Alpine County, CA
32 public highway bridges
Alpine County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Alpine County, California contains 32 public highway bridges. Roughly 34.4% are rated “Good,” 59.4% “Fair,” and 6.3% “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 (32)
BLUE LAKES RD
FairOver: WEST FORK CARSON RIVER
3.0 MI SOUTH OF S.H. 88, Alpine, CA
STATE ROUTE 89
FairOver: WEST FORK CARSON RIVER
10-ALP-089-21.31, Alpine, CA
STATE ROUTE 89
FairOver: EAST FORK CARSON RIVER
10-ALP-089-13.30, Alpine, CA
STATE ROUTE 88
FairOver: WEST FORK CARSON RIVER
10-ALP-088-14.70, Alpine, CA
STATE ROUTE 89
FairOver: MARKLEEVILLE CREEK
10-ALP-089-14.69, Alpine, CA
PLSNT VLY RD
FairOver: HOT SPRINGS CREEK
1.1 MI W/O MARKLEEVILLE, Alpine, CA
STATE ROUTE 88
FairOver: WEST FORK CARSON RIVER
10-ALP-088-12.46, Alpine, CA
OLD STATE ROUTE 88
FairOver: WEST FORK CARSON RIVER
10-ALP-088-16.22, Alpine, CA
STATE PARK ROAD
FairOver: HOT SPRINGS CREEK
GROVER HOT SPRINGS ST PK, Alpine, CA
STATE ROUTE 4
FairOver: EAST FORK CARSON RIVER
10-ALP-004-29.78, Alpine, CA
STATE ROUTE 88
FairOver: CAPLES LAKE SPILLWAY
10-ALP-088-0.46, Alpine, CA
STATE ROUTE 4
FairOver: PACIFIC CREEK
10-ALP-004-11.99, Alpine, CA
DIAMOND VALLEY RD
FairOver: WEST FORK CARSON RIVER
SOUTH OF SH 88, Alpine, CA
DIAMOND VALLEY RD
FairOver: INDIAN CREEK
0.8 MI E AIRPORT RD, Alpine, CA
HIGHLAND LAKE RD
FairOver: MOKELUMNE RIVER
3.3 MI S OF S.H. 4, Alpine, CA
STATE ROUTE 4
FairOver: RAYMOND MEADOW CREEK
10-ALP-004-24.47, Alpine, CA
WOLF CREEK RD
FairOver: SILVER CREEK
0.2 MI E/O SR 4, Alpine, CA
LARAMIE ST
FairOver: MARKLEEVILLE CREEK
E/O MONTGOMERY ST, Alpine, CA
STATE ROUTE 89
FairOver: WEST FORK CARSON RIVER
10-ALP-089-21.46, Alpine, CA
HORSE MEADOWS ROAD
GoodOver: WILLOW CREEK
NO DATA ENTERED, Alpine, CA
HORSE MEADOWS ROAD
GoodOver: WILLOW CREEK
NO DATA ENTERED, Alpine, CA
STATE ROUTE 4
GoodOver: NORTH FORK MOKELUMNE RIV
10-ALP-004-12.94, Alpine, CA
STATE ROUTE 4
GoodOver: SILVER CREEK
10-ALP-004-27.98, Alpine, CA
DOUGLAS WAY ROAD
GoodOver: WEST FORK CARSON RIVER
0.1 MILE NORTH OF SH 88, Alpine, CA
DIXON MINE RD
GoodOver: WOLF CREEK
4 MI SOUTHEAST OF SR4, Alpine, CA
STATE ROUTE 89
GoodOver: WILDLIFE ACCESS
10-ALP-089-R19.15, Alpine, CA
STATE ROUTE 4
GoodOver: JACKASS GULCH
10-ALP-004-R7.82, Alpine, CA
STATE ROUTE 88
GoodOver: WEST FORK CARSON RIVER
10-ALP-088-17.76, Alpine, CA
STATE ROUTE 88
GoodOver: WEST FORK CARSON RIVER
10-ALP-088-16.13, Alpine, CA
10N01
GoodOver: WOODS CREEK
NO DATA ENTERED, Alpine, CA
CRYSTAL SPRGS CAMP
PoorOver: WEST FORK CARSON RIVER
0.1 MILE SOUTH OF S.H. 88, Alpine, CA
STATE ROUTE 4
PoorOver: SILVER CREEK
10-ALP-004-26.15, Alpine, CA
Read our methodology - how this data is sourced, computed, and verified.
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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.