Structure 18901 · Kootenai County, ID

SH 97 over Coeur Dalene River

Carries SH 97 over Coeur Dalene River, 0.6 N. Harrison.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructure8/9 · Very Good
Substructuresets the rating5/9 · Fair
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT606 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 8/9Substructure 5/9 · sets the rating

606 ft end to end, longest span 195 ft: about 1.7 football fields. 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.

Built200719 years old
Length606.0 ft184.7 m
Daily traffic820counted 2023
Last inspectedApril 2024every 24 months

Location

StateIdaho
CountyKootenai
Location0.6 N. Harrison
CarriesSH 97
CrossesCoeur Dalene River
Coordinates47.46428, -116.76531

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length606.0 ft (184.7 m)
Max Span194.9 ft (59.4 m)
Deck Width46.3 ft (14.1 m)
Deck Area2604.3 sq m
Main Spans4
Year Built2007

Traffic

Avg Daily Traffic820 (2023)
Truck Traffic8%
Lanes On Bridge2

Inspection & Ownership

Last InspectionApril 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical5 — Stable for scour
Structure Number000000000018901

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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