Structure S105 01368 · Richardson County, NE

N105 over Kirkham Creek

Carries N105 over Kirkham Creek, 3.5w 2n Humboldt.

Overall conditionPoor

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

How ratings work
Deck5/9 · Fair
Superstructure5/9 · Fair
Substructuresets the rating4/9 · Poor
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT73 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 5/9Substructure 4/9 · sets the rating

73 ft end to end, longest span 30 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.

Built1949rebuilt 1980
Length73.2 ft22.3 m
Daily traffic460counted 2018
Last inspectedAugust 2024every 24 months

Location

StateNebraska
CountyRichardson
Location3.5w 2n Humboldt
CarriesN105
CrossesKirkham Creek
Coordinates40.20370, -96.01030

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length73.2 ft (22.3 m)
Max Span29.9 ft (9.1 m)
Deck Width30.5 ft (9.3 m)
Deck Area207.4 sq m
Main Spans3
Year Built1949 (reconstructed 1980)

Traffic

Avg Daily Traffic460 (2018)
Truck Traffic11%
Lanes On Bridge2

Inspection & Ownership

Last InspectionAugust 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure NumberS105 01368

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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