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

INTERSTATE 10 WB

Poor

Over: THOUSAND PALMS WASH

08-RIV-010-R53.80-IND, Riverside, CA

Built 1972 Load: 35.0 t ADT: 33,000

ARMOUR ROAD

Poor

Over: PHEASANT CANAL

0.5 MI N/O VARNEY RD, Sutter, CA

Built 1950 Load: 35.3 t ADT: 55

7TH AVE

Poor

Over: E BRANCH PEOPLES DITCH

0.5 MI N EXCELSIOR AVE, Kings, CA

Built 1960 Load: 35.3 t ADT: 350

RD 284

Poor

Over: TULE RIVER

0.1 MI N OF SR 190, Tulare, CA

Built 1963 Load: 35.3 t ADT: 1,500

WALNUT GROVE AVE

Poor

Over: ALHAMBRA WASH

0.8MI N/O SR-60 FWY, Los Angeles, CA

Built 1937 Load: 35.3 t ADT: 17,934

W94-N805 CONNECTOR

Poor

Over: FEDERAL BLVD

11-SD-094-4.15-SD, San Diego, CA

Built 1974 Load: 35.3 t ADT: 26,500

STATE ROUTE 47

Poor

Over: SAN PEDRO TERMINAL ISL

07-LA-047-0.86, Los Angeles, CA

Built 1963 Load: 35.4 t ADT: 58,000

BRIDGE BAY ROAD

Poor

Over: INTERSTATE 5

02-SHA-005-R27.63, Shasta, CA

Built 1968 Load: 35.6 t ADT: 880

BIG CANYON ROAD

Poor

Over: BIG CANYON CREEK

8 1/4 MI N OF SR 175, Lake, CA

Built 1930 Load: 35.6 t ADT: 304

HAHN ROAD

Poor

Over: INTERSTATE 5

03-COL-005-R10.31, Colusa, CA

Built 1967 Load: 35.6 t ADT: 500

SR 4 WB

Poor

Over: LINCOLN UP RR BNSF RY

10-SJ-004-R16.20-STKN, San Joaquin, CA

Built 1972 Load: 35.6 t ADT: 37,000

ROUTE 580 EB

Poor

Over: SAN PBLO ADLN MGNO PER

04-ALA-580-45.74-OAK, Alameda, CA

Built 1961 Load: 35.6 t ADT: 99,000

RESERVOIR ROAD

Poor

Over: M.I.D. MAIN CANAL

0.9 MI N/O SR 132, Stanislaus, CA

Built 1965 Load: 35.6 t ADT: 1,200

STATE ROUTE 33

Poor

Over: COLONY MAIN CANAL

06-FRE-033-75.95, Fresno, CA

Built 1947 Load: 35.6 t ADT: 3,025

STATE ROUTE 33

Poor

Over: HELM CANAL

06-FRE-033-72.81, Fresno, CA

Built 1947 Load: 35.6 t ADT: 3,500

LERDO HIGHWAY

Poor

Over: CALIFORNIA AQUEDUCT

6 MI WEST OF INTERSTATE 5, Kern, CA

Built 1966 Load: 35.6 t ADT: 2,492

TWISSELMAN ROAD

Poor

Over: CALIFORNIA AQUEDUCT

2.7 MI EAST HOLLOWAY ROAD, Kern, CA

Built 1965 Load: 35.6 t ADT: 800

PUENTE AVE

Poor

Over: BIG DALTON WASH

0.2MI S/O RAMONA BLVD, Los Angeles, CA

Built 1959 Load: 35.6 t ADT: 2,137

STATE ROUTE 86 SB

Poor

Over: VERDE DITCH

11-IMP-086-57.69, Imperial, CA

Built 1989 Load: 35.6 t ADT: 7,300

BIG CANYON ROAD

Poor

Over: BIG CANYON CREEK

8 MI N OF SR 175, Lake, CA

Built 1930 Load: 36.0 t ADT: 308

HUSTED ROAD

Poor

Over: INTERSTATE ROUTE 5

03-COL-005-R15.91, Colusa, CA

Built 1971 Load: 36.0 t ADT: 900

PENN VALLEY DRIVE

Poor

Over: CLEAR CREEK

0.65 MI SOUTH OF ROUTE 20, Nevada, CA

Built 1931 Load: 36.0 t ADT: 5,673

INTERSTATE 80 WB

Poor

Over: MASON STREET

04-SOL-080-R26.46-VAC, Solano, CA

Built 1952 Load: 36.0 t ADT: 70,500

REDWOOD ROAD

Poor

Over: STATE ROUTE 13

04-ALA-013-5.39-OAK, Alameda, CA

Built 1966 Load: 36.0 t ADT: 10,000

WINTON AVE

Poor

Over: INTERSTATE 880

04-ALA-880-17.60-HAY, Alameda, CA

Built 1968 Load: 36.0 t ADT: 52,800

ORANGE BLOSSOM RD

Poor

Over: STANISLAUS RIVER

0.2 MI SW INTSC RODDEN RD, Stanislaus, CA

Built 1967 Load: 36.0 t ADT: 2,416

STATE ROUTE 140

Poor

Over: SLATE GULCH

10-MPA-140-37.09, Mariposa, CA

Built 1926 Load: 36.0 t ADT: 1,400

STATE ROUTE 1 SB

Poor

Over: TORO CREEK

05-SLO-001-32.61, San Luis Obispo, CA

Built 1962 Load: 36.0 t ADT: 6,250

IRWINDALE AVE

Poor

Over: METRO / AVIENDA PADILLA

100FT S/O I-10 FWY, Los Angeles, CA

Built 1968 Load: 36.0 t ADT: 30,891

INTERSTATE 10 EB

Poor

Over: THOUSAND PALMS WASH

08-RIV-010-R53.80-IND, Riverside, CA

Built 1972 Load: 36.0 t ADT: 33,000

EL CAJON BLVD

Poor

Over: SPRING ST SDIV RR LRT

325FT E/O BALTIMORE DR., San Diego, CA

Built 1962 Load: 36.0 t ADT: 25,212

SUNSET CLIFFS BLVD

Poor

Over: SAN DIEGO RIVER

150FT N/O RTE 8, San Diego, CA

Built 1951 Load: 36.0 t ADT: 40,000

CHILDS HILL ROAD

Poor

Over: BUMMER LAKE CREEK

4.5 MI EAST OF US 101, Del Norte, CA

Built 1950 Load: 36.3 t ADT: 10

STATE ROUTE 162

Poor

Over: SACRAMENTO RIVER OVFL

03-GLE-162-81.63, Glenn, CA

Built 1911 Load: 36.3 t ADT: 1,500

CHEROKEE RD

Poor

Over: UP RR & BNSF RY

1 MI NE TBLE MTN BL, Butte, CA

Built 1963 Load: 36.3 t ADT: 775

AUTO MALL PARKWAY

Poor

Over: INTERSTATE 680

04-ALA-680-M4.02-FMT, Alameda, CA

Built 1971 Load: 36.3 t ADT: 21,534

CALVERT DR

Poor

Over: SARATOGA CREEK

LAWERENCE EXPRESSWAY, Santa Clara, CA

Built 1965 Load: 36.3 t ADT: 30,000

KNUDSEN DRIVE

Poor

Over: UP RR & GOLDEN STATE HWY

0.25 MI N OF NORRIS RD W, Kern, CA

Built 1948 Load: 36.3 t ADT: 4,000

STATE ROUTE 94

Poor

Over: 28TH STREET

11-SD-094-2.21-SD, San Diego, CA

Built 1959 Load: 36.3 t ADT: 122,000

STATE ROUTE 96

Poor

Over: WILLOW CREEK

01-HUM-096-0.24, Humboldt, CA

Built 1965 Load: 36.6 t ADT: 2,900

CHURCH LANE

Poor

Over: SAN PABLO CREEK

0.1 MI S EL PORTAL, Contra Costa, CA

Built 1955 Load: 36.6 t ADT: 12,540

MORAGA BLVD

Poor

Over: LAS TRAMPAS CREEK

0.2 MI E FIRST ST, Contra Costa, CA

Built 1937 Load: 36.6 t ADT: 2,200

INTERSTATE 5 NB

Poor

Over: MILLUX ROAD & SUNSET RR

06-KER-005-30.75, Kern, CA

Built 1967 Load: 36.6 t ADT: 17,000

FAYE RANCH RD

Poor

Over: SOUTH FORK KERN RIVER

0.6 MI N OF RTE 178, Kern, CA

Built 1970 Load: 36.6 t ADT: 210

AVE 36 OC

Poor

Over: ROUTE 2

07-LA-002-16.64-LA, Los Angeles, CA

Built 1976 Load: 36.6 t ADT: 6,300

INTERSTATE 40 WB

Poor

Over: WEST LUDLOW WASH

08-SBD-040-R49.71, San Bernardino, CA

Built 1968 Load: 36.6 t ADT: 8,250

INTERSTATE 40

Poor

Over: BLIND HILLS WASH

08-SBD-040-R100.45, San Bernardino, CA

Built 1970 Load: 36.6 t ADT: 7,500

LOS ALISOS BLVD

Poor

Over: SCRRA BNSF RY AMTRAK

0.2 MI SW/O JERONIMO RD, Orange, CA

Built 1977 Load: 36.6 t ADT: 42,100

WILBUR RD

Poor

Over: THERMALITO BAY CONNECT

0.25 MI N OF SR 162, Butte, CA

Built 1966 Load: 36.9 t ADT: 65

LONE STAR ROAD

Poor

Over: CORTINA CREEK

0.7 MI SOUTH OF MEYERS RD, Colusa, CA

Built 1968 Load: 36.9 t ADT: 2,077

Showing 25,501-25,550 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.