Structure 41907000013692 · Cache County, UT

Road 20006 over Logan River

Carries Road 20006 over Logan River, 30 M N Of Logan V RT 89.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 8 of 9.

How ratings work
Decksets the rating8/9 · Very Good
Superstructuresets the rating8/9 · Very Good
Substructuresets the rating8/9 · Very Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT40 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 8/9

40 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 box-beam bridge.

Built201016 years old
Length40.0 ft12.2 m
Daily traffic501 lanes
Last inspectedSeptember 2021every 48 months

Location

StateUtah
CountyCache
Location30 M N Of Logan V RT 89
CarriesRoad 20006
CrossesLogan River
Coordinates41.98158, -111.59998

Physical Characteristics

MaterialPrestressed Concrete
DesignBox Beam - Multiple
Total Length40.0 ft (12.2 m)
Max Span39.0 ft (11.9 m)
Deck Width16.1 ft (4.9 m)
Deck Area59.8 sq m
Main Spans1
Year Built2010

Traffic

Avg Daily Traffic50
Lanes On Bridge1

Inspection & Ownership

Last InspectionSeptember 2021
Inspection FrequencyEvery 48 months
OwnerU.S. Forest Service
Historical SignificanceHistorical significance is not determined
Scour Critical5 — Stable for scour
Structure Number041907000013692

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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