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

S405-N710/710 SEP

Fair

Over: ROUTE 710 & CONNECTORS

07-LA-405-7.66-LBCH, Los Angeles, CA

Built 1961 Load: 47.1 t ADT: 25,000

INTERSTATE 10

Fair

Over: HAUSER BLVD

07-LA-010-R9.74-LA, Los Angeles, CA

Built 1964 Load: 47.1 t ADT: 265,000

BRANFORD ST

Fair

Over: PACOIMA WASH DIV CHANNEL

0.1 MI S ARLELA AVE, Los Angeles, CA

Built 1954 Load: 47.1 t ADT: 16,188

INTERSTATE 5 SB

Fair

Over: SISKIYOU WAY

02-SIS-005-R18.71-WEED, Siskiyou, CA

Built 1973 Load: 47.3 t ADT: 7,150

CARIBOU ROAD

Fair

Over: RAYS GULCH

4.7 MI S/O CECILVILLE RD, Siskiyou, CA

Built 1982 Load: 47.3 t ADT: 29

TRINITY MTN RD

Fair

Over: FRENCH GULCH

FRENCH GULCH RD, Shasta, CA

Built 1922 Load: 47.3 t ADT: 742

ST LOUIS RD

Fair

Over: SLATE CREEK

AT PLUMAS CO LINE, Plumas, CA

Built 1990 Load: 47.3 t ADT: 50

EL MONTE AVE

Fair

Over: DEAD HORSE SLOUGH

0.1 MI N SR 32, Butte, CA

Built 1979 Load: 47.3 t ADT: 628

INTERSTATE 80 EB

Fair

Over: W CAPITOL AVE

03-YOL-080-R10.16-WSAC, Yolo, CA

Built 1969 Load: 47.3 t ADT: 33,000

W4-W80 CONNECTOR

Fair

Over: STATE ROUTE 4

04-CC-004-0.20-HER, Contra Costa, CA

Built 1958 Load: 47.3 t ADT: 12,500

E4-E80 CONNECTOR

Fair

Over: STATE ROUTE 4

04-CC-004-L0.15-HER, Contra Costa, CA

Built 1958 Load: 47.3 t ADT: 920

STATE ROUTE 99 SB

Fair

Over: O STREET

10-MER-099-15.15-MER, Merced, CA

Built 1962 Load: 47.3 t ADT: 25,500

EXCELSIOR AVE

Fair

Over: CRESCENT DITCH

0.7 MI E WEST LAWN AVE, Fresno, CA

Built 1975 Load: 47.3 t ADT: 100

STATE ROUTE 156

Fair

Over: TEQUISQUITA SLOUGH

05-SBT-156-R15.43, San Benito, CA

Built 1966 Load: 47.3 t ADT: 12,100

KOENIGSTEIN ROAD

Fair

Over: SISAR CREEK

0.01 MI N OF STATE RT 150, Ventura, CA

Built 1965 Load: 47.3 t ADT: 150

STATE ROUTE 118

Fair

Over: SR 27(TOPANGA CANYON BL)

07-LA-118-R1.78-LA, Los Angeles, CA

Built 1968 Load: 47.3 t ADT: 155,000

CARSON ST

Fair

Over: SAN GABRIEL RIV

0.5MI W/O I-605 FWY, Los Angeles, CA

Built 1971 Load: 47.3 t ADT: 34,632

STATE ROUTE 38

Fair

Over: MILL CREEK

08-SBD-038-9.60, San Bernardino, CA

Built 1947 Load: 47.3 t ADT: 5,000

STATE ROUTE 125

Fair

Over: GROSSMONT BLVD

11-SD-125-R15.09-LMSA, San Diego, CA

Built 1990 Load: 47.3 t ADT: 79,500

EL CAMINO REAL

Fair

Over: STATE ROUTE 78

11-SD-078-1.50-OCN, San Diego, CA

Built 1966 Load: 47.3 t ADT: 30,500

LEMON GROVE AVENUE

Fair

Over: SR 94 & W94-LEMON GROVE

11-SD-094-9.04-LMGR, San Diego, CA

Built 1976 Load: 47.3 t ADT: 2,230

STATE ROUTE 94 EB

Fair

Over: SPRING STREET

11-SD-094-R10.39R, San Diego, CA

Built 1976 Load: 47.3 t ADT: 46,500

22S82

Fair

Over: 22S82/NOBE YOUNG CREEK

NO DATA ENTERED, Tulare, CA

Built 1958 Load: 47.3 t ADT: 174

INTERSTATE 5 NB

Fair

Over: HUTTON CREEK

02-SIS-005-R64.82R, Siskiyou, CA

Built 1974 Load: 47.6 t ADT: 15,300

W BIGS-GRIDLY RD

Fair

Over: HAMILTON SLOUGH

0.4 MI S OF B ST, Butte, CA

Built 1950 Load: 47.6 t ADT: 800

FOREST AVE

Fair

Over: LITTLE CHICO CREEK

JUST S OF HUMBOLDT RD, Butte, CA

Built 1981 Load: 47.6 t ADT: 14,600

E12-N&S101 CONNCTR

Fair

Over: OLIVE STREET

04-SON-012-R15.70-SRO, Sonoma, CA

Built 1964 Load: 47.6 t ADT: 47,400

C.R. 21A

Fair

Over: WINTERS CANAL

0.17 MI E/O RD. 85B, Yolo, CA

Built 2006 Load: 47.6 t ADT: 1,050

SUTTERVILLE ROAD

Fair

Over: INTERSTATE 5

03-SAC-005-20.53-SAC, Sacramento, CA

Built 1974 Load: 47.6 t ADT: 42,000

W24-TELEGRAPH OFF

Fair

Over: CLAREMONT AVE

04-ALA-024-R3.38-OAK, Alameda, CA

Built 1970 Load: 47.6 t ADT: 5,609

JOHN DALY BLVD

Fair

Over: INTERSTATE 280 SR 1

04-SM-280-M27.17L-DLC, San Mateo, CA

Built 1965 Load: 47.6 t ADT: 29,660

ORTIGALITA ROAD

Fair

Over: OUTSIDE CANAL

0.9 MI S/O PIONEER RD, Merced, CA

Built 1966 Load: 47.6 t ADT: 1,150

STATE ROUTE 1 NB

Fair

Over: W156-S1 CONNECTOR RAMP

05-MON-001-R90.93, Monterey, CA

Built 1976 Load: 47.6 t ADT: 23,500

STATE ROUTE 126

Fair

Over: SESPE CREEK OVERFLOW

07-VEN-126-19.73, Ventura, CA

Built 1954 Load: 47.6 t ADT: 37,500

W10-SAN GABRIEL BL

Fair

Over: SAN GABRIEL BLVD

07-LA-010-25.84-RSMD, Los Angeles, CA

Built 1953 Load: 47.6 t ADT: 5,829

SAN FERNANDO RD

Fair

Over: I-5 SUPPLEMENTAL ROUTE

07-LA-005S-25.29-GNDL, Los Angeles, CA

Built 1957 Load: 47.6 t ADT: 14,000

INTERSTATE 405

Fair

Over: WESTERN AVENUE

07-LA-405-14.40-LA, Los Angeles, CA

Built 1962 Load: 47.6 t ADT: 265,000

INTRESTATE 405

Fair

Over: MARINE AVENUE

07-LA-405-18.63-RDOB, Los Angeles, CA

Built 1963 Load: 47.6 t ADT: 260,800

HUMBOLDT ST

Fair

Over: I 5 & CONN RAMPS

07-LA-005-20.12-LA, Los Angeles, CA

Built 1962 Load: 47.6 t ADT: 5,600

4TH ST(UPPER LEVEL

Fair

Over: FIGUEROA FLOWER RAMP

BTWN HOPE ST & HARBOR FY, Los Angeles, CA

Built 1956 Load: 47.6 t ADT: 25,796

CARSON ST

Fair

Over: SAN GABRIEL RIV

0.5MI W/O I-605 FWY, Los Angeles, CA

Built 1971 Load: 47.6 t ADT: 34,632

CENTINELA AVE

Fair

Over: BALLONA CREEK

0.1MI N/O SR90 MARINA FWY, Los Angeles, CA

Built 1938 Load: 47.6 t ADT: 30,000

DEVONSHIRE ST

Fair

Over: BULL CANYON CREEK

0.2 MI W WOODLEY AVE, Los Angeles, CA

Built 1956 Load: 47.6 t ADT: 33,000

INTERSTATE 15 SB

Fair

Over: DALE DITCH

08-SBD-015-150.30, San Bernardino, CA

Built 1961 Load: 47.6 t ADT: 18,500

INTERSTATE 15

Fair

Over: BNSF RY UP RR AMTRAK ETC

08-SBD-015-43.47-VCTV, San Bernardino, CA

Built 1958 Load: 47.6 t ADT: 69,000

FOURTH STREET

Fair

Over: CUCAMONGA CREEK CHANNEL

1.25 MI E OF RTE I-10, San Bernardino, CA

Built 1979 Load: 47.6 t ADT: 13,654

INTERSTATE 805 NB

Fair

Over: LOS PENASQUITOS CREEK

11-SD-805-28.49-SD, San Diego, CA

Built 1972 Load: 47.6 t ADT: 82,000

GENESEE AVE

Fair

Over: MTDB BNSF RY & AMTRAK

0.4 MI S/O NOBEL DR., San Diego, CA

Built 1970 Load: 47.6 t ADT: 26,800

STATE ROUTE 86 NB

Fair

Over: CAMPBELL WASH

11-IMP-086-51.88, Imperial, CA

Built 1977 Load: 47.6 t ADT: 5,600

STATE ROUTE 86 NB

Fair

Over: WILLOW WASH

11-IMP-086-R39.01, Imperial, CA

Built 1976 Load: 47.6 t ADT: 7,350

Showing 11,651-11,700 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.