Structure 10502000000078 · Latah County, ID

Fdr 447 over Nf Palouse River

Carries Fdr 447 over Nf Palouse River, 17 Miles From Potlatch Id.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT56 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

56 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.

Built199828 years old
Length56.1 ft17.1 m
Daily traffic201 lanes
Last inspectedAugust 2021every 48 months

Location

StateIdaho
CountyLatah
Location17 Miles From Potlatch Id
CarriesFdr 447
CrossesNf Palouse River
Coordinates46.95826, -116.59964

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignTee Beam
Total Length56.1 ft (17.1 m)
Max Span53.1 ft (16.2 m)
Deck Width17.4 ft (5.3 m)
Deck Area90.6 sq m
Main Spans1
Year Built1998

Traffic

Avg Daily Traffic20
Lanes On Bridge1

Inspection & Ownership

Last InspectionAugust 2021
Inspection FrequencyEvery 48 months
OwnerU.S. Forest Service
Historical SignificanceHistorical significance is not determined
Scour Critical5 — Stable for scour
Structure Number010502000000078

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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