Structure M077041833 · Otoe County, NE

Nebraska Street over N Fk Little Nemaha River

Carries Nebraska Street over N Fk Little Nemaha River, Dunbar Nebraska @ Wheeler.

Overall conditionPoor

Set by its lowest-rated component: Substructure at 4 of 9.

How ratings work
Deck5/9 · Fair
Superstructure6/9 · Satisfactory
Substructuresets the rating4/9 · Poor
Channelnot part of overall3/9 · Serious
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT104 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 6/9Substructure 4/9 · sets the rating

104 ft end to end, longest span 42 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 multi-beam bridge.

Built193591 years old
Length104.0 ft31.7 m
Daily traffic350counted 2003
Last inspectedNovember 2024every 24 months

Location

StateNebraska
CountyOtoe
LocationDunbar Nebraska @ Wheeler
CarriesNebraska Street
CrossesN Fk Little Nemaha River
Coordinates40.66810, -96.02590

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length104.0 ft (31.7 m)
Max Span42.0 ft (12.8 m)
Deck Width36.4 ft (11.1 m)
Deck Area351.9 sq m
Main Spans3
Year Built1935

Traffic

Avg Daily Traffic350 (2003)
Truck Traffic10%
Lanes On Bridge2

Inspection & Ownership

Last InspectionNovember 2024
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical2 — Bridge closed (monitoring)
Structure NumberM077041833

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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