Sierra County, CA
65 public highway bridges
Sierra County Bridge Snapshot
Sierra County, California contains 65 public highway bridges in the FHWA National Bridge Inventory. Roughly 40% are rated “Good,” 52.3% “Fair,” 7.7% “Poor,” and 7.7% 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.
Condition Distribution
All Bridges (65)
ROAD 20N06
FairOver: ROCK CREEK
NO DATA ENTERED, Sierra, CA
FDR 524-1-2
FairOver: HAYPRESS CREEK
S26 T20N R12E, Sierra, CA
FDR 39
FairOver: CHEROKEE CREEK
S6 T19N R9E, Sierra, CA
C 843
FairOver: MIDDLE FK. YUBA RIVER
S18 T19N R13E, Sierra, CA
JIM CROW ROAD
FairOver: SAN JUAN CREEK
0.8 MI FROM S.H 49, Sierra, CA
MOUNTIAN HOUSE RD
FairOver: WOODRUFF/ROCK CREEK
0.5 MI S OF S.H 49, Sierra, CA
SALMON LAKE ROAD
FairOver: SALMON CREEK
WEST OF GOLD LAKE RD, Sierra, CA
WILD PLUM ROAD
FairOver: NORTH FORK YUBA RIVER
0.7 MI EAST OF SR 49, Sierra, CA
NEVADA STREET
FairOver: NORTH FORK YUBA RIVER
SOUTH OF SR 49, Sierra, CA
PEARL STREET
FairOver: DOWNIE RIVER
DOWNIEVILLE, Sierra, CA
PLUMBAGO ROAD
FairOver: KANAKA CREEK
1.6 MI SOUTH OF ALLEGHANY, Sierra, CA
MOUNTAIN HOUSE RD
FairOver: WOODRUFF CREEK
0.5 MI S OF ROUTE 49, Sierra, CA
POST OFFICE SPUR
FairOver: GOODYEARS CREEK
0.2 MI N OF SR 49, Sierra, CA
MOUNTAIN HOUSE RD
FairOver: NORTH FORK YUBA RIVER
0.15 MI SOUTH OF SR 49, Sierra, CA
WESTSIDE RD
FairOver: MIDDLE BRANCH CARMAN CRK
5.9 MI N SR 89 & 49, Sierra, CA
PORT WINE RIDGE RD
FairOver: ROCK CREEK TRIBUTARY
0.45 MI E COUNCIL HIL RD, Sierra, CA
LEMON CANYON ROAD
FairOver: LEMON CREEK
1.4 MI E OF SR 49 NR SIE, Sierra, CA
PORT WINE RIDGE RD
FairOver: CEDAR GROVE RAVINE
0.3 MI S INTX ST LOUIS RD, Sierra, CA
PORT WINE RIDGE RD
FairOver: ROCK CREEK
0.5 MI W JCT CNCL HILL RD, Sierra, CA
PORT WINE RIDGE RD
FairOver: ROCK CREEK
10.6 MI N/E CHLNGE-LA PO, Sierra, CA
FDR 524-01
FairOver: N. YUBA RIVER
S27 T20N R12E, Sierra, CA
STATE ROUTE 49
FairOver: NORTH YUBA RIVER
03-SIE-049-R3.72, Sierra, CA
STATE ROUTE 49
FairOver: FIDDLE CREEK
03-SIE-049-4.58, Sierra, CA
STATE ROUTE 49
FairOver: HOWARD CREEK
03-SIE-049-R34.26, Sierra, CA
STATE ROUTE 89
FairOver: FLETCHER CREEK
03-SIE-089-22.70, Sierra, CA
GOODYEARS CREEK RD
FairOver: GOODYEARS CREEK
0.6 MI NORTH OF ROUTE 49, Sierra, CA
MAIN ST CR S500
FairOver: DOWNIE RIVER
IN DOWNIEVILLE, Sierra, CA
GOLD LAKE ROAD
FairOver: HOWARD CREEK
JUST NORTH OF SR 49, Sierra, CA
CROW CITY ROAD
FairOver: NORTH FORK YUBA RIVER
JUST SOUTH OF ROUTE 49, Sierra, CA
MOUNTAIN HOUSE RD
FairOver: NORTH FORK OREGON CREEK
9.9 MI SOUTH OF RTE 49, Sierra, CA
BRANDY CITY ROAD
FairOver: FIDDLE CREEK
0.4 MI NORTH OF ROUTE 49, Sierra, CA
STATE ROUTE 49
FairOver: LADIES CANYON CREEK
03-SIE-049-24.03, Sierra, CA
BRANDY CITY ROAD
FairOver: CHEROKEE CREEK
1.1 MI N INTX CR S490, Sierra, CA
LAVEZZOLA ROAD
FairOver: LAVEZZOLA CREEK
3.6 MI NORTH OF SR 49, Sierra, CA
STATE ROUTE 49
GoodOver: DOWNIE RIVER
03-SIE-049-16.75, Sierra, CA
NO DATA ENTERED
GoodOver: N. YUBA RIVER
NO DATA ENTERED, Sierra, CA
STATE ROUTE 89
GoodOver: LITTLE TRUCKEE RIVER
03-SIE-089-2.56, Sierra, CA
STATE ROUTE 89
GoodOver: TURNER CANYON
03-SIE-089-18.80, Sierra, CA
STATE ROUTE 49
GoodOver: HILLSIDE
03-SIE-049-6.55, Sierra, CA
STATE ROUTE 49
GoodOver: HILLSIDE
03-SIE-049-2.65, Sierra, CA
SR 49
GoodOver: BURIED DRAIN PIPE
03-SIE-049-44.75, Sierra, CA
STATE ROUTE 49
GoodOver: N YUBA RIVER,N SIDE CHNL
03-SIE-049-9.19, Sierra, CA
STATE ROUTE 49
GoodOver: N YUBA RIVER,N SIDE CHNL
03-SIE-049-19.54, Sierra, CA
STATE ROUTE 49
GoodOver: N YUBA RIVER,N SIDE CHNL
03-SIE-049-21.53, Sierra, CA
STATE ROUTE 49
GoodOver: N YUBA RIVER,N SIDE CHNL
03-SIE-049-24.70, Sierra, CA
HENNESS PASS ROAD
GoodOver: LITTLE TRUCKEE RIVER
3 MI EAST OF WEBBER LAKE, Sierra, CA
SIERRA BUTTE ROAD
GoodOver: REIS RAVINE
0.4 MI NORTH OF ROUTE 49, Sierra, CA
OLD FIBREBOARD RD
GoodOver: LITTLE TRUCKEE RIVER
S OF JACKSON MEADOW RD, Sierra, CA
STATE ROUTE 49
GoodOver: SIERRAVILLE CREEK
03-SIE-049-47.54, Sierra, CA
STATE ROUTE 49
GoodOver: HILLSIDE
03-SIE-049-7.38, Sierra, CA
Read our methodology — how this data is sourced, computed, and verified.
Related
| Publisher | Kiznis Studio |
| Sources | FHWA National Bridge Inventory, public U.S. government datasets |