Structure 15C0135 · Colusa County, CA

Dennis DR over Salt Creek

Carries Dennis DR over Salt Creek, 0.1 Mi W Lodoga-stonyford.

Overall conditionPoor

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

How ratings work
Decksets the rating4/9 · Poor
Superstructure5/9 · Fair
Substructure6/9 · Satisfactory
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT38 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 4/9 · sets the ratingSuperstructure 5/9Substructure 6/9

38 ft end to end, longest span 31 ft. 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.

Built1935rebuilt 2010
Length37.7 ft11.5 m
Daily traffic23counted 2014
Last inspectedOctober 2024every 24 months

Location

StateCalifornia
CountyColusa
Location0.1 Mi W Lodoga-stonyford
CarriesDennis DR
CrossesSalt Creek
Coordinates39.36513, -122.55031

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length37.7 ft (11.5 m)
Max Span30.8 ft (9.4 m)
Deck Width18.7 ft (5.7 m)
Deck Area65.5 sq m
Main Spans2
Year Built1935 (reconstructed 2010)

Traffic

Avg Daily Traffic23 (2014)
Truck Traffic10%
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalUnknown
Structure Number15C0135

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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