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

SB INTERSTATE 280

Fair

Over: PAGE MILL ROAD

04-SCL-280-18.38, Santa Clara, CA

Built 1969 Load: 41.8 t ADT: 58,500

NB INTERSTATE 280

Fair

Over: PAGE MILL ROAD

04-SCL-280-18.38, Santa Clara, CA

Built 1969 Load: 41.8 t ADT: 58,500

BAILEY AVE

Fair

Over: FISHER CREEK

0.35 MI SW SNTA TERESA B, Santa Clara, CA

Built 1947 Load: 41.8 t ADT: 5,536

ARQUES AVE

Fair

Over: CENTRAL EXPRESSWAY

CENTRAL EXPRESSWAY, Santa Clara, CA

Built 1970 Load: 41.8 t ADT: 24,360

N HOWARD AVE

Fair

Over: HERNDON CANAL

AT SHAW AVE, Fresno, CA

Built 1935 Load: 41.8 t ADT: 500

HARE CANYON ROAD

Fair

Over: BIG SANDY CREEK

AT INDIAN VALLEY RD, Monterey, CA

Built 1964 Load: 41.8 t ADT: 60

OLIVE AVENUE

Fair

Over: SOUTH TAFT CREEK

0.08 MI N CRYSTAL STREET, Kern, CA

Built 1963 Load: 41.8 t ADT: 510

ROSEDALE HWY

Fair

Over: KERN RIVER

0.2 MI EAST RTE 99, Kern, CA

Built 1963 Load: 41.8 t ADT: 26,000

GLENDALE AVE

Fair

Over: STATE ROUTE 134 & RAMPS

07-LA-134-R7.87-GNDL, Los Angeles, CA

Built 1968 Load: 41.8 t ADT: 39,400

S405-W90 CONNECTOR

Fair

Over: SLAUSON AVE

07-LA-405-26.10-CLC, Los Angeles, CA

Built 1968 Load: 41.8 t ADT: 6,200

SR 2

Fair

Over: ROUND TOP DR

07-LA-002-R17.78-LA, Los Angeles, CA

Built 1976 Load: 41.8 t ADT: 143,000

CITRUS AVE

Fair

Over: SAN DIMAS WASH

0.3MI S/O ARROW HWY, Los Angeles, CA

Built 1959 Load: 41.8 t ADT: 21,867

DEL AMO BLVD

Fair

Over: COMPTON CRK

0.3MI W/O I-710 FWY, Los Angeles, CA

Built 1954 Load: 41.8 t ADT: 38,658

HOLLENBECK AVE

Fair

Over: SAN DIMAS WASH

0.4MI S/O ARROW HWY, Los Angeles, CA

Built 1959 Load: 41.8 t ADT: 13,366

ORCHARD VILLAGE RD

Fair

Over: SANTA CLARA RIV SF

1.0MI N/O LYONS AVE, Los Angeles, CA

Built 1970 Load: 41.8 t ADT: 24,066

7TH ST ON RAMP

Fair

Over: RTD PARKING LOT UC

0.4MI W/O MAGNOLIA AVE, Los Angeles, CA

Built 1956 Load: 41.8 t ADT: 13,081

AGUA DULCE CYN RD

Fair

Over: AGUA DULCE CR

1.0MI S/O SR-14 FWY, Los Angeles, CA

Built 1954 Load: 41.8 t ADT: 189

LOST CYN RD

Fair

Over: SAND CYN WASH

150FT W/O SAND CYN, Los Angeles, CA

Built 1960 Load: 41.8 t ADT: 3,100

MAIN ST

Fair

Over: DOMINGUEZ CHAN

0.1MI N/O I-405 FWY, Los Angeles, CA

Built 1961 Load: 41.8 t ADT: 16,200

VALYERMO RD

Fair

Over: CALIFORNIA AQUEDUCT

2.5MI S/O SR-138 HWY, Los Angeles, CA

Built 1969 Load: 41.8 t ADT: 1,020

BALBOA BLVD

Fair

Over: METROLINK UP RR SAN FERN

AT SAN FERNANDO RD, Los Angeles, CA

Built 1971 Load: 41.8 t ADT: 23,500

GRAND AVE

Fair

Over: SAN JOSE CRK

0.3MI S/O VALLEY BLVD, Los Angeles, CA

Built 1991 Load: 41.8 t ADT: 19,798

ENGLE DRIVEWAY

Fair

Over: ACTA

0.2MI N/O FIRESTONE BLVD, Los Angeles, CA

Built 2000 Load: 41.8 t ADT: 306

ALONDRA BLVD

Fair

Over: ACTA

25FT E/O ALAMEDA ST, Los Angeles, CA

Built 1999 Load: 41.8 t ADT: 17,956

DEL AMO

Fair

Over: RAILROAD

0.4 ML E/O PRAIRIE AVE, Los Angeles, CA

Built 2013 Load: 41.8 t ADT: 10,000

CITRUS AVENUE

Fair

Over: STATE ROUTE 210

08-SBD-210-13.93-FNA, San Bernardino, CA

Built 2001 Load: 41.8 t ADT: 14,500

SAN TIMOTEO CYN RD

Fair

Over: SAN TIMOTEO CREEK

0.1 MI S BROOKSIDE RD, San Bernardino, CA

Built 1970 Load: 41.8 t ADT: 12,000

STATE ROUTE 55

Fair

Over: DYER RD

12-ORA-055-R7.87-SA, Orange, CA

Built 1966 Load: 41.8 t ADT: 236,000

N5-19TH ST OFF-RMP

Fair

Over: 19TH STREET-N5 ON-RAMP

11-SD-005-R14.64-SD, San Diego, CA

Built 1963 Load: 41.8 t ADT: 10,400

INTERSTATE 15

Fair

Over: SAN DIEGO RIVER

11-SD-015-R6.26-SD, San Diego, CA

Built 1960 Load: 41.8 t ADT: 244,000

WB52&NB5-LA JOLLA

Fair

Over: MTDB BNSF AMTRAK I 5 CON

11-SD-052-0.19-SD, San Diego, CA

Built 1966 Load: 41.8 t ADT: 18,200

S5-E8 CONNECTOR RP

Fair

Over: UP RR AMTRAK I 5 I 8 WB

11-SD-005-R20.08-SD, San Diego, CA

Built 1969 Load: 41.8 t ADT: 23,500

INTERSTATE 805 SB

Fair

Over: OTAY RIVER

11-SD-805-3.34-SD, San Diego, CA

Built 1975 Load: 41.8 t ADT: 101,000

INTERSTATE 805 NB

Fair

Over: OTAY RIVER

11-SD-805-3.34-SD, San Diego, CA

Built 1975 Load: 41.8 t ADT: 101,000

SPACE THEATER WAY

Fair

Over: PEPPER CANYON

450 FT W/O PARK BLVD, San Diego, CA

Built 1972 Load: 41.8 t ADT: 1,200

U.S. HIGHWAY 101

Fair

Over: STRONGS CREEK

01-HUM-101-59.94, Humboldt, CA

Built 1962 Load: 42.1 t ADT: 13,000

S QUARRY ROAD

Fair

Over: JACOBY CREEK

0.05 MI S JACOBY CREEK RD, Humboldt, CA

Built 1971 Load: 42.1 t ADT: 115

STATE ROUTE 299

Fair

Over: GRASS VALLEY CREEK

02-TRI-299-65.45, Trinity, CA

Built 1963 Load: 42.1 t ADT: 3,500

STATE ROUTE 299

Fair

Over: HAT CREEK

02-SHA-299-84.02, Shasta, CA

Built 1933 Load: 42.1 t ADT: 3,200

DERSCH ROAD

Fair

Over: COW CREEK

0.7 MI E DESCHUTES RD, Shasta, CA

Built 1965 Load: 42.1 t ADT: 2,158

SOUTH COW CREEK RD

Fair

Over: CLOUGH GULCH

2.7 MI NE OF SR44, Shasta, CA

Built 1975 Load: 42.1 t ADT: 90

NORTH BUSH STREET

Fair

Over: ORRS CREEK

0.2 MI S OF LOW GAP RD, Mendocino, CA

Built 1972 Load: 42.1 t ADT: 4,692

STATE ROUTE 49

Fair

Over: LADIES CANYON CREEK

03-SIE-049-24.03, Sierra, CA

Built 1932 Load: 42.1 t ADT: 600

STATE ROUTE 29

Fair

Over: ADOBE CREEK

01-LAK-029-R37.57, Lake, CA

Built 1966 Load: 42.1 t ADT: 12,100

BARTLETT SPRNGS RD

Fair

Over: COMPLEXION CREEK

28 MI E OF SR 20, Lake, CA

Built 1960 Load: 42.1 t ADT: 103

DANLEY ROAD

Fair

Over: LURLINE CREEK

AT LURLINE RD, Colusa, CA

Built 1974 Load: 42.1 t ADT: 152

INTERSTATE 505

Fair

Over: LONG CREEK

03-YOL-505-13.67, Yolo, CA

Built 1977 Load: 42.1 t ADT: 6,500

INTERSTATE 505

Fair

Over: LONG CREEK

03-YOL-505-13.66, Yolo, CA

Built 1977 Load: 42.1 t ADT: 6,500

INTERSTATE 5 SB

Fair

Over: MOSHER SLOUGH

10-SJ-005-33.50, San Joaquin, CA

Built 1975 Load: 42.1 t ADT: 48,000

W PORTAL BLDG BRDG

Fair

Over: STATE ROUTE 24 WB

04-ALA-024-R5.89-OAK, Alameda, CA

Built 1964 Load: 42.1 t ADT: 25

Showing 11,101-11,150 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.