Structure 51151000001003 · Plumas County, CA

Road 24n05 over Red Clover Creek

Carries Road 24n05 over Red Clover Creek, No Data Entered.

Overall conditionFair

Set by its lowest-rated component: Substructure at 5 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructure7/9 · Good
Substructuresets the rating5/9 · Fair
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT52 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 7/9Substructure 5/9 · sets the rating

52 ft end to end. Lengths and the car on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a girder bridge.

Built1954rebuilt 1988
Length51.8 ft15.8 m
Daily traffic501 lanes
Last inspectedSeptember 2023every 24 months

Location

StateCalifornia
CountyPlumas
LocationNo Data Entered
CarriesRoad 24n05
CrossesRed Clover Creek
Coordinates39.96800, -120.52063

Physical Characteristics

MaterialSteel
DesignGirder and Floorbeam
Total Length51.8 ft (15.8 m)
Max Span49.9 ft (15.2 m)
Deck Width15.4 ft (4.7 m)
Deck Area74.3 sq m
Main Spans1
Year Built1954 (reconstructed 1988)

Traffic

Avg Daily Traffic50
Lanes On Bridge1

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 24 months
OwnerU.S. Forest Service
Historical SignificanceHistorical significance is not determined
Scour Critical4 — Foundations need monitoring
Structure Number051151000001003

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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