Structure 19355 · Twin Falls County, ID

SH 46 over Snake River;ken Curtis

Carries SH 46 over Snake River;ken Curtis, 4.5 N. Buhl.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure and Substructure at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT201 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

201 ft end to end: about 3 semi-trucks nose to tail. Lengths and the semi-truck 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.

Built1968rebuilt 2015
Length201.1 ft61.3 m
Daily traffic4,700counted 2023
Last inspectedAugust 2023every 24 months

Location

StateIdaho
CountyTwin Falls
Location4.5 N. Buhl
CarriesSH 46
CrossesSnake River;ken Curtis
Coordinates42.67067, -114.76008

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length201.1 ft (61.3 m)
Max Span108.9 ft (33.2 m)
Deck Width33.1 ft (10.1 m)
Deck Area619.1 sq m
Main Spans1
Year Built1968 (reconstructed 2015)

Traffic

Avg Daily Traffic4,700 (2023)
Truck Traffic14%
Lanes On Bridge2

Inspection & Ownership

Last InspectionAugust 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical3 — Scour critical
Structure Number000000000019355

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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