Structure S080 12255R · Keith County, NE

I80 over Western Canal

Carries I80 over Western Canal, 4w Ogallala Interchg.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructure8/9 · Very Good
Channelnot part of overall9/9 · Excellent
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT82 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 8/9

82 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 multi-beam bridge.

Built200323 years old
Length82.0 ft25 m
Daily traffic15,280counted 2018
Last inspectedOctober 2023every 48 months

Location

StateNebraska
CountyKeith
Location4w Ogallala Interchg
CarriesI80
CrossesWestern Canal
Coordinates41.09820, -101.79020

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length82.0 ft (25 m)
Max Span80.1 ft (24.4 m)
Deck Width44.3 ft (13.5 m)
Deck Area337.5 sq m
Main Spans1
Year Built2003

Traffic

Avg Daily Traffic15,280 (2018)
Truck Traffic45%
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure NumberS080 12255R

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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