Structure 12C0188 · Butte County, CA

Lumpkin-laporte RD over Fall River

Carries Lumpkin-laporte RD over Fall River, 10.5 Mi N/e Feather Falls.

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 overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT66 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 5/9Substructure 5/9

66 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.

Built193096 years old
Length65.9 ft20.1 m
Daily traffic71counted 2019
Last inspectedNovember 2023every 24 months

Location

StateCalifornia
CountyButte
Location10.5 Mi N/e Feather Falls
CarriesLumpkin-laporte RD
CrossesFall River
Coordinates39.65182, -121.18333

Physical Characteristics

MaterialSteel
DesignTruss - Thru
Total Length65.9 ft (20.1 m)
Max Span64.0 ft (19.5 m)
Deck Width18.4 ft (5.6 m)
Deck Area112.6 sq m
Main Spans1
Year Built1930

Traffic

Avg Daily Traffic71 (2019)
Truck Traffic30%
Lanes On Bridge2

Inspection & Ownership

Last InspectionNovember 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalUnknown
Structure Number12C0188

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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