Structure SL20A00090 · Cuming County, NE

L20a N51 To Us275 over Plum Creek

Carries L20a N51 To Us275 over Plum Creek, 5n Beemer.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 8 of 9.

How ratings work
Decksets the rating8/9 · Very Good
Superstructuresets the rating8/9 · Very Good
Substructuresets the rating8/9 · Very Good
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT122 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 8/9

122 ft end to end, longest span 49 ft. Lengths and the semi-truck 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.

Built1963rebuilt 1994
Length122.0 ft37.2 m
Daily traffic640counted 2018
Last inspectedMay 2023every 24 months

Location

StateNebraska
CountyCuming
Location5n Beemer
CarriesL20a N51 To Us275
CrossesPlum Creek
Coordinates41.99040, -96.80640

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length122.0 ft (37.2 m)
Max Span48.9 ft (14.9 m)
Deck Width38.4 ft (11.7 m)
Deck Area435.2 sq m
Main Spans3
Year Built1963 (reconstructed 1994)

Traffic

Avg Daily Traffic640 (2018)
Truck Traffic10%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMay 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure NumberSL20A00090

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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