Sonoma County, CA

613 public highway bridges

Sonoma County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Sonoma County, California contains 613 public highway bridges. Roughly 22.2% are rated “Good,” 60.8% “Fair,” and 6% “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.

613

Total Bridges

22.2%

Good

60.8%

Fair

6%

Poor Condition

Condition Distribution

Good

22.2% (136)

Fair

60.8% (373)

Poor

6% (37)

All Bridges (613)

Sort:

US HIGHWAY 101 SB

Over: ARATA LANE

04-SON-101-30.67, Sonoma, CA

Built 1962 ADT: 780

US HIGHWAY 101 NB

Over: ARATA LANE

04-SON-101-30.67, Sonoma, CA

Built 1962 ADT: 1,000

LIMERICK LANE

Over: US HIGHWAY 101

04-SON-101-32.79, Sonoma, CA

Built 1962 ADT: 45,500

US HIGHWAY 101 SB

Over: HEALDSBURG AVENUE

04-SON-101-33.48, Sonoma, CA

Built 1962 ADT: 1,050

US HIGHWAY 101 NB

Over: HEALDSBURG AVENUE

04-SON-101-33.48, Sonoma, CA

Built 1962 ADT: 1,000

US HIGHWAY 101 SB

Over: HEALDSBURG AV-S101 ON-RP

04-SON-101-34.55-HLBG, Sonoma, CA

Built 1960 ADT: 13,900

US HIGHWAY 101 NB

Over: HEALDSBURG AV-S101 ON-RP

04-SON-101-34.55-HLBG, Sonoma, CA

Built 1960 ADT: 16,000

US HIGHWAY 101

Over: 3RD ST, 4TH ST, & 5TH ST

04-SON-101-20.09-SRO, Sonoma, CA

Built 1968 ADT: 300

US HIGHWAY 101

Over: NINTH STREET

04-SON-101-20.48-SRO, Sonoma, CA

Built 1968 ADT: 51,500

US HIGHWAY 101

Over: DRY CREEK ROAD

04-SON-101-36.27, Sonoma, CA

Built 1960 ADT: 650

US HIGHWAY 101 SB

Over: CHIQUITA ROAD

04-SON-101-36.95, Sonoma, CA

Built 1960 ADT: 800

US HIGHWAY 101 NB

Over: CHIQUITA ROAD

04-SON-101-36.95, Sonoma, CA

Built 1960 ADT: 1,000

U.S. HIGHWAY 101

Over: WESTSIDE RD

04-SON-101-34.88, Sonoma, CA

Built 1960 ADT: 1,000

CORONA RD

Over: U.S. HIGHWAY 101

04-SON-101-6.83-PET, Sonoma, CA

Built 1955 ADT: 94,000

SANTA ROSA AV-S101

Over: U.S. HIGHWAY 101

04-SON-101-15.53, Sonoma, CA

Built 1957 ADT: 104,000

TODD ROAD

Over: U.S. HIGHWAY 101 & RAMPS

04-SON-101-16.54, Sonoma, CA

Built 1957 ADT: 92,000

BAKER AVENUE

Over: U.S. HIGHWAY 101

04-SON-101-19.00, Sonoma, CA

Built 1957 ADT: 99,000

HEARN AVENUE

Over: U.S. HIGHWAY 101 & RAMPS

04-SON-101-18.49, Sonoma, CA

Built 1957 ADT: 92,000

INDUSTRIAL DR

Over: U.S. HIGHWAY 101

04-SON-101-22.81-SRO, Sonoma, CA

Built 1962 ADT: 96,000

US HIGHWAY 101 SB

Over: WINDSOR LANE

04-SON-101-29.35, Sonoma, CA

Built 1962 ADT: 1,000

US HIGHWAY 101 NB

Over: WINDSOR LANE

04-SON-101-29.35, Sonoma, CA

Built 1962 ADT: 800

RIVER ROAD

Over: U.S. HIGHWAY 101

04-SON-101-24.86, Sonoma, CA

Built 1962 ADT: 68,000

FULTON ROAD

Over: U.S. HIGHWAY 101

04-SON-101-25.90, Sonoma, CA

Built 1962 ADT: 62,000

SHILOH ROAD

Over: U.S. HIGHWAY 101

04-SON-101-27.62, Sonoma, CA

Built 1962 ADT: 62,000

S101-W12 CONNECTOR

Over: OLIVE STREET

04-SON-101-19.82-SRO, Sonoma, CA

Built 1964 ADT: 2,030

SR 12 WB

Over: S101-E12 CONNECTOR RAMP

04-SON-012-R15.90-SRO, Sonoma, CA

Built 1964 ADT: 60,000

SR 12 EB

Over: S101-E12 CONNECTOR RAMP

04-SON-012-R15.90-SRO, Sonoma, CA

Built 1964 ADT: 50,250

E12-N101 CONNECTOR

Over: SR 12 & US 101

04-SON-012-R15.99-SRO, Sonoma, CA

Built 1964 ADT: 10,900

SR 12 WB

Over: US 101 & CONNECTOR RAMPS

04-SON-012-R16.01-SRO, Sonoma, CA

Built 1964 ADT: 7,150

SR 12 EB

Over: US 101 & CONNECTOR RAMPS

04-SON-012-R16.01-SRO, Sonoma, CA

Built 1964 ADT: 7,150

PEDESTRIAN WALKWAY

Over: U.S. HIGHWAY 101 & RAMPS

04-SON-101-19.54-SRO, Sonoma, CA

Built 1963 ADT: 93,100

ROHNERT PARK EXPWY

Over: U.S. HIGHWAY 101 & RAMPS

04-SON-101-13.88-RNPK, Sonoma, CA

Built 1973 ADT: 92,000

US HIGHWAY 101 SB

Over: GEYSERVILLE AVE

04-SON-101-R41.43, Sonoma, CA

Built 1975 ADT: 1,100

US HIGHWAY 101 NB

Over: GEYSERVILLE AVE

04-SON-101-R41.43, Sonoma, CA

Built 1975 ADT: 1,100

US HIGHWAY 101 SB

Over: ST RTE 128 (CANYON RD)

04-SON-101-R43.36, Sonoma, CA

Built 1975 ADT: 2,650

US HIGHWAY 101 NB

Over: ST RTE 128 (CANYON RD)

04-SON-101-R43.36, Sonoma, CA

Built 1975 ADT: 2,650

CAULFIELD LANE

Over: U.S. HIGHWAY 101

04-SON-101-3.98-PET, Sonoma, CA

Built 1974 ADT: 86,000

E WASHINGTON ST

Over: US HIGHWAY 101

04-SON-101-4.76-PET, Sonoma, CA

Built 1975 ADT: 86,000

PEDESTRIAN WALKWAY

Over: US HIGHWAY 101

04-SON-101-4.55-PET, Sonoma, CA

Built 1971 ADT: 86,000

S CLOVERDALE BLVD

Over: US HIGHWAY 101

04-SON-101-R50.43, Sonoma, CA

Built 1991 ADT: 17,200

US HIGHWAY 101 SB

Over: FIRST ST & CLOVERDALE CR

04-SON-101-R52.06-CLVD, Sonoma, CA

Built 1994 ADT: 680

US HIGHWAY 101 NB

Over: FIRST ST & CLOVERDALE CR

04-SON-101-R52.06-CLVD, Sonoma, CA

Built 1994 ADT: 1,020

BICENTENNIAL WAY

Over: U.S. HIGHWAY 101

04-SON-101-22.52-SRO, Sonoma, CA

Built 1979 ADT: 96,000

U.S. HIGHWAY 101

Over: SR 128 (MCCRAY ROAD)

04-SON-101-R54.21, Sonoma, CA

Built 1989 ADT: 2,650

SR 12 WB

Over: SOUTH E STREET

04-SON-012-R16.65-SRO, Sonoma, CA

Built 1990 ADT: 8,900

SR 12 EB

Over: SOUTH E STREET

04-SON-012-R16.65-SRO, Sonoma, CA

Built 1990 ADT: 8,900

SR 12 WB

Over: BROOKWOOD AVE

04-SON-012-R16.80-SRO, Sonoma, CA

Built 1990 ADT: 6,375

STATE ROUTE 12 EB

Over: BROOKWOOD AVE

04-SON-012-R16.80-SRO, Sonoma, CA

Built 1990 ADT: 6,375

STONY POINT RD

Over: STATE ROUTE 12

04-SON-012-R14.45-SRO, Sonoma, CA

Built 1993 ADT: 61,000

HOEN AV-W12 ON RMP

Over: ST RTE 12 - FARMERS LANE

04-SON-012-T17.60, Sonoma, CA

Built 2003 ADT: 40,750

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

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