Nevada County, CA

135 public highway bridges

Nevada County Bridge Snapshot

Nevada County, California contains 135 public highway bridges in the FHWA National Bridge Inventory. Roughly 31.9% are rated “Good,” 31.9% “Fair,” 11.9% “Poor,” and 11.9% 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.

135

Total Bridges

31.9%

Good

11.9%

Poor

11.9%

Structurally Deficient

Condition Distribution

Good

31.9% (43)

Fair

31.9% (43)

Poor

11.9% (16)

SD

11.9% (16)

All Bridges (135)

Sort:

INTERSTATE 80 WB

Over: SR 20,UP RR,BNSF,AMTRAK

03-NEV-080-R59.44, Nevada, CA

Built 1963 ADT: 2,600

INTERSTATE 80 EB

Over: SR 20,UP RR,BNSF,AMTRAK

03-NEV-080-R59.44, Nevada, CA

Built 1963 ADT: 2,600

INTERSTATE 80

Over: STATE ROUTE 89

03-NEV-080-14.16, Nevada, CA

Built 1991 ADT: 4,900

INTERSTATE 80

Over: DONNER PASS ROAD

03-NEV-080-14.97-TRK, Nevada, CA

Built 1991 ADT: 1,500

STATE ROUTE 89

Over: INTERSTATE 80

03-NEV-089-R0.53-TRK, Nevada, CA

Built 1995 ADT: 28,000

DONNER PASS ROAD

Over: INTERSTATE 80

03-NEV-080-13.22, Nevada, CA

Built 2001 ADT: 31,000

BRUNSWICK ROAD

Over: STATE ROUTE 20

03-NEV-020-R14.80, Nevada, CA

Built 1969 ADT: 33,500

STATE ROUTE 20

Over: STATE ROUTE 49

03-NEV-020-R12.24-GVY, Nevada, CA

Built 1969 ADT: 31,000

STATE ROUTE 20

Over: SR 174 (COLFAX),AUBURN

03-NEV-020-R12.85-GVY, Nevada, CA

Built 1970 ADT: 12,000

STATE ROUTE 20

Over: BANK STREET

03-NEV-020-R13.04-GVY, Nevada, CA

Built 1969 ADT: 4,500

STATE ROUTE 20

Over: BENNETT STREET

03-NEV-020-R13.11-GVY, Nevada, CA

Built 1969 ADT: 4,500

SACRAMENTO ST

Over: STATE ROUTE 20

03-NEV-020-R16.74-NEVC, Nevada, CA

Built 1967 ADT: 16,800

BROAD ST

Over: STATE ROUTE 20

03-NEV-020-R16.99-NEVC, Nevada, CA

Built 1967 ADT: 16,800

WASHINGTON ST

Over: STATE ROUTE 20

03-NEV-020-R17.18-NEVC, Nevada, CA

Built 1967 ADT: 16,800

INTERSTATE 80 WB

Over: UP,BNSF,AMTRAK,TRUCKEE,

03-NEV-080-22.41, Nevada, CA

Built 1989 ADT: 500

INTERSTATE 80 EB

Over: UP,BNSF,AMTRAK,TRUCKEE,

03-NEV-080-22.41, Nevada, CA

Built 1989 ADT: 500

INTERSTATE 80

Over: HINTON ROAD

03-NEV-080-23.57, Nevada, CA

Built 2004 ADT: 500

INTERSTATE 80

Over: TRUCKEE RIVER

03-NEV-080-27.29, Nevada, CA

Built 2004 ADT: 500

LAKE VALLEY ROAD

Over: INTERSTATE 80

03-NEV-080-R58.84, Nevada, CA

Built 1963 ADT: 11,750

DONNER PASS RD

Over: INTERSTATE 80

03-NEV-080-R2.48L, Nevada, CA

Built 1962 ADT: 24,800

BANNER LAVA CAP RD

Over: STATE ROUTE 20

03-NEV-020-R15.41, Nevada, CA

Built 1967 ADT: 33,500

STATE ROUTE 20

Over: IDAHO-MARYLAND ROAD

03-NEV-020-R13.61-GVY, Nevada, CA

Built 1969 ADT: 11,000

IDAHO-MARYLAND-E20

Over: IDAHO-MARYLAND ROAD

03-NEV-020-R13.61-GVY, Nevada, CA

Built 1969 ADT: 11,000

S. AUBURN STREET

Over: STATE ROUTE 49

03-NEV-049-R13.66-GVY, Nevada, CA

Built 1969 ADT: 31,000

DORSEY DR

Over: STATE ROUTE 20

03-NEV-020-R14.26, Nevada, CA

Built 1969 ADT: 36,500

GOLD FLAT ROAD

Over: STATE ROUTE 20

03-NEV-020-R15.92, Nevada, CA

Built 1967 ADT: 33,500

STATE ROUTE 20

Over: MILL STREET

03-NEV-020-R12.16-GVY, Nevada, CA

Built 1969 ADT: 7,200

BRIGHTON ST

Over: STATE ROUTE 20

03-NEV-020-R11.83-GVY, Nevada, CA

Built 1984 ADT: 8,200

SOUTH PONDEROSA WY

Over: STATE ROUTE 20

03-NEV-020-R10.09, Nevada, CA

Built 1984 ADT: 16,500

STATE ROUTE 267

Over: GLENSHIRE, RR, TRK RIVER

03-NEV-267-M0.39-TRK, Nevada, CA

Built 2003 ADT: 5,667

INTERSTATE 80 WB

Over: STATE ROUTE 267

03-NEV-080-16.60-TRK, Nevada, CA

Built 2002 ADT: 10,900

INTERSTATE 80 EB

Over: STATE ROUTE 267

03-NEV-080-16.60-TRK, Nevada, CA

Built 2002 ADT: 10,900

INTERSTATE 80

Over: TRUCKEE AIRPORT ROAD

03-NEV-080-18.26, Nevada, CA

Built 2004 ADT: 500

FDR 36

Over: POORMAN CREEK

S1 T17N R10E, Nevada, CA

Built 1957 ADT: 50

BLOOMFIELD RD

Over: SOUTH YUBA RIVER

1.5 MI N ROCK CREEK RD, Nevada, CA

Built 1904 Load: 8.4 t ADT: 143

DONNER PASS RD

Over: SODA SPRINGS CREEK

0.5 MI E SODA SPRINGS RD, Nevada, CA

Built 1924 Load: 15.6 t ADT: 552

E JIBBOOM ST

Over: TROUT CREEK

JUST E/O BRIDGE ST, Nevada, CA

Built 1940 Load: 16.2 t ADT: 2,600

MCCOURTNEY ROAD

Over: DRY CREEK

S/E OF S.H. 26, Nevada, CA

Built 1960 Load: 16.8 t ADT: 899

DONNER PASS RD

Over: SOUTH YUBA RIVER

.5 MI W/O SODA SPRINGS RD, Nevada, CA

Built 1924 Load: 17.2 t ADT: 1,020

DOG BAR ROAD

Over: BEAR RIVER

AT NEVADA-PLACER CO LINE, Nevada, CA

Built 1935 Load: 18.5 t ADT: 1,313

MOONEY FLAT ROAD

Over: SLACKS RAVINE

0.7 MI NORTH OF ROUTE 20, Nevada, CA

Built 1959 Load: 19.8 t ADT: 606

GRANITEVILLE RD

Over: POORMAN CREEK

0.7 MI E OF GRANITEVILLE, Nevada, CA

Built 1930 Load: 29.8 t ADT: 27

STATE ROUTE 89

Over: PROSSER CREEK

03-NEV-089-4.87, Nevada, CA

Built 1961 Load: 31.1 t ADT: 4,000

INTERSTATE 80 WB

Over: TRUCKEE RIVER

03-NEV-080-28.00, Nevada, CA

Built 1959 Load: 31.4 t ADT: 13,500

STATE ROUTE 49

Over: SOUTH YUBA RIVER

03-NEV-049-R21.86, Nevada, CA

Built 1994 Load: 32.4 t ADT: 3,850

STATE ROUTE 49

Over: MIDDLE YUBA RIVER

03-NEV-049-R32.62, Nevada, CA

Built 1994 Load: 32.4 t ADT: 1,650

INTERSTATE 80

Over: TRUCKEE RIVER

03-NEV-080-21.13, Nevada, CA

Built 2004 Load: 32.4 t ADT: 28,000

INTERSTATE 80

Over: TRUCKEE RIVER

03-NEV-080-20.84, Nevada, CA

Built 2004 Load: 32.4 t ADT: 28,000

STATE ROUTE 174

Over: WOLF CREEK

03-NEV-174-10.17-GVY, Nevada, CA

Built 1969 Load: 32.4 t ADT: 8,000

INTERSTATE 80 WB

Over: UP,BNSF,AMTRAK,TRUCKEE R

03-NEV-080-20.23, Nevada, CA

Built 1988 Load: 32.4 t ADT: 14,000

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

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