Structure 61001000001017 · Siskiyou County, CA

Road over Butte Fork Creek

Carries Road over Butte Fork Creek, No Data Entered.

Overall conditionPoor

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

How ratings work
Decksets the rating4/9 · Poor
Superstructure6/9 · Satisfactory
Substructure5/9 · Fair
Channelnot part of overall9/9 · Excellent
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT71 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 4/9 · sets the ratingSuperstructure 6/9Substructure 5/9

71 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 multi-beam bridge.

Built1951rebuilt 1983
Length70.9 ft21.6 m
Daily traffic10counted 2006
Last inspectedJune 2023every 24 months

Location

StateCalifornia
CountySiskiyou
LocationNo Data Entered
CarriesRoad
CrossesButte Fork Creek
Coordinates41.97253, -123.18431

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length70.9 ft (21.6 m)
Max Span67.9 ft (20.7 m)
Deck Width16.1 ft (4.9 m)
Deck Area105.8 sq m
Main Spans1
Year Built1951 (reconstructed 1983)

Traffic

Avg Daily Traffic10 (2006)
Lanes On Bridge1

Inspection & Ownership

Last InspectionJune 2023
Inspection FrequencyEvery 24 months
OwnerU.S. Forest Service
Historical SignificanceHistorical significance is not determined
Scour Critical9 — Foundation above flood level
Structure Number061001000001017

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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