Structure 19455 · Twin Falls County, ID

Stc2739;3800 E. RD over Lateral 10

Carries Stc2739;3800 E. RD over Lateral 10, 1.4 N. 0.3 W. Hansen.

Overall conditionFair

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

How ratings work
Deck6/9 · Satisfactory
Superstructure6/9 · Satisfactory
Substructuresets the rating5/9 · Fair
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

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

24 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 slab bridge.

Built1920rebuilt 1940
Length24.0 ft7.3 m
Daily traffic2,900counted 2023
Last inspectedFebruary 2024every 24 months

Location

StateIdaho
CountyTwin Falls
Location1.4 N. 0.3 W. Hansen
CarriesStc2739;3800 E. RD
CrossesLateral 10
Coordinates42.54944, -114.30611

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length24.0 ft (7.3 m)
Max Span23.0 ft (7 m)
Deck Width33.8 ft (10.3 m)
Deck Area75.2 sq m
Main Spans1
Year Built1920 (reconstructed 1940)

Traffic

Avg Daily Traffic2,900 (2023)
Truck Traffic8%
Lanes On Bridge2

Inspection & Ownership

Last InspectionFebruary 2024
Inspection FrequencyEvery 24 months
OwnerOther Local Agencies
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number000000000019455

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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