San Luis Obispo County, CA

408 public highway bridges

San Luis Obispo County Bridge Snapshot

San Luis Obispo County, California contains 408 public highway bridges in the FHWA National Bridge Inventory. Roughly 33.3% are rated “Good,” 43.1% “Fair,” 4.7% “Poor,” and 4.7% are classified as structurally deficient — the federal designation for spans whose deck, superstructure, or substructure has been rated 4 or below on the 0–9 NBI scale. Structurally deficient does not mean unsafe to cross; it means the bridge is on the priority list for repair or replacement.

Inspections in CA are conducted by certified engineers from the state Department of Transportation on a 24-month cycle, and results are reported back to the FHWA each spring. The list below shows every NBI-tracked bridge in the county, sorted by inventory load rating. Use the “Sort by” controls to surface the lowest-rated spans first, and click any row for full inspection history, traffic counts, and condition trends.

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

408
Total Bridges
33.3%
Good
4.7%
Poor
4.7%
Structurally Deficient

Condition Distribution

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

All Bridges (408)

U.S. HIGHWAY 101

Good

Over: PERFUMA CREEK

05-SLO-101-25.95, San Luis Obispo, CA

Built 1948 Load: 32.4 t ADT: 56,000

STATE ROUTE 1

Good

Over: SAN LUISITO CREEK

05-SLO-001-25.71, San Luis Obispo, CA

Built 1959 Load: 32.4 t ADT: 18,700

STATE ROUTE 1

Good

Over: SAN BERNARDO CREEK

05-SLO-001-26.86, San Luis Obispo, CA

Built 1948 Load: 32.4 t ADT: 18,700

STATE ROUTE 58

Good

Over: SAN JUAN CREEK

05-SLO-058-35.49, San Luis Obispo, CA

Built 1985 Load: 32.4 t ADT: 440

U.S. HIGHWAY 101

Good

Over: WHITEHORSE DRAW

05-SLO-101-53.17, San Luis Obispo, CA

Built 1952 Load: 32.4 t ADT: 54,000

U.S. HIGHWAY 101

Good

Over: STENNER CREEK

05-SLO-101-28.70-SLO, San Luis Obispo, CA

Built 1978 Load: 32.4 t ADT: 62,000

US HIGHWAY 101 NB

Good

Over: SANTA MARGARITA CREEK

05-SLO-101-37.99, San Luis Obispo, CA

Built 1996 Load: 32.4 t ADT: 21,000

STATE ROUTE 58

Good

Over: INDIAN CREEK

05-SLO-058-17.73, San Luis Obispo, CA

Built 1953 Load: 32.4 t ADT: 925

US HIGHWAY 101 SB

Good

Over: ARROYO GRANDE CREEK

05-SLO-101-13.02-ARGD, San Luis Obispo, CA

Built 1959 Load: 32.4 t ADT: 24,000

W46-N101 CONNECTOR

Good

Over: SALINAS RIVER

05-SLO-046-29.81-PSRS, San Luis Obispo, CA

Built 1992 Load: 32.4 t ADT: 6,840

N101-E46 CONNECTOR

Good

Over: SALINAS RIVER

05-SLO-101-57.85-PSRS, San Luis Obispo, CA

Built 1992 Load: 32.4 t ADT: 7,000

STATE ROUTE 41

Good

Over: STADIUM PARK

05-SLO-041-R16.29-ATAS, San Luis Obispo, CA

Built 2000 Load: 32.4 t ADT: 7,300

STATE ROUTE 58

Good

Over: SALINAS RIVER

05-SLO-058-4.89, San Luis Obispo, CA

Built 1996 Load: 32.4 t ADT: 1,850

STATE ROUTE 1

Good

Over: OCEANSIDE BLUFF

05-SLO-001-73.00, San Luis Obispo, CA

Built 2003 Load: 32.4 t ADT: 3,000

STATE ROUTE 58

Good

Over: MIDLE FORK HUER HUERO CR

05-SLO-058-9.94, San Luis Obispo, CA

Built 2008 Load: 32.4 t ADT: 720

STATE ROUTE 46 WB

Good

Over: ESTRELLA RD,ESTRELLA RIV

05-SLO-046-R39.87, San Luis Obispo, CA

Built 2012 Load: 32.4 t ADT: 6,500

STATE ROUTE 46 EB

Good

Over: ESTRELLA RD,ESTRELLA RIV

05-SLO-046-R39.87, San Luis Obispo, CA

Built 2012 Load: 32.4 t ADT: 6,500

STATE ROUTE 1

Good

Over: ARROYO DE LOS PLAYANOS

05-SLO-001-64.62, San Luis Obispo, CA

Built 2017 Load: 32.4 t ADT: 2,200

STATE ROUTE 1

Good

Over: ARROYO DEL CORRAL

05-SLO-001-64.86, San Luis Obispo, CA

Built 2017 Load: 32.4 t ADT: 3,000

STATE ROUTE 1

Good

Over: ARROYO DEL OSO

05-SLO-001-65.65, San Luis Obispo, CA

Built 2017 Load: 32.4 t ADT: 3,000

STATE ROUTE 46 WB

Good

Over: CHOLAME CREEK

05-SLO-046-48.32, San Luis Obispo, CA

Built 2018 Load: 32.4 t ADT: 7,550

STATE ROUTE 46 EB

Good

Over: CHOLAME CREEK

05-SLO-046-48.32, San Luis Obispo, CA

Built 2018 Load: 32.4 t ADT: 7,550

US HIGHWAY 101 SB

Good

Over: SAN MARCOS CREEK

05-SLO-101-63.56, San Luis Obispo, CA

Built 2020 Load: 32.4 t ADT: 13,250

US HIGHWAY 101 NB

Good

Over: SAN MARCOS CREEK

05-SLO-101-63.57, San Luis Obispo, CA

Built 2020 Load: 32.4 t ADT: 13,250

STATE ROUTE 58

Good

Over: TROUT CREEK

05-SLO-058-3.08, San Luis Obispo, CA

Built 2021 Load: 32.4 t ADT: 2,900

STATE ROUTE 1

Good

Over: HILLSIDE

05-SLO-001-71.70, San Luis Obispo, CA

Built 2020 Load: 32.4 t ADT: 2,750

STATE ROUTE 1

Good

Over: OLD CREEK

05-SLO-001-34.46, San Luis Obispo, CA

Built 2023 Load: 32.4 t ADT: 7,300

STATE ROUTE 1

Good

Over: TORO CREEK

05-SLO-001-32.61, San Luis Obispo, CA

Built 2023 Load: 32.4 t ADT: 7,300

NIPOMO ST

Good

Over: SAN LUIS OBISPO CREEK

0.1 MI N HIGUERA ST, San Luis Obispo, CA

Built 1994 Load: 32.4 t ADT: 4,371

MILL STREET

Good

Over: UP RR & AMTRAK

NE PEPPER ST, San Luis Obispo, CA

Built 1978 Load: 32.4 t ADT: 3,276

OSO VALLEY RD

Good

Over: SAN LUIS OBISPO CREEK

0.1 MI E SR 101, San Luis Obispo, CA

Built 1987 Load: 32.4 t ADT: 19,452

HIGUERA STREET

Good

Over: SAN LUIS OBISPO CREEK

HIGUERA, OSO, COURT ST, San Luis Obispo, CA

Built 1918 Load: 32.4 t ADT: 7,907

TANK FARM RD

Good

Over: TANK FARM DITCH

AT HOLLYHOCK ROAD, San Luis Obispo, CA

Built 1988 Load: 32.4 t ADT: 8,803

ONTARIO ROAD

Good

Over: SAN LUIS OBISPO CREEK

0.3 MI N AVILA ROAD, San Luis Obispo, CA

Built 1994 Load: 32.4 t ADT: 1,620

SODA LAKE RD

Good

Over: DRAINAGE CHANNEL

1.5 MILES SOUTH OF SR 58, San Luis Obispo, CA

Built 1987 Load: 32.4 t ADT: 202

LINNE RD

Good

Over: HUER HUERO CREEK

4 MI E US101, San Luis Obispo, CA

Built 1996 Load: 32.4 t ADT: 1,568

UPPER LOS BERROS R

Good

Over: LOS BERROS CREEK

1 MI NE DANA FOOTHILL, San Luis Obispo, CA

Built 2000 Load: 32.4 t ADT: 328

CENTURY LANE

Good

Over: LOS BERROS CREEK

JEO LOS BANOS RD, San Luis Obispo, CA

Built 1996 Load: 32.4 t ADT: 250

CANET ROAD

Good

Over: CHORRO CREEK

0.3 MI SW OF SR 1, San Luis Obispo, CA

Built 2000 Load: 32.4 t ADT: 150

FOOTHILL BLVD

Good

Over: STENNER CREEK

0.1MI EAST OF SR 1, San Luis Obispo, CA

Built 2005 Load: 32.4 t ADT: 5,000

LEWIS AVE

Good

Over: ATASCADERO CREEK

0.2 MI WEST OF SR 41, San Luis Obispo, CA

Built 2007 Load: 32.4 t ADT: 500

PICACHIO ROAD

Good

Over: CAYUCOS CREEK

1.9 MI N OF CAYUCOS, San Luis Obispo, CA

Built 2007 Load: 32.4 t ADT: 100

BELLO STREET

Good

Over: PISMO CREEK

INTERSECTS FRADY LANE, San Luis Obispo, CA

Built 2022 Load: 32.4 t ADT: 1,000

MARSH STREET

Good

Over: SAN LUIS OBISPO CREEK

SANTA ROSA ST & OSOS ST, San Luis Obispo, CA

Built 2021 Load: 32.4 t ADT: 9,463

FERRASCI ROAD

Good

Over: SANTA ROSA CREEK

.1 MI E. OF S.ROSA CRK RD, San Luis Obispo, CA

Built 2011 Load: 32.4 t ADT: 150

MAIN STREET

Good

Over: SANTA ROSA CREEK

SE OF SANTA ROSA CREEK RD, San Luis Obispo, CA

Built 2014 Load: 32.4 t ADT: 3,509

BRANCH MILL ROAD

Good

Over: TAR SPRING CREEK

0.2 MI S OF HUASNA ROAD, San Luis Obispo, CA

Built 2015 Load: 32.4 t ADT: 1,240

POINSETTIA STREET

Good

Over: E FK SAN LUIS OBISPO CRK

JEO ALYSSUM CT, San Luis Obispo, CA

Built 1986 Load: 32.4 t ADT: 1,100

EAST TEFFT STREET

Good

Over: EAST BRANCH NIPOMO CREEK

AT AVOCADO AVENUE, San Luis Obispo, CA

Built 2009 Load: 32.4 t ADT: 1,000

POINSETTIA STREET

Good

Over: E FK SAN LUIS OBISPO CK

JEO ROSEMARY CT, San Luis Obispo, CA

Built 1990 Load: 32.4 t ADT: 150

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

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Data sourced from official U.S. government datasets. See our methodology for details. Retrieved and formatted by PlainBridges Editorial