Structure 13202 · Butte County, ID

US 20 over Inl Central Connector

Carries US 20 over Inl Central Connector, 22.2 E. Arco.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure and Substructure at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT28 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

28 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 rigid-frame bridge.

Built199333 years old
Length27.9 ft8.5 m
Daily traffic4,400counted 2023
Last inspectedMay 2022every 48 months

Location

StateIdaho
CountyButte
Location22.2 E. Arco
CarriesUS 20
CrossesInl Central Connector
Coordinates43.50811, -112.91158

Physical Characteristics

MaterialConcrete
DesignFrame
Total Length27.9 ft (8.5 m)
Max Span27.9 ft (8.5 m)
Deck Width48.9 ft (14.9 m)
Deck Area126.7 sq m
Main Spans1
Year Built1993

Traffic

Avg Daily Traffic4,400 (2023)
Truck Traffic9%
Lanes On Bridge2
Lanes Under Bridge1

Inspection & Ownership

Last InspectionMay 2022
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure Number000000000013202

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.