Structure 12C0062 · Butte County, CA

Boucher Street over Little Chico Creek

Carries Boucher Street over Little Chico Creek, Just S Of Humboldt AVE.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructure6/9 · Satisfactory
Substructuresets the rating5/9 · Fair
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT67 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9Substructure 5/9 · sets the rating

67 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 through truss.

Built1920rebuilt 1966
Length66.6 ft20.3 m
Daily traffic1,161counted 2015
Last inspectedOctober 2024every 12 months

Location

StateCalifornia
CountyButte
LocationJust S Of Humboldt AVE
CarriesBoucher Street
CrossesLittle Chico Creek
Coordinates39.73025, -121.82376

Physical Characteristics

MaterialSteel
DesignTruss - Thru
Total Length66.6 ft (20.3 m)
Max Span64.0 ft (19.5 m)
Deck Width17.7 ft (5.4 m)
Deck Area109.6 sq m
Main Spans1
Year Built1920 (reconstructed 1966)

Traffic

Avg Daily Traffic1,161 (2015)
Truck Traffic1%
Lanes On Bridge1

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 12 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalUnknown
Structure Number12C0062

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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