Structure 12C0299 · Butte County, CA

Bruce Road over S Fork Dead Horse Slough

Carries Bruce Road over S Fork Dead Horse Slough, N/o 6th ST.

Overall conditionFair

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

How ratings work
Culvertsets the rating5/9 · Fair
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT43 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 5/9

A culvert 43 ft across with 4 openings. 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, so those are drawn as typical for a culvert.

Built1981rebuilt 2006
Length43.3 ft13.2 m
Daily traffic14,500counted 2015
Last inspectedOctober 2024every 24 months

Location

StateCalifornia
CountyButte
LocationN/o 6th ST
CarriesBruce Road
CrossesS Fork Dead Horse Slough
Coordinates39.74323, -121.79216

Physical Characteristics

MaterialConcrete Continuous
DesignCulvert
Total Length43.3 ft (13.2 m)
Max Span10.8 ft (3.3 m)
Deck Width86.0 ft (26.2 m)
Deck Area345.8 sq m
Main Spans4
Year Built1981 (reconstructed 2006)

Traffic

Avg Daily Traffic14,500 (2015)
Truck Traffic4%
Lanes On Bridge4

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number12C0299

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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