Structure 33615 · Valley County, ID

Elk Summit RD over South Fork Salmon River

Carries Elk Summit RD over South Fork Salmon River, 14.6 N 4.3 W Yellow Pine.

Overall conditionPoor

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

How ratings work
Deck6/9 · Satisfactory
Superstructure7/9 · Good
Substructuresets the rating4/9 · Poor
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT310 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 7/9Substructure 4/9 · sets the rating

310 ft end to end: about 4 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 through truss.

Built1934rebuilt 1985
Length310.0 ft94.5 m
Daily traffic10counted 2023
Last inspectedAugust 2024every 12 months

Location

StateIdaho
CountyValley
Location14.6 N 4.3 W Yellow Pine
CarriesElk Summit RD
CrossesSouth Fork Salmon River
Coordinates45.17478, -115.57978

Physical Characteristics

MaterialSteel
DesignTruss - Thru
Total Length310.0 ft (94.5 m)
Max Span250.0 ft (76.2 m)
Deck Width14.4 ft (4.4 m)
Deck Area415.8 sq m
Main Spans1
Year Built1934 (reconstructed 1985)

Traffic

Avg Daily Traffic10 (2023)
Lanes On Bridge1

Inspection & Ownership

Last InspectionAugust 2024
Inspection FrequencyEvery 12 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number000000000033615

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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