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

NAT TRAILS HWY

Fair

Over: AVIS DITCH

0.1 MI E OF ESSEX RD, San Bernardino, CA

Built 1930 Load: 11.7 t ADT: 502

STATE ROUTE 96

Fair

Over: DILLON CREEK

02-SIS-096-R16.13, Siskiyou, CA

Built 1966 Load: 12.0 t ADT: 330

FAWN LODGE ROAD

Fair

Over: GRASS VALLEY CREEK

0.1 MI NORTH OF SR 299, Trinity, CA

Built 1959 Load: 12.0 t ADT: 50

RD 304 (ALEXANDER)

Fair

Over: SOUTH FORK DILL SLOUGH

1.1 MI E/O ROAD 302, Lassen, CA

Built 1930 Load: 12.0 t ADT: 100

CAMPGROUND RD

Fair

Over: JAMISON CREEK

PLUMAS-EUREKA STATE PARK, Plumas, CA

Built 1963 Load: 12.0 t ADT: 275

RANCHERIA ROAD

Fair

Over: MIDDLE CREEK

0.5 MI W ELK MOUNTAIN RD, Lake, CA

Built 1958 Load: 12.0 t ADT: 315

MOORE RD

Fair

Over: AUBURN RAVINE

0.25 MI W FIDDYMENT RD, Placer, CA

Built 1930 Load: 12.0 t ADT: 387

STOCKTON BLVD

Fair

Over: MORRISON CREEK

0.1 MI N OF FOWLER AVE, Sacramento, CA

Built 1924 Load: 12.0 t ADT: 23,306

DOGTOWN RD

Fair

Over: FRENCH GULCH

3.9 MI N/O SR 49, Calaveras, CA

Built 1940 Load: 12.0 t ADT: 84

BERTRAM ROAD

Fair

Over: ALAMITOS CREEK

NEAR ALMADEN ROAD, Santa Clara, CA

Built 1956 Load: 12.0 t ADT: 290

AVE 192

Fair

Over: LAKELAND CANAL

0.3 MI W OF RD 20, Tulare, CA

Built 1960 Load: 12.0 t ADT: 300

THE TOLEDO E

Fair

Over: RIVO ALTO CANAL

0.1MI E/O RAVENNA DR, Los Angeles, CA

Built 1967 Load: 12.0 t ADT: 1,020

THE TOLEDO W

Fair

Over: RIVO ALTO CANAL

0.2MI W/O RAVENNA DR, Los Angeles, CA

Built 1967 Load: 12.0 t ADT: 1,836

MOJAVE DRIVE EB

Fair

Over: INTERSTATE 15

08-SBD-015-42.03-VCTV, San Bernardino, CA

Built 1962 Load: 12.0 t ADT: 10,100

NAT TRAILS HWY

Fair

Over: CERULIA DITCH

2.2 MI E OF AMBOY RD, San Bernardino, CA

Built 1930 Load: 12.0 t ADT: 805

NAT TRAILS HWY

Fair

Over: ZAGA DITCH

3.2 MI E KELBAKER RD, San Bernardino, CA

Built 1930 Load: 12.0 t ADT: 502

HINKLEY RD

Fair

Over: MOJAVE RIVER

0.75 MI N/O NATL TRAILS, San Bernardino, CA

Built 1950 Load: 12.0 t ADT: 405

STATE ROUTE 96

Fair

Over: SLATE CREEK

01-HUM-096-29.92, Humboldt, CA

Built 1960 Load: 12.3 t ADT: 540

SWEDES FLAT ROAD

Fair

Over: ROCKY HONCUT CREEK

2.6 MI E BANGOR HWY, Butte, CA

Built 1925 Load: 12.3 t ADT: 234

HARDING AVENUE

Fair

Over: LATERAL #6

0.4 MI E OF MERCED AVE, Merced, CA

Built 1924 Load: 12.3 t ADT: 173

N VIAU AVE

Fair

Over: FRESNO CANAL

0.3 MI NORTH OF BELMONT, Fresno, CA

Built 1925 Load: 12.3 t ADT: 250

NAT TRAILS HWY

Fair

Over: ROCAS DITCH

13.9 MI E OF CRUCERO RD, San Bernardino, CA

Built 1930 Load: 12.3 t ADT: 235

NAT TRAILS HWY

Fair

Over: EL ROVIA DITCH

21.7 MI E OF CRUCERO RD, San Bernardino, CA

Built 1930 Load: 12.3 t ADT: 235

NAT TRAILS HWY

Fair

Over: CERRO DITCH

1.3 MI E OF AMBOY RD, San Bernardino, CA

Built 1930 Load: 12.3 t ADT: 790

NAT TRAILS HWY

Fair

Over: AVA DITCH

19.6 MI E KELBAKER RD, San Bernardino, CA

Built 1930 Load: 12.3 t ADT: 502

PASKENTA ROAD

Fair

Over: ELDER CREEK

3.4 MI S OF DUSTY RD, Tehama, CA

Built 1948 Load: 12.6 t ADT: 200

BUCKS LAKE ROAD

Fair

Over: BIG GRIZZLEY CREEK

1.7MI W BUCKS LAKE DAM RD, Plumas, CA

Built 2011 Load: 12.6 t ADT: 350

LIME CREEK RD

Fair

Over: YOUNGS CREEK

0.4 MI SW OF SR 12, Calaveras, CA

Built 1917 Load: 12.6 t ADT: 180

MERIDIAN ROAD (SB)

Fair

Over: INTERSTATE 280

04-SCL-280-R3.99, Santa Clara, CA

Built 1972 Load: 12.6 t ADT: 16,740

SKITTONE ROAD

Fair

Over: M.I.D. MAIN CANAL

0.05 MI S OF SR 108, Stanislaus, CA

Built 1952 Load: 12.6 t ADT: 244

AVE 194 (8TH AVE)

Fair

Over: FRIANT-KERN CANAL

AT ROAD 234, Tulare, CA

Built 1949 Load: 12.6 t ADT: 75

MADONNA RD

Fair

Over: PREFUMO CREEK

SLO CTY, San Luis Obispo, CA

Built 1958 Load: 12.6 t ADT: 26,985

INTERSTATE 215 NB

Fair

Over: INTERSTATE 10

08-SBD-215-4.03-COL, San Bernardino, CA

Built 1972 Load: 12.6 t ADT: 85,000

DAGGETT-YERMO RD

Fair

Over: MOJAVE RIVER

0.5 MI N OF NATL TRA HWY, San Bernardino, CA

Built 1941 Load: 12.6 t ADT: 2,919

NAT TRAILS HWY

Fair

Over: PASTEL DITCH

6.8 MI E KELBAKER RD, San Bernardino, CA

Built 1930 Load: 12.6 t ADT: 502

NAT TRAILS HWY

Fair

Over: RODILLA DITCH

13.2 MI E KELBAKER RD, San Bernardino, CA

Built 1930 Load: 12.6 t ADT: 502

NAT TRAILS HWY

Fair

Over: TARECO DITCH

19.2 MI E KELBAKER RD, San Bernardino, CA

Built 1930 Load: 12.6 t ADT: 502

ROUTE 11

Fair

Over: UPPER CLEAR CREEK

0.2 miles N of Hwy 299 (M, Shasta, CA

Built 1940 Load: 12.7 t ADT: 30

SERVICE ROAD

Fair

Over: CRYSTAL CREEK

0.1 miles S of Hwy 299 (M, Shasta, CA

Built 1940 Load: 12.7 t ADT: 50

RAILROAD PARK ROAD

Fair

Over: LITTLE CASTLE CREEK

0.1 MI W OF I-5, Siskiyou, CA

Built 1960 Load: 13.0 t ADT: 126

RAWSON ROAD

Fair

Over: WILLOW CREEK

0.05 MI N/O CHARD AVE, Tehama, CA

Built 1956 Load: 13.0 t ADT: 1,218

REYNOLDS HIGHWAY

Fair

Over: OUTLET CREEK

1.1 MI WEST OF US 101, Mendocino, CA

Built 1955 Load: 13.0 t ADT: 19

RG STATE PARK ROAD

Fair

Over: RUSSIAN GULCH

RUSSIAN GULCH STATE PARK, Mendocino, CA

Built 1960 Load: 13.0 t ADT: 45

STATE ROUTE 116

Fair

Over: JONES CREEK

04-SON-116-19.90, Sonoma, CA

Built 1921 Load: 13.0 t ADT: 12,400

INTERSTATE 5 SB

Fair

Over: YOLO BYPASS

03-YOL-005-0.84, Yolo, CA

Built 1969 Load: 13.0 t ADT: 25,500

INTERSTATE 5 NB

Fair

Over: YOLO BYPASS

03-YOL-005-0.84, Yolo, CA

Built 1969 Load: 13.0 t ADT: 25,500

ENTERPRISE CONCRSE

Fair

Over: COYOTE CREEK TRIBUTARY

.02 MI W TENNESSEE VLY RD, Marin, CA

Built 1950 Load: 13.0 t ADT: 70

WARDS FERRY RD

Fair

Over: DEER CREEK

4.95 MI N OF GROVELAND, Tuolumne, CA

Built 1915 Load: 13.0 t ADT: 120

ALAMITOS ROAD

Fair

Over: HERBERT CREEK

1.1 MI SW JCT OF HICK RD, Santa Clara, CA

Built 1956 Load: 13.0 t ADT: 10

MISSION AVENUE

Fair

Over: DUCK SLOUGH

0.5 MI E BURCHELL AVENUE, Merced, CA

Built 1941 Load: 13.0 t ADT: 20

Showing 301-350 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.