Sierra County, CA
65 public highway bridges
Sierra County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Sierra County, California contains 65 public highway bridges. Roughly 40% are rated “Good,” 52.3% “Fair,” and 7.7% “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.
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
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.