Structure 19700 · Canyon County, ID

Stc 3740;notus RD over Riverside Canal

Carries Stc 3740;notus RD over Riverside Canal, 3.0 S. Notus.

Overall conditionFair

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

How ratings work
Deck8/9 · Very Good
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
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 8/9Superstructure 7/9Substructure 6/9 · 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 multi-beam bridge.

Built1940rebuilt 1972
Length24.0 ft7.3 m
Daily traffic2,500counted 2023
Last inspectedOctober 2024every 24 months

Location

StateIdaho
CountyCanyon
Location3.0 S. Notus
CarriesStc 3740;notus RD
CrossesRiverside Canal
Coordinates43.68178, -116.80286

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length24.0 ft (7.3 m)
Max Span23.0 ft (7 m)
Deck Width32.5 ft (9.9 m)
Deck Area72.3 sq m
Main Spans1
Year Built1940 (reconstructed 1972)

Traffic

Avg Daily Traffic2,500 (2023)
Truck Traffic7%
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerOther Local Agencies
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number000000000019700

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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