Structure 5C0047 · Trinity County, CA

East Fork Road over E Fk Of N Fk Trinity Riv

Carries East Fork Road over E Fk Of N Fk Trinity Riv, 4.4 Mi North Of SR 299.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructuresets the rating5/9 · Fair
Substructuresets the rating5/9 · Fair
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT51 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 5/9Substructure 5/9

51 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 deck truss.

Built1938rebuilt 1960
Length50.9 ft15.5 m
Daily traffic15counted 2010
Last inspectedAugust 2023every 24 months

Location

StateCalifornia
CountyTrinity
Location4.4 Mi North Of SR 299
CarriesEast Fork Road
CrossesE Fk Of N Fk Trinity Riv
Coordinates40.82063, -123.12394

Physical Characteristics

MaterialSteel
DesignTruss - Deck
Total Length50.9 ft (15.5 m)
Max Span47.9 ft (14.6 m)
Deck Width14.1 ft (4.3 m)
Deck Area66.7 sq m
Main Spans1
Year Built1938 (reconstructed 1960)

Traffic

Avg Daily Traffic15 (2010)
Truck Traffic1%
Lanes On Bridge1

Inspection & Ownership

Last InspectionAugust 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical3 — Scour critical
Structure Number05C0047

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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