety

According to the Federal Highway Administration's 2024 National Bridge Inventory, condition ratings, load ratings, and Poor-condition shares for every public highway bridge in California.

25,848
Public bridges
45.6%
Good condition
5.9%
Poor condition

California holds 25,848 public highway bridges (#4 of 52 by inventory) with a 5.91% Poor share (#28 of 52 by Poor share).

That is 5.9% of the state's inventory, against an average of 7.5% across the 54 states and territories with Poor-rated bridges on file, which places it 25 of 54 ordered from the lowest Poor share upward. A bridge is rated Poor when its weakest applicable component scores 4 or below on the inspecting agency's 0-9 scale, so the category is a maintenance and funding signal rather than a closure order or a live crossing-safety verdict.

Inventory: FHWA NBI 2024 · last ETL August 2026

Total Bridges

25,848

Public highway bridges in California

Good Condition

45.6%

11,798 bridges rated 7-9

-4.4pp vs 50% benchmark

Poor Condition

5.9%

1,527 bridges whose lowest applicable component is rated 0-4

-1.6pp vs national avg 7.5%

California vs national bridge condition

California - Good condition share 45.6%
National avg

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

California - Poor-condition share 19.7%
National avg

Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.5%.

California in the national condition pattern

Each point is a state or territory in the FHWA NBI; the highlighted point is this profile.

Inventory size and Poor-condition share are different measures: California has 25,848 bridges and a 5.9% Poor-condition share in the 2024 NBI, rank #25 of 54 jurisdictions ordered from the lowest share upward. The dashed comparisons mark the national average state rate and the midpoint of the plotted inventory range; neither is a live safety or closure threshold. Scatter plot of 54 data points. 0%10%20%30%40% 0k20k40k60k Public bridges in inventory (thousands) Poor-condition share (%) CA, Public bridges in inventory (thousands): 25.8k · Poor-condition share (%): 5.91%AL, Public bridges in inventory (thousands): 16.2k · Poor-condition share (%): 3.35%AK, Public bridges in inventory (thousands): 1.7k · Poor-condition share (%): 7.89%AZ, Public bridges in inventory (thousands): 8.6k · Poor-condition share (%): 1.15%AR, Public bridges in inventory (thousands): 13k · Poor-condition share (%): 5.43%CO, Public bridges in inventory (thousands): 9k · Poor-condition share (%): 4.82%CT, Public bridges in inventory (thousands): 4.4k · Poor-condition share (%): 4.72%DE, Public bridges in inventory (thousands): 0.9k · Poor-condition share (%): 1.26%DC, Public bridges in inventory (thousands): 0.3k · Poor-condition share (%): 1.95%FL, Public bridges in inventory (thousands): 13k · Poor-condition share (%): 2.79%GA, Public bridges in inventory (thousands): 15.1k · Poor-condition share (%): 1.59%GU, Public bridges in inventory (thousands): 0k · Poor-condition share (%): 12.77%HI, Public bridges in inventory (thousands): 1.2k · Poor-condition share (%): 6.53%ID, Public bridges in inventory (thousands): 4.6k · Poor-condition share (%): 4.9%IL, Public bridges in inventory (thousands): 26.9k · Poor-condition share (%): 9.35%IN, Public bridges in inventory (thousands): 19.5k · Poor-condition share (%): 5.22%IA, Public bridges in inventory (thousands): 23.7k · Poor-condition share (%): 19.16%KS, Public bridges in inventory (thousands): 24.9k · Poor-condition share (%): 5.26%KY, Public bridges in inventory (thousands): 14.5k · Poor-condition share (%): 7.37%LA, Public bridges in inventory (thousands): 12.7k · Poor-condition share (%): 11.48%ME, Public bridges in inventory (thousands): 2.5k · Poor-condition share (%): 15.41%MD, Public bridges in inventory (thousands): 5.5k · Poor-condition share (%): 4.56%MA, Public bridges in inventory (thousands): 5.3k · Poor-condition share (%): 8.88%MI, Public bridges in inventory (thousands): 11.4k · Poor-condition share (%): 11.27%MN, Public bridges in inventory (thousands): 13.5k · Poor-condition share (%): 4.44%MS, Public bridges in inventory (thousands): 16.7k · Poor-condition share (%): 6.03%MO, Public bridges in inventory (thousands): 24.6k · Poor-condition share (%): 8.95%MT, Public bridges in inventory (thousands): 5.2k · Poor-condition share (%): 6.81%NE, Public bridges in inventory (thousands): 15.4k · Poor-condition share (%): 7.9%NV, Public bridges in inventory (thousands): 2.1k · Poor-condition share (%): 1.14%NH, Public bridges in inventory (thousands): 2.5k · Poor-condition share (%): 7.51%NJ, Public bridges in inventory (thousands): 6.8k · Poor-condition share (%): 6.01%NM, Public bridges in inventory (thousands): 4k · Poor-condition share (%): 4.51%NY, Public bridges in inventory (thousands): 17.6k · Poor-condition share (%): 9.43%NC, Public bridges in inventory (thousands): 19.2k · Poor-condition share (%): 6.76%ND, Public bridges in inventory (thousands): 4.3k · Poor-condition share (%): 10.98%OH, Public bridges in inventory (thousands): 26.7k · Poor-condition share (%): 4.74%OK, Public bridges in inventory (thousands): 22.9k · Poor-condition share (%): 7.7%OR, Public bridges in inventory (thousands): 8.3k · Poor-condition share (%): 4.61%PA, Public bridges in inventory (thousands): 23.3k · Poor-condition share (%): 12.58%PR, Public bridges in inventory (thousands): 2.4k · Poor-condition share (%): 13.92%RI, Public bridges in inventory (thousands): 0.8k · Poor-condition share (%): 15.2%SC, Public bridges in inventory (thousands): 9.5k · Poor-condition share (%): 6.17%SD, Public bridges in inventory (thousands): 5.9k · Poor-condition share (%): 16.36%TN, Public bridges in inventory (thousands): 20.4k · Poor-condition share (%): 4.41%TX, Public bridges in inventory (thousands): 56.7k · Poor-condition share (%): 1.23%UT, Public bridges in inventory (thousands): 3.1k · Poor-condition share (%): 2.91%VT, Public bridges in inventory (thousands): 2.9k · Poor-condition share (%): 2.9%VI, Public bridges in inventory (thousands): 0k · Poor-condition share (%): 29.17%VA, Public bridges in inventory (thousands): 14.1k · Poor-condition share (%): 3.39%WA, Public bridges in inventory (thousands): 8.5k · Poor-condition share (%): 5.45%WV, Public bridges in inventory (thousands): 7.3k · Poor-condition share (%): 18.64%WI, Public bridges in inventory (thousands): 14.4k · Poor-condition share (%): 6.52%WY, Public bridges in inventory (thousands): 3.1k · Poor-condition share (%): 6.51%
Inventory size and Poor-condition share are different measures: California has 25,848 bridges and a 5.9% Poor-condition share in the 2024 NBI, rank #25 of 54 jurisdictions ordered from the lowest share upward. The dashed comparisons mark the national average state rate and the midpoint of the plotted inventory range; neither is a live safety or closure threshold.

California vs all states by public bridge inventory

Where this state's FHWA NBI public-highway bridge count sits among every state and territory on PlainBridges

25,848 4th of 54 higher than 50 of 54 states

States and territories, banded by public bridge inventory size

Each bar is a band; taller bars hold more states. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.

Source FHWA National Bridge Inventory · 2024

Read the rank neighborhood for California

The highlighted point is California: 25,848 bridges and 5.91% in Poor condition, rank #25 of 54 jurisdictions ordered from the lowest share upward. The five jurisdictions immediately above and below California on that same Poor-share ordering:

  • Arkansas: 12,974 bridges · 5.43% Poor
  • Washington: 8,474 bridges · 5.45% Poor
  • California: 25,848 bridges · 5.91% Poor
  • New Jersey: 6,827 bridges · 6.01% Poor
  • Mississippi: 16,739 bridges · 6.03% Poor

The full national sortable table lives on the rankings page.

Material families in California

Exclusive FHWA material families across all 25,848 bridges in this state; continuous variants fold into the parent family. Orthogonal to the Poor-share scatter above.

Who maintains California’s inventory

State agency holds 48.8% of the 25,848 public highway bridges filed under California in the 2024 NBI, the agency-of-record split for this state, not a condition verdict.

When California’s bridges were built

Pre-1950 construction accounts for 15.5% of the 25,848 bridges with a recorded original year in California. Era bands are orthogonal to the Poor-share ranking above.

Condition Distribution

California45.6%48.4%GoodFairPoor
Bridge inventory deck-condition mix - California (FHWA NBI)

Counties (58)

Alameda 658 Alpine 32 Amador 61 Butte 437 Calaveras 105 Colusa 211 Contra Costa 618 Del Norte 96 El Dorado 192 Fresno 916 Glenn 242 Humboldt 396 Imperial 444 Inyo 66 Kern 668 Kings 168 Lake 129 Lassen 108 Los Angeles 3547 Madera 247 Marin 207 Mariposa 109 Mendocino 357 Merced 528 Modoc 87 Mono 49 Monterey 377 Napa 158 Nevada 135 Orange 1164 Placer 337 Plumas 165 Riverside 1117 Sacramento 740 San Benito 76 San Bernardino 1422 San Diego 1632 San Francisco 143 San Joaquin 644 San Luis Obispo 401 San Mateo 361 Santa Barbara 418 Santa Clara 964 Santa Cruz 192 Shasta 492 Sierra 65 Siskiyou 421 Solano 373 Sonoma 609 Stanislaus 386 Sutter 121 Tehama 450 Trinity 194 Tulare 589 Tuolumne 125 Ventura 501 Yolo 271 Yuba 127

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.

AR

Arkansas

5.43% top marginal rate
Structure
Progressive
Burden @ $100K
$12,974

WA

Washington

5.45% top marginal rate
Structure
Progressive
Burden @ $100K
$8,474
Selected

CA

California

5.91% top marginal rate
Structure
Progressive
Burden @ $100K
$25,848

NJ

New Jersey

6.01% top marginal rate
Structure
Progressive
Burden @ $100K
$6,827

MS

Mississippi

6.03% top marginal rate
Structure
Progressive
Burden @ $100K
$16,739

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.

OLD COTTONWOOD CR

Poor

Over: COTTONWOOD CREEK

0.2 MI E/O COTTONWOOD CK, Siskiyou, CA

Built 1957 Load: 0.0 t ADT: 10

STATE ROUTE 211

Poor

Over: EEL RIVER

01-HUM-211-78.10, Humboldt, CA

Built 1911 Load: 0.0 t ADT: 5,300

CR 305 (MAPES RD)

Poor

Over: HARTSON SLOUGH

0.4 MI E/O RD 303, Lassen, CA

Built 1978 Load: 0.0 t ADT: 100

CR 111 (PITTVILLE)

Poor

Over: BEAVER CREEK

1.0 MI S OF CR 404, Lassen, CA

Built 1975 Load: 0.0 t ADT: 100

RD 424 (BASSETT)

Poor

Over: WILLOW CREEK

1.5 MI N OF RD A-2, Lassen, CA

Built 1960 Load: 0.0 t ADT: 120

CR417 (PUNKIN CTR)

Poor

Over: MUDDY SLOUGH NO 1

2.8 MI S OF CR A2, Lassen, CA

Built 1955 Load: 0.0 t ADT: 200

All Bridges in California

CALICO ROAD

Fair

Over: INTERSTATE 15

08-SBD-015-R84.64, San Bernardino, CA

Built 1963 Load: 33.4 t ADT: 185

STATE ROUTE 111 NB

Fair

Over: SNOW CREEK

08-RIV-111-R60.00R, Riverside, CA

Built 1965 Load: 33.4 t ADT: 16,000

INTERSTATE 10 EB

Fair

Over: BURIED MOUNTAIN WASH

08-RIV-010-R78.54, Riverside, CA

Built 1965 Load: 33.4 t ADT: 11,250

AIRPORT BOULEVARD

Fair

Over: COACHELLA CANAL

0.1 MI. E/O BUCHANAN ST, Riverside, CA

Built 1994 Load: 33.4 t ADT: 1,053

CALIFORNIA ST

Fair

Over: INTERSTATE 5

11-SD-005-R51.85-OCN, San Diego, CA

Built 1971 Load: 33.4 t ADT: 8,400

S163-S5 CONNECTOR

Fair

Over: PERSHING DR

11-SD-163-0.60L-SD, San Diego, CA

Built 1963 Load: 33.4 t ADT: 17,000

INTERSTATE 5

Fair

Over: BATIQUITOS LAGOON

11-SD-005-R44.56-CBD, San Diego, CA

Built 1965 Load: 33.4 t ADT: 98,500

INTERSTATE 5

Fair

Over: BATIQUITOS LAGOON

11-SD-005-R44.56-CBD, San Diego, CA

Built 1965 Load: 33.4 t ADT: 98,500

INTERSTATE 15

Fair

Over: MTDB LRT SDIVRR IMPERIAL

11-SD-015-1.49-SD, San Diego, CA

Built 1951 Load: 33.4 t ADT: 138,000

INTERSTATE 8 WB

Fair

Over: IN KO PAH UC

11-SD-008-R77.58, San Diego, CA

Built 1967 Load: 33.4 t ADT: 7,350

INTERSTATE 8 EB

Fair

Over: IN KO PAH UC

11-SD-008-R77.61, San Diego, CA

Built 1967 Load: 33.4 t ADT: 7,350

INTERSTATE 15 SB

Fair

Over: EL NORTE PARKWAY

11-SD-015-R32.86-ESD, San Diego, CA

Built 1977 Load: 33.4 t ADT: 62,500

E78-S15 CONNECTOR

Fair

Over: MISSION AVE

11-SD-078-R16.49-ESD, San Diego, CA

Built 1977 Load: 33.4 t ADT: 54,000

E8-SEVERIN DR OFF

Fair

Over: LA MESA BLVD

11-SD-008-12.12-LMSA, San Diego, CA

Built 1989 Load: 33.4 t ADT: 6,200

23S16

Fair

Over: 23S16/SOUTH CREEK

NO DATA ENTERED, Tulare, CA

Built 1973 Load: 33.4 t ADT: 35

Kloke Road

Fair

Over: All-American Canal

Within City of Calexico, Imperial, CA

Built 1965 Load: 33.5 t ADT: 1,800

HEMBREE LANE

Fair

Over: POOL CREEK

0.4 MI N SHILO RD, Sonoma, CA

Built 1962 Load: 33.5 t ADT: 8,100

U.S. HIGHWAY 101

Fair

Over: CORTE MADERA CR & SFD BL

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

Built 1957 Load: 33.5 t ADT: 172,000

WARDLOW RD-S405

Fair

Over: I 710 & CONNECTOR RAMPS

07-LA-405-7.57-LBCH, Los Angeles, CA

Built 1961 Load: 33.5 t ADT: 11,400

INTERSTATE 10

Fair

Over: ROBERTSON BL NATIONAL BL

07-LA-010-R7.92-LA, Los Angeles, CA

Built 1964 Load: 33.5 t ADT: 268,000

COLD SPRINGS CAMPG

Fair

Over: EAST FORK KAWEAH RIVER

23.6 MI. EAST OF JCT. HWY, Tulare, CA

Built 1957 Load: 33.6 t ADT: 20

CHILNUALNA FALLS R

Fair

Over: CHILNUALNA CREEK

Vicinity of Wawona. Proc, Mariposa, CA

Built 1996 Load: 33.6 t ADT: 25

STATE ROUTE 96

Fair

Over: KLAMATH RIVER

01-HUM-096-22.95, Humboldt, CA

Built 1949 Load: 33.7 t ADT: 710

STATE ROUTE 299

Fair

Over: BLUE LAKE BLVD

01-HUM-299-R5.45, Humboldt, CA

Built 1970 Load: 33.7 t ADT: 9,700

EAGLE CRK LOOP RD

Fair

Over: EAGLE CREEK

NEAR RAMSHORN ROAD, Trinity, CA

Built 1975 Load: 33.7 t ADT: 50

NORTH STATE ST

Fair

Over: STATE ROUTE 20

01-MEN-020-33.31, Mendocino, CA

Built 1962 Load: 33.7 t ADT: 1,943

U.S. HIGHWAY 101

Fair

Over: STANDLEY CR RD (PRIVATE)

01-MEN-101-R102.46, Mendocino, CA

Built 1974 Load: 33.7 t ADT: 6,100

OLD RIVER ROAD

Fair

Over: CRAWFORD CREEK

13.3 MI N/W FROM US 101, Mendocino, CA

Built 1948 Load: 33.7 t ADT: 777

NORTH STATE ST

Fair

Over: FORSYTHE CREEK

1.0 MI N HWY 20 E, Mendocino, CA

Built 1949 Load: 33.7 t ADT: 20,200

STATE ROUTE 70

Fair

Over: DUDLEY CREEK

03-BUT-070-18.50, Butte, CA

Built 1963 Load: 33.7 t ADT: 20,700

HAMILTON RD

Fair

Over: BIGGS EXTENSION CANAL

1.4 MI E/O RICETON HWY, Butte, CA

Built 1940 Load: 33.7 t ADT: 70

CROW CITY ROAD

Fair

Over: NORTH FORK YUBA RIVER

JUST SOUTH OF ROUTE 49, Sierra, CA

Built 1963 Load: 33.7 t ADT: 50

WOLF CREEK ROAD

Fair

Over: WOLF CREEK

IN SPRING VALLEY LAKE DEV, Lake, CA

Built 1967 Load: 33.7 t ADT: 220

STATE ROUTE 16

Fair

Over: BEAR CREEK

03-COL-016-R3.35, Colusa, CA

Built 1964 Load: 33.7 t ADT: 630

OLD DOBBINS ROAD

Fair

Over: DOBBINS CREEK

AT TEXAS HILL RD, Yuba, CA

Built 1921 Load: 33.7 t ADT: 530

MOONEY FLAT ROAD

Fair

Over: DEER CREEK

1.5 MI NORTH OF ROUTE 20, Nevada, CA

Built 1956 Load: 33.7 t ADT: 606

US HIGHWAY 101

Fair

Over: COLLEGE AVENUE

04-SON-101-20.74-SRO, Sonoma, CA

Built 2009 Load: 33.7 t ADT: 136,500

ST HELENA ROAD

Fair

Over: MARK WEST CREEK

1.1 MI E CALISTOGA RD, Sonoma, CA

Built 1976 Load: 33.7 t ADT: 2,100

WALLACE CREEK RD

Fair

Over: WALLACE CREEK

0.5 MI W MILL CREEK RD, Sonoma, CA

Built 1974 Load: 33.7 t ADT: 130

CR #25

Fair

Over: WINTERS CANAL

0.24 MI E/O CR #87, Yolo, CA

Built 1955 Load: 33.7 t ADT: 176

VACA VALLEY PKWY

Fair

Over: INTERSTATE 505

04-SOL-505-R1.45-VAC, Solano, CA

Built 1974 Load: 33.7 t ADT: 3,530

GREENBACK LN

Fair

Over: INTERSTATE 80

03-SAC-080-14.45, Sacramento, CA

Built 1973 Load: 33.7 t ADT: 100,000

59TH ST

Fair

Over: U.S. HIGHWAY 50

03-SAC-050-R2.13-SAC, Sacramento, CA

Built 1971 Load: 33.7 t ADT: 14,000

MARSH CREEK RD

Fair

Over: MARSH CREEK

6.8 MI E MORGAN TERRITORY, Contra Costa, CA

Built 1981 Load: 33.7 t ADT: 3,979

INTERSTATE 5 SB

Fair

Over: W HAMMER LANE

10-SJ-005-32.66-STKN, San Joaquin, CA

Built 1970 Load: 33.7 t ADT: 48,000

INTERSTATE 5 NB

Fair

Over: W HAMMER LANE

10-SJ-005-32.66-STKN, San Joaquin, CA

Built 1970 Load: 33.7 t ADT: 48,000

EIGHT MILE ROAD

Fair

Over: BISHOP CANAL

W OF RIO BLANCO RD, San Joaquin, CA

Built 1989 Load: 33.7 t ADT: 1,000

EL DORADO STREET

Fair

Over: FRENCH CAMP SLOUGH

0.3 MI N FRENCH CAMP RD, San Joaquin, CA

Built 1958 Load: 33.7 t ADT: 4,924

AURORA STREET

Fair

Over: MORMON SLOUGH

0.35 MI N CHARTER WAY, San Joaquin, CA

Built 1957 Load: 33.7 t ADT: 2,978

SANTA PAULA WAY

Fair

Over: MOSHER SLOUGH

JUST N MACDUFF AVE, San Joaquin, CA

Built 1972 Load: 33.7 t ADT: 1,800

Showing 9,451-9,500 of 25,848 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.

What to do with this

Use California's inventory picture to drill to a county or a specific span.

  • Browse counties in California and open the highest-Poor shares first. County list
  • See where this state sits among peers on Poor-condition share. State rankings
  • Compare this state with another jurisdiction on the same measures. State compare

NBI condition ratings are inventory snapshots, not live crossing-safety verdicts.

Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. California Good/Fair/Poor shares and county rollups on this page are computed from the same NBI extract as the national boards; no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2024 NBI release. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.