Sonoma County, CA

613 public highway bridges

Sonoma County Bridge Snapshot

Sonoma County, California contains 613 public highway bridges in the FHWA National Bridge Inventory. Roughly 22.2% are rated “Good,” 60.8% “Fair,” 6% “Poor,” and 6% 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.

613

Total Bridges

22.2%

Good

6%

Poor

6%

Structurally Deficient

Condition Distribution

Good

22.2% (136)

Fair

60.8% (373)

Poor

6% (37)

SD

6% (37)

All Bridges (613)

Sort:

ARNOLD DR

Over: FELDER CREEK

1.5 MI N OF SR 116, Sonoma, CA

Built 1967 Load: 32.4 t ADT: 16,500

WARM SPRINGS RD

Over: SONOMA CREEK

9.85 MI N OF SR 116, Sonoma, CA

Built 1960 Load: 32.4 t ADT: 3,000

OCCIDENTAL RD

Over: LAGUNA DE SANTA ROSA

1 MI EAST OF SR 116, Sonoma, CA

Built 1990 Load: 32.4 t ADT: 22,900

RIVER ROAD

Over: BIG SULPHUR CREEK

NE OF CLOVERDALE, Sonoma, CA

Built 1988 Load: 32.4 t ADT: 500

MONTGOMERY RD

Over: JONIVE CREEK

0.1 MI N BODEGA HWY, Sonoma, CA

Built 1963 Load: 32.4 t ADT: 270

LUDWIG AVE

Over: ROSELAND CR FLD CNTL CHN

1.6 MI E JCT WTH LLANO RD, Sonoma, CA

Built 1980 Load: 32.4 t ADT: 1,700

COUNTRY CLUB DR

Over: COPELAND CREEK

0.4 MI S RNPK EXPRSSWY, Sonoma, CA

Built 1973 Load: 32.4 t ADT: 7,700

LABATH AVE

Over: HINEBAUGH CREEK

0.2 MI N ROHNERT PK EXPWY, Sonoma, CA

Built 1979 Load: 32.4 t ADT: 800

STATE FARM DRIVE

Over: HINEBAUGH CREEK

0.2 MI N ROHNERT PARK EXP, Sonoma, CA

Built 1979 Load: 32.4 t ADT: 9,000

COUNTRY CLUB DRIVE

Over: HINEBAUGH CREEK

0.1 MI N ROHNERT PK EXPWY, Sonoma, CA

Built 1973 Load: 32.4 t ADT: 7,000

COUNTRY CLUB DRIVE

Over: HINEBAUGH CREEK

0.1 MI N ROHNERT PK EXPWY, Sonoma, CA

Built 1973 Load: 32.4 t ADT: 7,000

FAIRWAY DRIVE

Over: COLEMAN CREEK

0.2 MI S HOLLY, Sonoma, CA

Built 1977 Load: 32.4 t ADT: 1,000

HILLVIEW WAY

Over: COLEMAN CREEK

0.1 MI S HOLLY, Sonoma, CA

Built 1979 Load: 32.4 t ADT: 1,000

ROHNERT PARK EXPWY

Over: BELLEVUE WILFRED CREEK

0.1 MI E STONY PT RD, Sonoma, CA

Built 1990 Load: 32.4 t ADT: 8,200

ROHNERT PARK EXPWY

Over: HINEBAUGH CREEK

1/2 MI E STONY POINT RD, Sonoma, CA

Built 1990 Load: 32.4 t ADT: 8,200

THOMAS LK HARIS DR

Over: STONEFIELD ARCH

0.1 MI N FNTAINGROVE PKWY, Sonoma, CA

Built 1989 Load: 32.4 t ADT: 500

STONY POINT RD

Over: GOSSAGE CREEK

0.1 MI N/O SH 116, Sonoma, CA

Built 1994 Load: 32.4 t ADT: 10,600

CONDE LANE

Over: WINDSOR CREEK

320 FT EAST OF BELL AVE, Sonoma, CA

Built 1995 Load: 32.4 t ADT: 5,400

Old Redwood Hwy

Over: WINDSOR CREEK

100 YARDS WEST OF RTE 101, Sonoma, CA

Built 1995 Load: 32.4 t ADT: 2,000

PAYRAN ST

Over: PETALUMA RIVER

0.3 MI E/O PETALUMA BL, Sonoma, CA

Built 1997 Load: 32.4 t ADT: 7,575

CLOVERDALE BLVD

Over: CLOVERDALE CREEK

0.8 MI. N OF 1ST ST, Sonoma, CA

Built 2000 Load: 32.4 t ADT: 5,700

WALKER AVENUE

Over: COLGAN CK FLD CNTRL CHAN

0.7 MI S TODD RD, Sonoma, CA

Built 1997 Load: 32.4 t ADT: 150

LAKEVILLE STREET

Over: PETALUMA RIVER

ON LAKEVILLE STREET, Sonoma, CA

Built 1998 Load: 32.4 t ADT: 5,520

GEYSERS ROAD

Over: HILLSIDE

.75 M E OF RIVER RD, Sonoma, CA

Built 1998 Load: 32.4 t ADT: 150

GREAT HERON DRIVE

Over: SKY HAWK CREEK

INTRSX W/ MTN HAWK WAY, Sonoma, CA

Built 1995 Load: 32.4 t ADT: 900

RIVER ROAD

Over: HILLSIDE

1.6 MI E/O SR 116, Sonoma, CA

Built 2007 Load: 32.4 t ADT: 10,250

GAMAY STREET

Over: STEEL CREEK

NORTH OF JENNINGS AVE, Sonoma, CA

Built 1989 Load: 32.4 t ADT: 500

N MCDOWELL BLVD

Over: WILLOW BROOK CREEK

N OF WILLOWBROOK CT, Sonoma, CA

Built 1992 Load: 32.4 t ADT: 500

HOLLY LANE

Over: WASHINGTON CREEK

W OF MADISON STREET, Sonoma, CA

Built 1997 Load: 32.4 t ADT: 500

VIA COLUMBARD

Over: ROGERS CREEK

0.7 MI W/O ARNOLD DRIVE, Sonoma, CA

Built 1987 Load: 32.4 t ADT: 200

PORTER CREEK ROAD

Over: PORTER CREEK

7.1 MI NE MARK WEST & 101, Sonoma, CA

Built 2014 Load: 32.4 t ADT: 7,300

SHILOH ROAD

Over: PRUITT CREEK

0.1 MI EAST OF CONDE LANE, Sonoma, CA

Built 2012 Load: 32.4 t ADT: 20,000

NATALIE DRIVE

Over: WINDSOR CREEK

200 FT S OF JESSICA DRIVE, Sonoma, CA

Built 1988 Load: 32.4 t ADT: 3,000

BELL ROAD

Over: EAST WINDSOR CREEK

400 FT NW OFJOSHUA DR, Sonoma, CA

Built 2007 Load: 32.4 t ADT: 3,000

GOLF COURSE ROAD

Over: POOL CREEK

300 FT N OF 19TH HOLE DR, Sonoma, CA

Built 1997 Load: 32.4 t ADT: 3,000

CONDE LANE

Over: POOL CREEK

0.2 MI N OF SHILOH RD, Sonoma, CA

Built 2008 Load: 32.4 t ADT: 3,000

LLANO RD

Over: LAGUNA DE SANTA ROSA

0.5 MI N OF ST HWY 116, Sonoma, CA

Built 1962 Load: 32.7 t ADT: 2,500

SEXTON ROAD

Over: JONIVE CREEK

0.05 MI S BODEGA HWY, Sonoma, CA

Built 1964 Load: 32.7 t ADT: 1,210

STONY POINT RD

Over: LAGUNA DE SANTA ROSA

0.65 MI N OF LOWELL AVE, Sonoma, CA

Built 1960 Load: 33.0 t ADT: 10,300

MILL CREEK RD

Over: MILL CREEK

1.9 MI W OF WESTSIDE RD, Sonoma, CA

Built 1966 Load: 33.0 t ADT: 210

HEMBREE LANE

Over: POOL CREEK

0.4 MI N SHILO RD, Sonoma, CA

Built 1962 Load: 33.5 t ADT: 8,100

ST HELENA ROAD

Over: MARK WEST CREEK

1.1 MI E CALISTOGA RD, Sonoma, CA

Built 1976 Load: 33.7 t ADT: 2,100

WALLACE CREEK RD

Over: WALLACE CREEK

0.5 MI W MILL CREEK RD, Sonoma, CA

Built 1974 Load: 33.7 t ADT: 130

RIVER RD

Over: HOBSON CREEK

5.19 MI INTX WITH SR 116, Sonoma, CA

Built 1950 Load: 34.0 t ADT: 10,000

SONOMA MTN RD

Over: LYNCH CREEK

0.35 MI NW ADOBE RD, Sonoma, CA

Built 1984 Load: 34.0 t ADT: 475

SUMMERHOME PARK RD

Over: HILLSIDE

0.1 MI NW LAUREL RD, Sonoma, CA

Built 1930 Load: 34.0 t ADT: 50

SCOUTS CAMP RD

Over: SALMON CREEK

0.23 MI S BOHEMIAN HWY, Sonoma, CA

Built 1960 Load: 34.0 t ADT: 100

VALLEY FORD RD

Over: AMERICANO CREEK

3.6 MI E JCT SR 1, Sonoma, CA

Built 1985 Load: 34.3 t ADT: 3,000

SALMON CREEK ROAD

Over: SALMON CREEK

0.1 MI NW BODEGA HWY, Sonoma, CA

Built 1958 Load: 34.3 t ADT: 500

MILL CREEK RD

Over: MILL CREEK

3.1 MI W OF WESTSIDE RD, Sonoma, CA

Built 1957 Load: 34.3 t ADT: 600

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

Related

Browse all → | Rankings →

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

Reviewed byPlainbridges Editorial, Plain Bridges Editorial Team · June 6, 2026