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

N&S110-N101 CONNEC

Fair

Over: BEAUDRY AVE

07-LA-110-23.75-LA, Los Angeles, CA

Built 1949 Load: 37.9 t ADT: 69,401

SHARP AV-S5 ON RMP

Fair

Over: S5-S170 CONNECTOR RAMP

07-LA-005-36.34-LA, Los Angeles, CA

Built 1963 Load: 37.9 t ADT: 4,601

INTERSTATE 605

Fair

Over: BEXLEY DR

07-LA-605-R13.18-SFSP, Los Angeles, CA

Built 1965 Load: 37.9 t ADT: 264,000

I 5 SB

Fair

Over: SMOKEY BEAR ROAD

07-LA-005-R77.96, Los Angeles, CA

Built 1967 Load: 37.9 t ADT: 35,890

STATE ROUTE 57

Fair

Over: SAN DIMAS AVENUE

07-LA-057-R9.82-SDMS, Los Angeles, CA

Built 1971 Load: 37.9 t ADT: 143,300

INTERSTATE 210 EB

Fair

Over: CRAIG AVE

07-LA-210-R27.81-PAS, Los Angeles, CA

Built 1976 Load: 37.9 t ADT: 147,000

STATE ROUTE 210

Fair

Over: SAN DIMAS AVENUE

07-LA-210-R45.46-SDMS, Los Angeles, CA

Built 1970 Load: 37.9 t ADT: 179,000

SAN FRCSQUTO CA RD

Fair

Over: SAN FRANCISQUITO CYN CRK

9.7MI N/O BOUQUET CYN RD, Los Angeles, CA

Built 1944 Load: 37.9 t ADT: 1

SAN FRCSQUTO CN RD

Fair

Over: SAN FRANCISQUITO CYN CRK

1MI S/O WAT POW PENSTKS, Los Angeles, CA

Built 1944 Load: 37.9 t ADT: 4,458

QUEENS HWY S

Fair

Over: HARBOR PLAZA

0.7MI W/O PICO AVE, Los Angeles, CA

Built 1969 Load: 37.9 t ADT: 2,142

INTERSTATE 40

Fair

Over: "L" STREET

08-SBD-040-R142.20-NED, San Bernardino, CA

Built 1973 Load: 37.9 t ADT: 7,350

SLEEPY HOLLOW

Fair

Over: SILVERADO CREEK

300 FT S/O SILVERADO RD., Orange, CA

Built 1972 Load: 37.9 t ADT: 100

INTERSTATE 10 WB

Fair

Over: 44TH AVENUE

08-RIV-010-R56.57-IND, Riverside, CA

Built 1972 Load: 37.9 t ADT: 28,500

SPRING ST SB

Fair

Over: INTERSTATE 8

11-SD-008-10.97-LMSA, San Diego, CA

Built 1962 Load: 37.9 t ADT: 39,100

INTERSTATE 905 WB

Fair

Over: BEYER BLVD

11-SD-905-3.82-SD, San Diego, CA

Built 1976 Load: 37.9 t ADT: 19,500

STATE ROUTE 52

Fair

Over: CUYAMACA STREET

11-SD-052-16.28, San Diego, CA

Built 2011 Load: 37.9 t ADT: 82,000

E54-S125 CONNECTOR

Fair

Over: SWEETWATER ROAD

11-SD-054-6.10, San Diego, CA

Built 2008 Load: 37.9 t ADT: 6,000

MARKET ST

Fair

Over: CHOLLAS CREEK

450 FT W/O SR15, San Diego, CA

Built 1952 Load: 37.9 t ADT: 21,000

HARRIS ROAD

Fair

Over: ALAMO RIVER

1.8 MI E/O MCCONNELL RD, Imperial, CA

Built 1970 Load: 37.9 t ADT: 320

INTERSTATE 405

Fair

Over: RINALDI STREET

07-LA-405-47.75-LA, Los Angeles, CA

Built 1963 Load: 38.1 t ADT: 142,000

COTTONWOOD CR RD

Fair

Over: DITCH CREEK

0.25 MI N/O DITCH CRK RD, Siskiyou, CA

Built 1968 Load: 38.2 t ADT: 95

CLEAR CR RD

Fair

Over: CLEAR CREEK

6.8 MI E OF S.R. 273, Shasta, CA

Built 1956 Load: 38.2 t ADT: 1,164

JOHNSTONVILLE RD

Fair

Over: SUSAN RIVER

0.3 MI N OF US 395, Lassen, CA

Built 1921 Load: 38.2 t ADT: 600

MANTON RD

Fair

Over: PAYNES CREEK

0.1 MI N OF SH 36, Tehama, CA

Built 1949 Load: 38.2 t ADT: 600

MERIDIAN RD

Fair

Over: MUD CREEK

1.28 MI W OF SACTO AVE, Butte, CA

Built 1962 Load: 38.2 t ADT: 433

STATE ROUTE 29

Fair

Over: COYOTE CREEK

01-LAK-029-11.89, Lake, CA

Built 1948 Load: 38.2 t ADT: 9,000

PIERSON ST

Fair

Over: SANTA ROSA CREEK

0.2 MI N/O WEST 3RD ST, Sonoma, CA

Built 1960 Load: 38.2 t ADT: 500

STWRT PT-SKGG SPRG

Fair

Over: HILLSIDE

2.77 MI E OF ST HWY 1, Sonoma, CA

Built 2015 Load: 38.2 t ADT: 200

STWRT PT-SKGG SPRG

Fair

Over: HILLSIDE

2.8 MI E OF ST HWY 1, Sonoma, CA

Built 2015 Load: 38.2 t ADT: 200

INTERSTATE 505 NB

Fair

Over: INTERSTATE 5

03-YOL-505-R22.33, Yolo, CA

Built 1968 Load: 38.2 t ADT: 14,000

INTERSTATE 5 SB

Fair

Over: YOLO SHORTLINE RR & MAIN

03-YOL-005-R6.51, Yolo, CA

Built 1973 Load: 38.2 t ADT: 22,000

INTERSTATE 5 SB

Fair

Over: SAN JUAN ROAD

03-SAC-005-26.91-SAC, Sacramento, CA

Built 1968 Load: 38.2 t ADT: 69,000

INTERSTATE 5 NB

Fair

Over: SAN JUAN ROAD

03-SAC-005-26.91-SAC, Sacramento, CA

Built 1968 Load: 38.2 t ADT: 69,000

DE LONG AVENUE

Fair

Over: U.S. HIGHWAY 101

04-MRN-101-R21.11-NVTO, Marin, CA

Built 1974 Load: 38.2 t ADT: 30,160

STATE ROUTE 24

Fair

Over: EBMUD AQUEDUCT BROWN AV

04-CC-024-R6.78-LFYT, Contra Costa, CA

Built 1970 Load: 38.2 t ADT: 79,500

LOUISE AVE

Fair

Over: STATE ROUTE 99

10-SJ-099-7.93-MTCA, San Joaquin, CA

Built 1955 Load: 38.2 t ADT: 6,551

E&W4-S5 CONNECTOR

Fair

Over: CHURCH STREET

10-SJ-004-R16.00-STKN, San Joaquin, CA

Built 1972 Load: 38.2 t ADT: 19,400

LARAMIE ST

Fair

Over: MARKLEEVILLE CREEK

E/O MONTGOMERY ST, Alpine, CA

Built 1958 Load: 38.2 t ADT: 200

INTERSTATE 580

Fair

Over: 164TH AVENUE

04-ALA-580-R31.71, Alameda, CA

Built 1965 Load: 38.2 t ADT: 79,000

STATE ROUTE 1

Fair

Over: CLARINADA AVENUE

04-SM-001-R47.27-DLC, San Mateo, CA

Built 1968 Load: 38.2 t ADT: 65,000

SAN MATEO AVE

Fair

Over: COLMA CREEK

.1 MI W/O AIRPORT BLVD, San Mateo, CA

Built 1960 Load: 38.2 t ADT: 9,343

S1-E152 CONNECTOR

Fair

Over: STATE ROUTE 1

05-SCR-001-R2.68-WAT, Santa Cruz, CA

Built 1967 Load: 38.2 t ADT: 9,500

SB INTERSTATE 280

Fair

Over: EL MONTE ROAD

04-SCL-280-15.05-LAH, Santa Clara, CA

Built 1967 Load: 38.2 t ADT: 58,500

MORSE AVE

Fair

Over: CENTRAL EXPRESSWAY

CENTRAL EXPRESSWAY, Santa Clara, CA

Built 1970 Load: 38.2 t ADT: 2,750

LEIGH AVE

Fair

Over: LOS GATOS CREEK

N OF HAMILTON AVE, Santa Clara, CA

Built 1965 Load: 38.2 t ADT: 15,000

SANTA FE DRIVE

Fair

Over: MERCED RIVER

0.5 MI S EL CAPITAN WAY, Merced, CA

Built 1970 Load: 38.2 t ADT: 7,297

SHAW AVENUE

Fair

Over: STATE ROUTE 99

06-FRE-099-28.10-FRE, Fresno, CA

Built 1960 Load: 38.2 t ADT: 32,444

S41-VAN NESS OFF-R

Fair

Over: M ST-S41 ON-RAMP M ST

06-FRE-041-R22.77-FRE, Fresno, CA

Built 1974 Load: 38.2 t ADT: 4,950

WATER ISLAND PK DR

Fair

Over: HERNDON CANAL

0.2 MI N OF SHAW AVE, Fresno, CA

Built 1960 Load: 38.2 t ADT: 5,881

WHITESBRIDGE ROAD

Fair

Over: DRY CREEK CANAL

0.15 MI E/O HUGHES-WEST, Fresno, CA

Built 1919 Load: 38.2 t ADT: 10,400

Showing 10,501-10,550 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.