San Luis Obispo County, CA

408 public highway bridges

San Luis Obispo County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, San Luis Obispo County, California contains 408 public highway bridges. Roughly 33.3% are rated “Good,” 43.1% “Fair,” and 4.7% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.

Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.

Source: FHWA National Bridge Inventory. See methodology for full definitions.

408
Total Bridges
33.3%
Good
43.1%
Fair
4.7%
Poor Condition

Condition Distribution

Good
33.3% (136)
Fair
43.1% (176)
Poor
4.7% (19)

All Bridges (408)

W41-S1 CONNECTOR

Fair

Over: MORRO CREEK

05-SLO-041-0.01-MOBY, San Luis Obispo, CA

Built 1962 Load: 28.8 t ADT: 4,400

HIGUERA ST

Fair

Over: SAN LUIS OBISPO CREEK

AT SR 101, San Luis Obispo, CA

Built 1928 Load: 28.8 t ADT: 4,927

MADONNA RD

Fair

Over: SAN LUIS OBISPO CREEK

ADJACENT TO CALTRANS YD, San Luis Obispo, CA

Built 1963 Load: 28.8 t ADT: 30,400

STENNER CREEK RD

Fair

Over: STENNER CREEK

1.25 MI N SR 1, San Luis Obispo, CA

Built 1970 Load: 29.2 t ADT: 150

CENTRE STREET

Fair

Over: SAN JUAN CREEK

160 FT E/O 5TH STREET, San Luis Obispo, CA

Built 1941 Load: 29.2 t ADT: 750

STATE ROUTE 1

Fair

Over: VILLA CREEK

05-SLO-001-15.27-PBCH, San Luis Obispo, CA

Built 1947 Load: 29.5 t ADT: 9,500

SAN GABRIEL RD

Fair

Over: ATASCADERO CREEK

N OF W LINDO AVE, San Luis Obispo, CA

Built 1969 Load: 29.5 t ADT: 800

JESPERSEN RD

Fair

Over: E BR SAN LUIS OBISPO CRK

0.2 MI S BUCKEY RD, San Luis Obispo, CA

Built 1959 Load: 29.5 t ADT: 80

STATE PARK RD

Fair

Over: SAN SIMEON CREEK TRIB

100' E/O RTE 1 PM 52.82, San Luis Obispo, CA

Built 1950 Load: 29.5 t ADT: 30

VALLEY RD

Fair

Over: LOS BERROS CRK DIV CHNL

0.4 MI N SR 1, San Luis Obispo, CA

Built 1962 Load: 29.8 t ADT: 5,167

SAN LUIS BAY DRIVE

Fair

Over: SAN LUIS OBISPO CREEK

0.15 MI E S.R. 1, San Luis Obispo, CA

Built 1964 Load: 30.5 t ADT: 7,475

NB101-PRICE ST OFF

Fair

Over: PISMO CREEK

05-SLO-101-16.40-PBCH, San Luis Obispo, CA

Built 1960 Load: 31.4 t ADT: 5,900

US HIGHWAY 101 SB

Fair

Over: PASO ROBLES CREEK

05-SLO-101-49.64, San Luis Obispo, CA

Built 1951 Load: 32.4 t ADT: 31,000

STATE ROUTE 58

Fair

Over: YERBA BUENA CREEK

05-SLO-058-1.62, San Luis Obispo, CA

Built 1954 Load: 32.4 t ADT: 7,200

STATE ROUTE 46 WB

Fair

Over: HUER HUERO CREEK

05-SLO-046-31.97, San Luis Obispo, CA

Built 1992 Load: 32.4 t ADT: 8,050

STATE ROUTE 46 EB

Fair

Over: HUER HUERO CREEK

05-SLO-046-31.97, San Luis Obispo, CA

Built 1992 Load: 32.4 t ADT: 8,050

STATE ROUTE 46

Fair

Over: SALINAS RIVER, RIVER RD

05-SLO-046-29.80-PSRS, San Luis Obispo, CA

Built 1992 Load: 32.4 t ADT: 27,100

STATE ROUTE 1

Fair

Over: SAN SIMEON CREEK

05-SLO-001-52.92, San Luis Obispo, CA

Built 1984 Load: 32.4 t ADT: 5,300

US HIGHWAY 101 SB

Fair

Over: UP RR & AMTRAK

05-SLO-101-35.60, San Luis Obispo, CA

Built 1991 Load: 32.4 t ADT: 30,000

US HIGHWAY 101 NB

Fair

Over: UP RR & AMTRAK

05-SLO-101-35.60, San Luis Obispo, CA

Built 1991 Load: 32.4 t ADT: 30,000

S101-LOS OSOS OFFR

Fair

Over: PERFUMA CREEK

05-SLO-101-25.94, San Luis Obispo, CA

Built 1962 Load: 32.4 t ADT: 6,508

STATE ROUTE 46

Fair

Over: DRY CREEK

05-SLO-046-34.14, San Luis Obispo, CA

Built 1954 Load: 32.4 t ADT: 16,100

STATE ROUTE 58

Fair

Over: FERNANDEZ CREEK

05-SLO-058-21.00, San Luis Obispo, CA

Built 1984 Load: 32.4 t ADT: 925

STATE ROUTE 58

Fair

Over: CAMMATTI CREEK

05-SLO-058-24.54, San Luis Obispo, CA

Built 1984 Load: 32.4 t ADT: 825

STATE ROUTE 58

Fair

Over: EAST FORK HUER HUERO CRK

05-SLO-058-11.78, San Luis Obispo, CA

Built 1951 Load: 32.4 t ADT: 825

STATE ROUTE 41

Fair

Over: W BRANCH HUER HUERO CRK

05-SLO-041-27.74, San Luis Obispo, CA

Built 1975 Load: 32.4 t ADT: 1,400

STATE ROUTE 41

Fair

Over: SHEDD CANYON

05-SLO-041-35.82, San Luis Obispo, CA

Built 1979 Load: 32.4 t ADT: 750

STATE ROUTE 166

Fair

Over: RED ROCK CANYON CREEK

05-SLO-166-46.84, San Luis Obispo, CA

Built 1993 Load: 32.4 t ADT: 2,900

STATE ROUTE 1

Fair

Over: PICO CREEK

05-SLO-001-54.80, San Luis Obispo, CA

Built 1997 Load: 32.4 t ADT: 5,300

US HIGHWAY 101 NB

Fair

Over: WILLOW ROAD

05-SLO-101-6.45, San Luis Obispo, CA

Built 2012 Load: 32.4 t ADT: 27,000

STATE ROUTE 46

Fair

Over: MCMILLAN CANYON CREEK

05-SLO-046-45.50, San Luis Obispo, CA

Built 2016 Load: 32.4 t ADT: 15,100

OLD STATE ROUTE 46

Fair

Over: ESTRELLA RIVER

05-SLO-046-39.97, San Luis Obispo, CA

Built 2013 Load: 32.4 t ADT: 100

STATE ROUTE 41

Fair

Over: ESTRELLA RIVER

05-SLO-041-R41.70, San Luis Obispo, CA

Built 1996 Load: 32.4 t ADT: 2,086

STATE ROUTE 41

Fair

Over: MCMILLAN CANYON CREEK

05-SLO-041-R41.96, San Luis Obispo, CA

Built 1996 Load: 32.4 t ADT: 2,086

ELKS LANE

Fair

Over: SAN LUIS OBISPO CREEK

SAN LUIS OBISPO CREEK, San Luis Obispo, CA

Built 1996 Load: 32.4 t ADT: 1,043

HI MOUNTAIN RD

Fair

Over: SAUCELITO CREEK

2.5 MI E LOPEZ CANYON RD, San Luis Obispo, CA

Built 1966 Load: 32.4 t ADT: 487

22ND STREET

Fair

Over: ARROYO GRANDE CREEK

0.2 MI SOUTH OF SR-1, San Luis Obispo, CA

Built 1985 Load: 32.4 t ADT: 663

SYCAMORE RD

Fair

Over: ATASCADERO CREEK

0.05 MI N OF S.R. 41, San Luis Obispo, CA

Built 1990 Load: 32.4 t ADT: 1,750

SAN ANDRES AVE

Fair

Over: ATASCADERO CREEK

0.25 MI W S.R. 41, San Luis Obispo, CA

Built 1993 Load: 32.4 t ADT: 2,275

FOOTHILL ROAD

Fair

Over: LAGUNA CREEK

0.3 MI N LOS OSOS VALY RD, San Luis Obispo, CA

Built 1959 Load: 32.4 t ADT: 8,654

PREFUMO CANYON RD

Fair

Over: PREFUMO CANYON CREEK

1.8 MI SW LOS OSOS VLY RD, San Luis Obispo, CA

Built 1969 Load: 32.4 t ADT: 300

RIVER RD

Fair

Over: TORO CREEK

2.4 MI N OF POSO RD, San Luis Obispo, CA

Built 1986 Load: 32.4 t ADT: 100

MONTEREY RD

Fair

Over: GRAVES CREEK

AT GRAVES CREEK RD, San Luis Obispo, CA

Built 1993 Load: 32.4 t ADT: 1,669

TORO ST

Fair

Over: SAN LUIS OBISPO CREEK

0.1 MI SE MARSH ST, San Luis Obispo, CA

Built 1989 Load: 32.4 t ADT: 1,669

UNION RD

Fair

Over: HUER HUERO CREEK

1.5 MI S OF SR 46, San Luis Obispo, CA

Built 1994 Load: 32.4 t ADT: 5,032

POZO ROAD

Fair

Over: DRY CREEK

0.3 MI W RIVER RD, San Luis Obispo, CA

Built 1941 Load: 32.4 t ADT: 787

POZO RD

Fair

Over: SALINAS RIVER

RIVER ROAD, San Luis Obispo, CA

Built 1989 Load: 32.4 t ADT: 787

13TH ST

Fair

Over: SALINAS RIVER

IN PASO ROBLES, San Luis Obispo, CA

Built 1966 Load: 32.4 t ADT: 15,000

ASH ST

Fair

Over: LITTLE CAYUCOS CREEK

D ST & E ST IN CAYUCOS, San Luis Obispo, CA

Built 1990 Load: 32.4 t ADT: 638

PRICE CANYON ROAD

Fair

Over: UP RR & AMTRAK

0.35 MI SW/O SR 227, San Luis Obispo, CA

Built 1963 Load: 32.4 t ADT: 6,003

Read our methodology - how this data is sourced, computed, and verified.

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Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges

Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.