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

GRANT STREET

Fair

Over: POLK ST

POLK ST, Solano, CA

Built 1943 Load: 15.6 t ADT: 2,561

STATE ROUTE 160

Fair

Over: STEAMBOAT SLOUGH

03-SAC-160-19.76, Sacramento, CA

Built 1924 Load: 15.6 t ADT: 1,550

E BIDWELL ST

Fair

Over: WILLOW CREEK

0.15 MI SE CREEKSIDE DR, Sacramento, CA

Built 1930 Load: 15.6 t ADT: 10,000

AUBURN BLVD

Fair

Over: ARCADE CREEK

AT WINDING WAY, Sacramento, CA

Built 1927 Load: 15.6 t ADT: 14,000

MEISS RD

Fair

Over: DEER CREEK

0.2 MI S/E OF S.R. 16, Sacramento, CA

Built 1925 Load: 15.6 t ADT: 200

CEDAR RAVINE RD

Fair

Over: WEBER CREEK

2.8 MI N PLEASANT VALY RD, El Dorado, CA

Built 1930 Load: 15.6 t ADT: 2,313

BAYNE RD

Fair

Over: DUTCH CREEK

0.46 MI S OF MT MURPHY RD, El Dorado, CA

Built 1927 Load: 15.6 t ADT: 151

FRENCH CREEK RD

Fair

Over: FRENCH CREEK

6 MI S OF MOTHER LODE D, El Dorado, CA

Built 1915 Load: 15.6 t ADT: 1,000

ROCK CREEK RD

Fair

Over: ROCK CREEK

5.5 MI NE OF S.R. 193, El Dorado, CA

Built 1936 Load: 15.6 t ADT: 224

NICASSIO VLY RD

Fair

Over: HALLECK CREEK

1 MI N LUCAS VLY RD, Marin, CA

Built 1931 Load: 15.6 t ADT: 2,000

CREEK ROAD

Fair

Over: SAN ANSELMO CREEK

AT DOMINGA AVE, Marin, CA

Built 1929 Load: 15.6 t ADT: 255

MAIN GATE ROAD

Fair

Over: SMART RAILROAD

0.37 MI E HWY 101, Marin, CA

Built 1930 Load: 15.6 t ADT: 5,000

SAN PABLO AVE

Fair

Over: SAN PABLO CREEK

AT ROAD 20, Contra Costa, CA

Built 1926 Load: 15.6 t ADT: 20,490

INTERSTATE 5

Fair

Over: CARLTON AVE

10-SJ-005-27.66-STKN, San Joaquin, CA

Built 1970 Load: 15.6 t ADT: 56,500

BNSF WORTH SCOTTS

Fair

Over: WILSON WAY

0.2 MI S OF HAZELTON AVE, San Joaquin, CA

Built 1937 Load: 15.6 t ADT: 9,300

MILTON ROAD

Fair

Over: CHANNEL A

0.5 MI W OF FINE RD, San Joaquin, CA

Built 1927 Load: 15.6 t ADT: 301

SEXTON RD

Fair

Over: SSJID CANAL

0.2 MI N OF RIVER RD, San Joaquin, CA

Built 1941 Load: 15.6 t ADT: 210

KOSTER RD

Fair

Over: HOSPITAL CREEK OVERFLOW

0.5 MI N GAFFERY RD, San Joaquin, CA

Built 1947 Load: 15.6 t ADT: 390

BOLLEA ROAD

Fair

Over: BEAR CREEK

NEAR CALAVERAS CO LINE, San Joaquin, CA

Built 1997 Load: 15.6 t ADT: 26

UP RR BNSF RY

Fair

Over: MARTIN LUTHER KING JR BL

0.2 MI WEST OF AIRPORT WY, San Joaquin, CA

Built 1937 Load: 15.6 t ADT: 150

OLD STRWBRY RD

Fair

Over: S FK STANISLAUS RIVER

0.85 MI S/O SR 108, Tuolumne, CA

Built 1910 Load: 15.6 t ADT: 275

LIME KILN RD

Fair

Over: CURTIS CREEK

2.8 MI S/O CAMPO SECO RD, Tuolumne, CA

Built 1922 Load: 15.6 t ADT: 957

CEDAR SPRINGS RD

Fair

Over: TURNBACK CREEK

1.1 MI S TUOLUMNE RD, Tuolumne, CA

Built 1925 Load: 15.6 t ADT: 150

TREASURE ISLAND RD

Fair

Over: SIDEHILL

NE OF SHV #3, San Francisco, CA

Built 1938 Load: 15.6 t ADT: 1,500

STATE ROUTE 82

Fair

Over: CORDILLERAS CREEK

04-SM-082-5.15-RDWC, San Mateo, CA

Built 1915 Load: 15.6 t ADT: 25,000

BERNAL AVE

Fair

Over: EASTON CREEK

EAST OF EASTON DR, San Mateo, CA

Built 1936 Load: 15.6 t ADT: 300

ALPINE ROAD

Fair

Over: ALPINE CREEK

0.01 MI W OF PESCADERO RD, San Mateo, CA

Built 1920 Load: 15.6 t ADT: 91

MOUNTAIN HOME RD

Fair

Over: BEAR CREEK

0.3 MI S OF S.H. 84, San Mateo, CA

Built 1900 Load: 15.6 t ADT: 500

RAILROAD AVE

Fair

Over: SAN MATEO CREEK

SOUTH OF TILTON, San Mateo, CA

Built 1902 Load: 15.6 t ADT: 230

GAZOS CREEK ROAD

Fair

Over: HILLSIDE

0.8 MI E/O CLOVERDALE RD, San Mateo, CA

Built 1983 Load: 15.6 t ADT: 75

SEASIDE SCH RD SHV

Fair

Over: HILLSIDE

0.25 MILES W/O STAGE RD, San Mateo, CA

Built 1976 Load: 15.6 t ADT: 25

MOFFETT BOULEVARD

Fair

Over: U.S. HIGHWAY 101

04-SCL-101-47.89-MVW, Santa Clara, CA

Built 1957 Load: 15.6 t ADT: 32,000

FREMONT AVE

Fair

Over: STEVENS CREEK (FREMONT)

0.2 MI W/O SR 85, Santa Clara, CA

Built 1911 Load: 15.6 t ADT: 14,369

MCCLELLAN RD

Fair

Over: STEVENS CREEK

E STEVENS CANYON RD, Santa Clara, CA

Built 1920 Load: 15.6 t ADT: 4,509

PRUNERIDGE AVE

Fair

Over: CALABAZAS CREEK

1500 FT E OF LAWRENCE EX, Santa Clara, CA

Built 1958 Load: 15.6 t ADT: 5,000

ALDERCROFT HTS RD

Fair

Over: HOOKER CREEK

2.12 MI S LOS GATOS SC RD, Santa Clara, CA

Built 1956 Load: 15.6 t ADT: 30

STEVENS CYN RD

Fair

Over: STEVENS CREEK

1.0 MI SW/O MT EDEN RD, Santa Clara, CA

Built 1947 Load: 15.6 t ADT: 810

WHITEHURST ROAD

Fair

Over: BODFISH CREEK

0.16 MI S/O HECKER PASS R, Santa Clara, CA

Built 1939 Load: 15.6 t ADT: 70

ALUM ROCK FALLS RD

Fair

Over: PENITENCIA CREEK

0.2 MI E PENITENCIA CR RD, Santa Clara, CA

Built 1925 Load: 15.6 t ADT: 690

PETE MILLER ROAD

Fair

Over: DELTA-MENDOTA CANAL

1.7 MI W OF EASTIN ROAD, Stanislaus, CA

Built 1949 Load: 15.6 t ADT: 150

DUNTON ROAD

Fair

Over: SHIRLEY CREEK

1.6 MI E/O MILTON RD, Stanislaus, CA

Built 1935 Load: 15.6 t ADT: 37

CRABTREE ROAD

Fair

Over: M.I.D. MAIN CANAL

0.2 MI N/O SR 132, Stanislaus, CA

Built 1926 Load: 15.6 t ADT: 123

STATE ROUTE 33

Fair

Over: QUINTO BYPASS

10-MER-033-23.35, Merced, CA

Built 1920 Load: 15.6 t ADT: 7,475

EAST AVENUE

Fair

Over: MUSTANG CREEK

1.0 MI E NEWPORT RD, Merced, CA

Built 1939 Load: 15.6 t ADT: 1,308

LAKE ROAD

Fair

Over: LE GRAND CANAL

0.4 MI NE OLD LAKE ROAD, Merced, CA

Built 1930 Load: 15.6 t ADT: 101

C.R. 800

Fair

Over: MID FORK CHOWCHILLA RIV

4 MI NE OF CR 820, Madera, CA

Built 1956 Load: 15.6 t ADT: 51

S WALNUT AVE

Fair

Over: LIBERTY DITCH

0.2 MI N OF ELKHORN AVE, Fresno, CA

Built 1950 Load: 15.6 t ADT: 125

E. OLIVE AVE

Fair

Over: DRY CREEK CANAL

NEAR N. BLACKSTONE AVE, Fresno, CA

Built 1941 Load: 15.6 t ADT: 5,000

PARKFIELD/CLNG RD

Fair

Over: LITTLE CHOLAME CREEK

1 MI N VINEYARD CANYON RD, Monterey, CA

Built 1915 Load: 15.6 t ADT: 240

STATE ROUTE 245

Fair

Over: FRIANT-KERN CANAL

06-TUL-245-3.18, Tulare, CA

Built 1949 Load: 15.6 t ADT: 4,800

Showing 601-650 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.