Structure S081 12051R · Platte County, NE

SB Us81 over Shell Creek Overflow

Carries SB Us81 over Shell Creek Overflow, 9nw Columbus.

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 FT94 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

94 ft end to end, longest span 36 ft. 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 slab bridge.

Built199828 years old
Length94.2 ft28.7 m
Daily traffic7,875counted 2018
Last inspectedJune 2021every 48 months

Location

StateNebraska
CountyPlatte
Location9nw Columbus
CarriesSB Us81
CrossesShell Creek Overflow
Coordinates41.51460, -97.46500

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length94.2 ft (28.7 m)
Max Span36.1 ft (11 m)
Deck Width40.4 ft (12.3 m)
Deck Area353.0 sq m
Main Spans3
Year Built1998

Traffic

Avg Daily Traffic7,875 (2018)
Truck Traffic18%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJune 2021
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure NumberS081 12051R

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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