Structure 10404000036353 · Benewah County, ID

Fs Route No. 447 over E.f. Emerald

Carries Fs Route No. 447 over E.f. Emerald, E.f. Emerald Creek.

Overall conditionGood

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

How ratings work
Decksets the rating9/9 · Excellent
Superstructuresets the rating9/9 · Excellent
Substructuresets the rating9/9 · Excellent
Channelnot part of overall9/9 · Excellent
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT67 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 9/9Superstructure 9/9Substructure 9/9

67 ft end to end. Lengths and the car 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.

Built2024rebuilt 2075
Length66.9 ft20.4 m
Daily traffic501 lanes
Last inspectedSeptember 2024every 24 months

Location

StateIdaho
CountyBenewah
LocationE.f. Emerald Creek
CarriesFs Route No. 447
CrossesE.f. Emerald
Coordinates47.02115, -116.32939

Physical Characteristics

MaterialPrestressed Concrete
DesignTee Beam
Total Length66.9 ft (20.4 m)
Max Span65.0 ft (19.8 m)
Deck Width18.0 ft (5.5 m)
Deck Area112.2 sq m
Main Spans1
Year Built2024 (reconstructed 2075)

Traffic

Avg Daily Traffic50
Lanes On Bridge1

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerU.S. Forest Service
Historical SignificanceHistorical significance is not determined
Scour Critical4 — Foundations need monitoring
Structure Number010404000036353

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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