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)

W DRY CREEK ROAD

Good

Over: PINE RIDGE CANYON

1.35 MI NW WESTSIDE RD, Sonoma, CA

Built 1928 Load: 16.8 t ADT: 750

BODEGA HIGHWAY

Good

Over: JONIVE CREEK 1

7.3 MI FROM INT W/ SR 1, Sonoma, CA

Built 1922 Load: 17.2 t ADT: 7,000

SONOMA MTN RD

Good

Over: MATANZAS CREEK

0.5 MI S BENNET VALLEY RD, Sonoma, CA

Built 1930 Load: 17.2 t ADT: 1,400

WEST DRY CREEK RD

Good

Over: GRAPE CREEK

5.38 MI NW WESTSIDE RD, Sonoma, CA

Built 1928 Load: 17.2 t ADT: 200

CALETTI AVE

Good

Over: PRUITT CREEK

200 FT S OF SHILOH ROAD, Sonoma, CA

Built 1987 Load: 17.5 t ADT: 10,000

PETALUMA BLVD N

Good

Over: PETALUMA RIVER

0.2 MI S JCT US 101, Sonoma, CA

Built 1925 Load: 18.5 t ADT: 4,200

ARNOLD DR

Good

Over: SONOMA CR (GLEN ELLEN)

LONDON RANCH RD, Sonoma, CA

Built 1939 Load: 18.8 t ADT: 6,300

STATE ROUTE 12

Good

Over: SANTA ROSA CREEK

04-SON-012-T18.51-SRO, Sonoma, CA

Built 1956 Load: 19.8 t ADT: 40,750

LEVERONI RD

Good

Over: FELDER CREEK

1.45 MI W OF SR 12, Sonoma, CA

Built 1972 Load: 19.8 t ADT: 6,000

PETALUMA BLVD

Good

Over: SAN ANTONIO CREEK

04-SON-101-0.01, Sonoma, CA

Built 1929 Load: 20.4 t ADT: 100

MANOR LANE

Good

Over: ADOBE CREEK

0.77 MI N ADOBE RD, Sonoma, CA

Built 1960 Load: 20.7 t ADT: 150

ADOBE RD

Good

Over: LICHAU CREEK

0.08 MI E OLD REDWOOD HWY, Sonoma, CA

Built 1929 Load: 20.7 t ADT: 2,900

VALLEY FORD RD

Good

Over: BLOOMFIELD CREEK

0.2 MI W BLOOMFIELD RD, Sonoma, CA

Built 1970 Load: 21.1 t ADT: 2,900

STATE ROUTE 12

Good

Over: STUART CREEK

04-SON-012-30.80, Sonoma, CA

Built 1924 Load: 21.4 t ADT: 14,200

MONTGOMERY DR

Good

Over: SANTA ROSA CREEK RSEVR

0.1 M N MONTGOMERY DR, Sonoma, CA

Built 1950 Load: 21.4 t ADT: 4,000

FULTON STREET

Good

Over: PINER CREEK

0.3 MI S GUERNEVILLE RD, Sonoma, CA

Built 1970 Load: 21.4 t ADT: 22,350

COMMERCE BLVD

Good

Over: COPELAND CREEK

0.4 MI S RNPK EXPRESSWAY, Sonoma, CA

Built 1966 Load: 21.4 t ADT: 1,000

S ELY RD

Good

Over: ADOBE CREEK

0.1 MI SE CASA GRANDE AVE, Sonoma, CA

Built 1984 Load: 21.4 t ADT: 6,145

OLD GRAVENSTEIN HY

Good

Over: BLUCHER CREEK

0.25 MI N OF S.H. 116, Sonoma, CA

Built 1925 Load: 23.0 t ADT: 1,562

BRIDGEWOOD DR

Good

Over: RINCON CREEK

0.1 MI N MTCTO BL SNTA R, Sonoma, CA

Built 1962 Load: 23.7 t ADT: 1,500

BROOKWOOD ROAD

Good

Over: SANTA ROSA CREEK

0.6 MI N OF RTE 12, Sonoma, CA

Built 1979 Load: 23.7 t ADT: 11,000

STATE ROUTE 128

Good

Over: HEADER DRAW

04-SON-128-5.26, Sonoma, CA

Built 1900 Load: 24.3 t ADT: 2,650

STATE ROUTE 116

Good

Over: BLUCHER CREEK

04-SON-116-29.83, Sonoma, CA

Built 1938 Load: 24.3 t ADT: 16,550

STATE ROUTE 116

Good

Over: GOSSAGE CREEK

04-SON-116-33.37, Sonoma, CA

Built 1936 Load: 24.3 t ADT: 16,000

STATE ROUTE 121

Good

Over: BRANCH ARROYO SECO

04-SON-121-8.51, Sonoma, CA

Built 1922 Load: 24.3 t ADT: 19,000

WB STATE ROUTE 12

Good

Over: SANTA ROSA AVE

04-SON-012-R16.26-SRO, Sonoma, CA

Built 1964 Load: 24.3 t ADT: 36,500

RIVER RD

Good

Over: GREEN VALLEY CREEK

6.5 MI INTX WITH SR 116, Sonoma, CA

Built 1970 Load: 24.3 t ADT: 12,700

RINCONADA DR

Good

Over: DUCKER CREEK

0.3 M SOUTH OF MONTECITO, Sonoma, CA

Built 1960 Load: 24.3 t ADT: 2,000

DRY CREEK RD

Good

Over: FOSS CREEK

1/4 MILE EAST OF SR 101, Sonoma, CA

Built 1962 Load: 24.3 t ADT: 17,950

COFFEY LN

Good

Over: PAULINE CREEK

COFFEY LN, Sonoma, CA

Built 1960 Load: 24.3 t ADT: 7,000

LOWELL AVE

Good

Over: GOSSAGE CREEK

0.06 MI E GILMORE AVE, Sonoma, CA

Built 1972 Load: 24.3 t ADT: 150

STONY POINT RD

Good

Over: COLGAN CR FLD CNTRL CHAN

0.1 MI N/O TODD RD, Sonoma, CA

Built 1962 Load: 24.3 t ADT: 13,600

SKILLMAN LANE

Good

Over: WILSON CREEK

EAST OF THOMPSON LANE, Sonoma, CA

Built 1960 Load: 24.3 t ADT: 1,600

SOUTH ELY ROAD

Good

Over: SOUTH ELY CREEK

0.8 MI SE FRATES RD, Sonoma, CA

Built 1961 Load: 24.3 t ADT: 200

MARKET ST

Good

Over: DUTCH BILL CREEK

JUST S BOHEMIAN HWY, Sonoma, CA

Built 1958 Load: 24.3 t ADT: 200

CAZADERO HWY

Good

Over: ST ELMO CREEK

EAST OF NEWMARK AVE, Sonoma, CA

Built 1957 Load: 24.3 t ADT: 1,550

ROBLAR RD

Good

Over: AMERICANO CREEK

0.7 MI E JCT VALY FORD RD, Sonoma, CA

Built 1964 Load: 24.3 t ADT: 1,200

STATE ROUTE 12

Good

Over: OLIVE STREET

04-SON-012-R15.70-SRO, Sonoma, CA

Built 1964 Load: 24.9 t ADT: 36,500

STATE ROUTE 12

Good

Over: OLIVE STREET

04-SON-012-R15.70-SRO, Sonoma, CA

Built 1964 Load: 24.9 t ADT: 36,500

OLD RIVER RD

Good

Over: GREEN VALLEY CREEK

0.1 MI SE/O MARTINELLI RD, Sonoma, CA

Built 1949 Load: 25.3 t ADT: 150

STATE ROUTE 116

Good

Over: RUSSIAN RIVER

04-SON-116-10.38, Sonoma, CA

Built 1941 Load: 25.6 t ADT: 8,450

WESTSIDE RD

Good

Over: PORTER CREEK

1.0 MI N WOHLER BR, Sonoma, CA

Built 1921 Load: 26.2 t ADT: 1,738

YULUPA AVE

Good

Over: MATANZAS CREEK

0.2 M SOUTH CREEKSIDE RD, Sonoma, CA

Built 1961 Load: 26.2 t ADT: 10,000

BENNETT VALLEY RD

Good

Over: MATANZAS CREEK

7.7 MI W WARM SPRINGS RD, Sonoma, CA

Built 1929 Load: 26.6 t ADT: 5,800

ARMSTRONG WOODS RD

Good

Over: REDWOOD CREEK

JUST N/O SWTWTR SPNGS RD, Sonoma, CA

Built 1959 Load: 26.6 t ADT: 3,800

MONTE VISTA TERR

Good

Over: JOHNSON GULCH

IN MONTE RIO, Sonoma, CA

Built 2001 Load: 26.6 t ADT: 200

STATE ROUTE 37

Good

Over: TOLAY CREEK

04-SON-037-4.04, Sonoma, CA

Built 1931 Load: 27.2 t ADT: 32,000

STATE ROUTE 116

Good

Over: ADOBE CREEK

04-SON-116-36.19, Sonoma, CA

Built 1954 Load: 27.5 t ADT: 34,000

STWRT PT-SKGG SPRG

Good

Over: HAUPT CREEK

6.0 MI E OF SR 1, Sonoma, CA

Built 1937 Load: 28.5 t ADT: 200

MONTE VISTA TERRAC

Good

Over: HILLSIDE

NEAR BR. 20C0403, Sonoma, CA

Built 2008 Load: 29.2 t ADT: 211

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.