Structure 51754000001028 · Placer County, CA

Fdr 96 over N.fk. Of Mid.fk.american

Carries Fdr 96 over N.fk. Of Mid.fk.american, S26 T14n R11e.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT493 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

493 ft end to end: about 7 semi-trucks nose to tail. Lengths and the semi-truck 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 deck truss.

Built194680 years old
Length493.1 ft150.3 m
Daily traffic502 lanes
Last inspectedSeptember 2024every 24 months

Location

StateCalifornia
CountyPlacer
LocationS26 T14n R11e
CarriesFdr 96
CrossesN.fk. Of Mid.fk.american
Coordinates39.02418, -120.72068

Physical Characteristics

MaterialSteel
DesignTruss - Deck
Total Length493.1 ft (150.3 m)
Max Span84.0 ft (25.6 m)
Deck Width24.9 ft (7.6 m)
Deck Area1142.3 sq m
Main Spans1
Year Built1946

Traffic

Avg Daily Traffic50
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerU.S. Forest Service
Historical SignificanceHistorical significance is not determined
Scour Critical4 — Foundations need monitoring
Structure Number051754000001028

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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