Structure 15C0130 · Colusa County, CA

Brim Road over Bear Creek

Carries Brim Road over Bear Creek, 0.1 Mi W Bear Valley Road.

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 overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

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

22 ft end to end. Lengths are drawn to scale; at this length a semi-truck would be a speck. 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 tee-beam bridge.

Built1920106 years old
Length22.0 ft6.7 m
Daily traffic15counted 2015
Last inspectedOctober 2024every 24 months

Location

StateCalifornia
CountyColusa
Location0.1 Mi W Bear Valley Road
CarriesBrim Road
CrossesBear Creek
Coordinates39.16412, -122.44214

Physical Characteristics

MaterialConcrete
DesignTee Beam
Total Length22.0 ft (6.7 m)
Max Span20.3 ft (6.2 m)
Deck Width20.3 ft (6.2 m)
Deck Area41.5 sq m
Main Spans1
Year Built1920

Traffic

Avg Daily Traffic15 (2015)
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 Number15C0130

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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