Structure 30520 · Kootenai County, ID

Stc5751;old HWY 95 over Sirr & Uprr;s.athol Op

Carries Stc5751;old HWY 95 over Sirr & Uprr;s.athol Op, 1.5 S. Athol.

Overall conditionPoor

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

How ratings work
Decksets the rating4/9 · Poor
Superstructuresets the rating4/9 · Poor
Substructure5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT181 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 4/9 · sets the ratingSuperstructure 4/9 · sets the ratingSubstructure 5/9

181 ft end to end, longest span 37 ft: 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 tee-beam bridge.

Built192997 years old
Length181.1 ft55.2 m
Daily traffic540counted 2023
Last inspectedOctober 2024every 12 months

Location

StateIdaho
CountyKootenai
Location1.5 S. Athol
CarriesStc5751;old HWY 95
CrossesSirr & Uprr;s.athol Op
Coordinates47.92825, -116.71417

Physical Characteristics

MaterialConcrete
DesignTee Beam
Total Length181.1 ft (55.2 m)
Max Span37.1 ft (11.3 m)
Deck Width27.2 ft (8.3 m)
Deck Area458.2 sq m
Main Spans6
Year Built1929

Traffic

Avg Daily Traffic540 (2023)
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 12 months
OwnerOther Local Agencies
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure Number000000000030520

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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