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 405

Good

Over: NORDHOFF STREET

07-LA-405-44.74-LA, Los Angeles, CA

Built 1963 Load: 44.4 t ADT: 216,000

SR 170

Good

Over: ARLETA AVE & SHELDON ST

07-LA-170-R20.10-LA, Los Angeles, CA

Built 1968 Load: 44.4 t ADT: 156,000

STATE ROUTE 60

Good

Over: WORKMAN MILL ROAD

07-LA-060-11.98, Los Angeles, CA

Built 1967 Load: 44.4 t ADT: 263,000

INTERSTATE 210 WB

Good

Over: FOOTHILL BLVD

07-LA-210-R0.43-LA, Los Angeles, CA

Built 1971 Load: 44.4 t ADT: 41,000

INTERSTATE 210 WB

Good

Over: YARNELL STREET

07-LA-210-R0.84-LA, Los Angeles, CA

Built 1970 Load: 44.4 t ADT: 41,000

GOLDEN SHORE BLVD

Good

Over: SHORELINE DR

0.1MI S/O OCEAN BLVD, Los Angeles, CA

Built 1970 Load: 44.4 t ADT: 14,910

WILEY CYN RD

Good

Over: PICO CYN CHAN

1MI N/O LYONS AVE, Los Angeles, CA

Built 1971 Load: 44.4 t ADT: 19,468

PALLETT CRK RD

Good

Over: EVANS WASH

0.1MI S/O BIG PINES HWY, Los Angeles, CA

Built 1949 Load: 44.4 t ADT: 102

SAN MRTNZ GRAN CYN

Good

Over: SAN MRTNZ GRANDE CYN CRK

1.8MI N/O SR-126 HWY, Los Angeles, CA

Built 1949 Load: 44.4 t ADT: 204

CORBIN AVE

Good

Over: LIMEKILM CHANNEL

0.2 MI N NORDOFF ST, Los Angeles, CA

Built 1964 Load: 44.4 t ADT: 54,215

CULVER BLVD

Good

Over: SEPULVEDA CHANNEL

0.35 MI SW FWY405, Los Angeles, CA

Built 1951 Load: 44.4 t ADT: 19,145

URBANDALE AVE

Good

Over: BOUQUET CYN CHAN

0.3MI N/O BOUQUET CYN RD, Los Angeles, CA

Built 1966 Load: 44.4 t ADT: 4,896

Baseline Road

Good

Over: Thompson Creek

0.1 MI NORTH OF 210, Los Angeles, CA

Built 1998 Load: 44.4 t ADT: 24,624

INTERSTATE 40

Good

Over: "S" STREET CHANNNEL

08-SBD-040-R141.47-NED, San Bernardino, CA

Built 1973 Load: 44.4 t ADT: 7,350

MORENO STREET

Good

Over: SAN ANTONIO CREEK CHAN

0.25 MI E L A CO LINE, San Bernardino, CA

Built 1958 Load: 44.4 t ADT: 4,300

BASELINE ROAD

Good

Over: DEER CREEK CHANNEL

0.2 MI E HAVEN AVE, San Bernardino, CA

Built 1984 Load: 44.4 t ADT: 21,500

BASELINE ROAD

Good

Over: DEER CREEK CHANNEL

0.2 MI E HAVEN AVE, San Bernardino, CA

Built 1982 Load: 44.4 t ADT: 21,500

SR 241 SB

Good

Over: OAK CANYON WILDLIFE

12-ORA-241-34.81-ANA, Orange, CA

Built 1998 Load: 44.4 t ADT: 41,000

INTERSTATE 5

Good

Over: CAMP PENDLETON

11-SD-005-R54.39-OCN, San Diego, CA

Built 1971 Load: 44.4 t ADT: 78,000

CORONADO AVE

Good

Over: INTERSTATE 5

11-SD-005-4.04-SD, San Diego, CA

Built 1973 Load: 44.4 t ADT: 20,200

INTERSTATE 5

Good

Over: C STREET

11-SD-005-R15.25-SD, San Diego, CA

Built 1962 Load: 44.4 t ADT: 208,000

INTERSTATE 5

Good

Over: INDIA STREET

11-SD-005-R17.28-SD, San Diego, CA

Built 1962 Load: 44.4 t ADT: 189,000

INTERSTATE 5 SB

Good

Over: SORRENTO VLY CRK BNSF RY

11-SD-005-R30.44L-SD, San Diego, CA

Built 1966 Load: 44.4 t ADT: 74,000

WINDING ROAD

Good

Over: WALLACE CREEK

NO DATA ENTERED, Placer, CA

Built 1965 Load: 44.4 t ADT: 50

AUTO TOUR ROUTE

Good

Over: POWELL SLOUGH

W .2 MI ON REFUGE ROAD, Colusa, CA

Built 1991 Load: 44.5 t ADT: 25

Panoche Road

Good

Over: San Luis Canal

2 mi east of Fairfax, Fresno, CA

Built 1965 Load: 44.7 t ADT: 1,000

WITHROW RD

Good

Over: SOUTH FORK BEAR CREEK

0.9 MI SE PONDEROSA RD, Shasta, CA

Built 1978 Load: 44.7 t ADT: 80

PASKENTA RD

Good

Over: WILLOW CREEK

1.6 MI S/O DUSTY WAY, Tehama, CA

Built 1985 Load: 44.7 t ADT: 500

INTERSTATE 5 SB

Good

Over: FREEPORT BL ABANDONED RR

03-SAC-005-15.58-SAC, Sacramento, CA

Built 1975 Load: 44.7 t ADT: 46,500

STATE ROUTE 88

Good

Over: WEST FORK CARSON RIVER

10-ALP-088-16.13, Alpine, CA

Built 1963 Load: 44.7 t ADT: 3,200

ROUTE 580 EB

Good

Over: GRANT LINE ROAD

04-ALA-580-R1.48, Alameda, CA

Built 1953 Load: 44.7 t ADT: 87,500

MONTEREY BLV EB ON

Good

Over: SAN JOSE I280 RAMPS BART

04-SF-280-R2.82-SF, San Francisco, CA

Built 1964 Load: 44.7 t ADT: 7,768

S101-E126 CONNECTO

Good

Over: ROUTE 101

07-VEN-101-26.39-VEN, Ventura, CA

Built 1963 Load: 44.7 t ADT: 16,001

U.S. HIGHWAY 101

Good

Over: S101-N23 CONNECTOR RAMP

07-VEN-101-3.20-THOK, Ventura, CA

Built 1970 Load: 44.7 t ADT: 193,000

NB BELLFLOWER-N405

Good

Over: BELLFLOWER UC

07-LA-405-2.25-LBCH, Los Angeles, CA

Built 1963 Load: 44.7 t ADT: 8,500

HONOR RANCHO RD

Good

Over: ROUTE 5

07-LA-005-R56.12, Los Angeles, CA

Built 1968 Load: 44.7 t ADT: 1,647

LOWER AZUSA RD

Good

Over: EATON WASH

0.5MI E/O ROSEMEAD BLVD, Los Angeles, CA

Built 1956 Load: 44.7 t ADT: 10,609

CENTURION WAY

Good

Over: BOUQUET CYN CHAN

0.2MI NW/O BOUQUET CYN RD, Los Angeles, CA

Built 1975 Load: 44.7 t ADT: 19,902

DECORO DR

Good

Over: SAN FRANCISQUITO CRK

0.3MI W/O MCBEAN PKWY, Los Angeles, CA

Built 2003 Load: 44.7 t ADT: 13,802

LAKE DRIVE

Good

Over: LAKE GREGORY SPILLWAY

1.7 MI E RTE 138, San Bernardino, CA

Built 1972 Load: 44.7 t ADT: 6,473

STATE ROUTE 86 NB

Good

Over: SUGINO DITCH

08-RIV-086-0.66, Riverside, CA

Built 1979 Load: 44.7 t ADT: 15,300

INTERSTATE 5

Good

Over: SASSAFRAS STREET

11-SD-005-R17.77-SD, San Diego, CA

Built 1967 Load: 44.7 t ADT: 71,500

MELOLAND ROAD

Good

Over: INTERSTATE 8

11-IMP-008-R44.04, Imperial, CA

Built 1971 Load: 44.7 t ADT: 650

Canyon Road

Good

Over: San Luis Canal

2.8 MI S PIONEER ROAD, Merced, CA

Built 1968 Load: 45.0 t ADT: 260

INTERSTATE 5

Good

Over: SHASTA RIVER

02-SIS-005-R22.62, Siskiyou, CA

Built 1960 Load: 45.0 t ADT: 7,800

US HIGHWAY 101 NB

Good

Over: GANNON SLOUGH

01-HUM-101-84.70-ARC, Humboldt, CA

Built 1955 Load: 45.0 t ADT: 17,500

WEST VAN DUZEN RD

Good

Over: VAN DUZEN RIVER

8 MI N ZENIA-RUTH RD, Trinity, CA

Built 2013 Load: 45.0 t ADT: 578

MOLLER AVENUE

Good

Over: MOLLER SLOUGH

WEST OF THIRD AVE, Tehama, CA

Built 1938 Load: 45.0 t ADT: 40

ORR SPRINGS RD

Good

Over: SOUTH FORK BIG RIVER

14.8 MI W SH 101, Mendocino, CA

Built 1976 Load: 45.0 t ADT: 134

HAWN CREEK RD

Good

Over: WILLIAMS CREEK

0.5 MI S GIBSON LANE, Mendocino, CA

Built 1930 Load: 45.0 t ADT: 1,375

Showing 23,251-23,300 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.