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

STATE ROUTE 99 SB

Fair

Over: UP RR

10-STA-099-R6.41-TUR, Stanislaus, CA

Built 1973 Load: 57.7 t ADT: 36,500

N FRIANT ROAD SB

Fair

Over: LITTLE DRY CREEK

1.0 MI NORTH OF WILLOW AV, Fresno, CA

Built 1973 Load: 57.7 t ADT: 9,200

LAS POSAS RD

Fair

Over: CAMARILLO HILLS DRAIN

0.2 MI S OF US 101, Ventura, CA

Built 1975 Load: 57.7 t ADT: 27,000

MARQUARDT AVE

Fair

Over: COYOTE CR

0.2MI S/O 183RD ST, Los Angeles, CA

Built 1965 Load: 57.7 t ADT: 15,963

S5-PERSHING DR OFF

Fair

Over: I 5 CONNS ON&OFF RAMPS

11-SD-005-R15.43-SD, San Diego, CA

Built 1963 Load: 57.7 t ADT: 12,200

INTERSTATE 80

Fair

Over: REFINERY ACCESS RD

04-CC-080-11.69, Contra Costa, CA

Built 1958 Load: 58.0 t ADT: 115,000

SNELLING ROAD

Fair

Over: MAIN CANAL

2.8 MI S/O SR 59, Merced, CA

Built 1981 Load: 58.0 t ADT: 1,451

N5-N110 CONNECTOR

Fair

Over: AVENUE 26

07-LA-005-20.32-LA, Los Angeles, CA

Built 1962 Load: 58.0 t ADT: 16,830

SAN FERNANDO RD

Fair

Over: PACOIMA WASH

0.5 MI NW PAXTON ST, Los Angeles, CA

Built 1925 Load: 58.0 t ADT: 15,000

SEA CLIFF BLVD

Fair

Over: WEST MISSION BAY DRIVE

0.4MI N/O RTE I-8, San Diego, CA

Built 1972 Load: 58.0 t ADT: 6,066

ISLAND ROAD

Fair

Over: SCOTT RIVER OVERFLOW

0.1 MI W OF ISLAND RD, Siskiyou, CA

Built 1977 Load: 58.3 t ADT: 86

BLOSSOM ROAD

Fair

Over: BEAVER SLOUGH

1 MI N OF PELTIER, San Joaquin, CA

Built 1980 Load: 58.3 t ADT: 251

SB STATE ROUTE 35

Fair

Over: NB & SB RTE 1 AND RAMPS

04-SM-035-R28.66-DLC, San Mateo, CA

Built 1972 Load: 58.3 t ADT: 14,750

STATE ROUTE 165

Fair

Over: CALIFORNIA AQUEDUCT

10-MER-165-1.08, Merced, CA

Built 1966 Load: 58.3 t ADT: 1,800

E AMERICAN AVE

Fair

Over: ALTA EAST BRANCH CANAL

0.1 MI E OF CRAWFORD AVE, Fresno, CA

Built 1980 Load: 58.3 t ADT: 1,100

DIAMOND MTN RD

Fair

Over: LIGHTS CREEK

4.9 MI NE GRNVLE-BECK RD, Plumas, CA

Built 1956 Load: 58.6 t ADT: 70

TABLE MOUNTAIN BLV

Fair

Over: THERMALITO POWER CANAL

0.8 MI NW NELSON AVE, Butte, CA

Built 1965 Load: 58.6 t ADT: 3,312

STATE ROUTE 1 NB

Fair

Over: INTERSTATE 280

04-SM-001-R47.76-DLC, San Mateo, CA

Built 1967 Load: 58.6 t ADT: 32,500

ESTRELLA ROAD

Fair

Over: ESTRELLA RIVER

AT ESTRELLA RD, San Luis Obispo, CA

Built 1978 Load: 58.6 t ADT: 249

S57-S71 CONNECTOR

Fair

Over: STATE ROUTE 57 & CONNS

07-LA-057-R7.94-SDMS, Los Angeles, CA

Built 1972 Load: 58.6 t ADT: 14,300

MANTON RD

Fair

Over: SOUTH FORK BATTLE CREEK

8.1 MI N/E OF SH 36, Tehama, CA

Built 1958 Load: 59.0 t ADT: 534

SYLAR LANE

Fair

Over: COLE CREEK

0.2 MI E/O STATE STREET, Lake, CA

Built 1965 Load: 59.0 t ADT: 250

CAVITT STALLMAN RD

Fair

Over: MINERS RAVINE

0.4 MI N OLIVE RANCH RD, Placer, CA

Built 1979 Load: 59.0 t ADT: 4,239

TYRONE ROAD

Fair

Over: TYRONE GULCH CREEK

1.8 MI S/O MONTE RIO, Sonoma, CA

Built 2004 Load: 59.0 t ADT: 150

INTERSTATE 5 SB

Fair

Over: STATE ROUTE 4

10-SJ-005-26.12-STKN, San Joaquin, CA

Built 1972 Load: 59.0 t ADT: 87,500

N FAIRFAX AVE

Fair

Over: CCID MAIN CANAL

0.7 MI S OF S.R. 33, Fresno, CA

Built 1976 Load: 59.0 t ADT: 200

INTERSTATE 210 WB

Fair

Over: SUNNYSLOPE AVE

07-LA-210-R28.73-PAS, Los Angeles, CA

Built 1976 Load: 59.0 t ADT: 269,000

STATE ROUTE 111 NB

Fair

Over: BLAISDELL CANYON

08-RIV-111-58.08, Riverside, CA

Built 1948 Load: 59.0 t ADT: 9,500

INTERSTATE 10

Fair

Over: MALKI ROAD (FIELDS ROAD)

08-RIV-010-R16.54, Riverside, CA

Built 1964 Load: 59.0 t ADT: 103,000

INTERSTATE 215 SB

Fair

Over: SALT CREEK

08-RIV-215-R18.92, Riverside, CA

Built 1979 Load: 59.0 t ADT: 99,000

BURREL ROAD

Fair

Over: UPPER N FK MATTOLE RIV

0.5 MI W MATTOLE RD, Humboldt, CA

Built 1961 Load: 59.3 t ADT: 142

INDIAN CREEK ROAD

Fair

Over: INDIAN CREEK

3.3 MI W READING CRK RD, Trinity, CA

Built 1976 Load: 59.3 t ADT: 35

BRIDGE ARBOR RD

Fair

Over: ROBINSON CREEK

0.4 MI E OF SR 29, Lake, CA

Built 1925 Load: 59.3 t ADT: 65

EASTSIDE LANE

Fair

Over: WEST WALKER RIVER

0.1 MI N RTE 395 JCT, Mono, CA

Built 1952 Load: 59.3 t ADT: 826

BENZ RD

Fair

Over: BOUQUET CYN CHAN

0.1MI W/O BOUQUET CYN RD, Los Angeles, CA

Built 1978 Load: 59.3 t ADT: 1,108

COMMERCE ST

Fair

Over: 14TH STREET

0.16 MI. E/O RTE. 91 FWY., Riverside, CA

Built 1975 Load: 59.3 t ADT: 1

INTERSTATE 805 SB

Fair

Over: SWEETWATER RIVER

11-SD-805-8.66, San Diego, CA

Built 1975 Load: 59.3 t ADT: 204,000

STATE ROUTE 94 EB

Fair

Over: CAMPO ROAD-N125 ON RAMP

11-SD-094-R10.49R-LMSA, San Diego, CA

Built 1976 Load: 59.3 t ADT: 73,000

EL DORADO PKWY

Fair

Over: LOS COCHES CREEK

300 S OF HWY 8, San Diego, CA

Built 1983 Load: 59.3 t ADT: 156

COUNTY ROAD 112

Fair

Over: J CANAL

SOUTH OF STATE LINE RD, Modoc, CA

Built 1940 Load: 59.6 t ADT: 380

BOTTLE ROCK ROAD

Fair

Over: COLE CREEK

0.15 MI S OF S.R. 29, Lake, CA

Built 1971 Load: 59.6 t ADT: 1,205

SUTTON ROAD

Fair

Over: FUNKS CREEK

0.25 MI N OF LENAHAN RD, Colusa, CA

Built 1964 Load: 59.6 t ADT: 65

INTERSTATE 380

Fair

Over: CHERRY AVENUE

04-SM-380-T4.98-SBR, San Mateo, CA

Built 1971 Load: 59.6 t ADT: 122,000

BLOSSOM HILL ROAD

Fair

Over: MONTEREY ST RR ENDICOTT

0.5 MI SW OF RT101, Santa Clara, CA

Built 1974 Load: 59.6 t ADT: 29,247

STATE ROUTE 33

Fair

Over: GARZAS CREEK BYPASS

10-MER-033-24.54, Merced, CA

Built 1920 Load: 59.6 t ADT: 7,475

TEMPLE AVE

Fair

Over: PUENTE CRK

0.8MI N/O VALLEY BLVD, Los Angeles, CA

Built 1955 Load: 59.6 t ADT: 30,150

INTERSTATE 8 EB

Fair

Over: LA POSTA CR LA POSTA RD

11-SD-008-R56.78R, San Diego, CA

Built 1974 Load: 59.6 t ADT: 8,350

W10-GRAND OFF-RAMP

Fair

Over: N GARVEY AVENUE

07-LA-010-38.41-WCOV, Los Angeles, CA

Built 1975 Load: 59.8 t ADT: 3,800

EDGEWOOD ROAD

Fair

Over: SHASTA RIVER

0.1 MI W OL EDGEWOOD WEED, Siskiyou, CA

Built 1973 Load: 59.9 t ADT: 395

MIDWAY ROAD

Fair

Over: SWEENY CREEK

0.45 MI E OF I-80, Solano, CA

Built 1970 Load: 59.9 t ADT: 5,000

Showing 12,201-12,250 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.