Structure 5C0238 · Trinity County, CA

Steiner Flat Road over Dutton Creek

Carries Steiner Flat Road over Dutton Creek, 3.8 Mi NW Of Sr3 @d.city.

Overall conditionPoor

Set by its lowest-rated component: Superstructure at 4 of 9.

How ratings work
Deck5/9 · Fair
Superstructuresets the rating4/9 · Poor
Substructure7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT39 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 4/9 · sets the ratingSubstructure 7/9

39 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 multi-beam bridge.

Built195076 years old
Length39.4 ft12 m
Daily traffic100counted 2011
Last inspectedAugust 2023every 24 months

Location

StateCalifornia
CountyTrinity
Location3.8 Mi NW Of Sr3 @d.city
CarriesSteiner Flat Road
CrossesDutton Creek
Coordinates40.67501, -122.97048

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length39.4 ft (12 m)
Max Span38.1 ft (11.6 m)
Deck Width17.4 ft (5.3 m)
Deck Area63.6 sq m
Main Spans1
Year Built1950

Traffic

Avg Daily Traffic100 (2011)
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 Number05C0238

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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