Structure S480 00378L · Douglas County, NE

Wb-i480 over 11th Thru Missouri Br

Carries Wb-i480 over 11th Thru Missouri Br, In Omaha.

Overall conditionFair

Set by its lowest-rated component: Deck at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure8/9 · Very Good
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT2,481 FT OVERALL500 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 8/9Substructure 7/9

2,481 ft end to end, longest span 172 ft: about 6.9 football fields. 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 multi-beam bridge.

Built1970rebuilt 2001
Length2481.0 ft756.2 m
Daily traffic36,195counted 2018
Last inspectedMarch 2023every 24 months

Location

StateNebraska
CountyDouglas
LocationIn Omaha
CarriesWb-i480
Crosses11th Thru Missouri Br
Coordinates41.26070, -95.92740

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length2481.0 ft (756.2 m)
Max Span171.9 ft (52.4 m)
Deck Width45.6 ft (13.9 m)
Deck Area10511.2 sq m
Main Spans21
Year Built1970 (reconstructed 2001)

Traffic

Avg Daily Traffic36,195 (2018)
Truck Traffic5%
Lanes On Bridge3
Lanes Under Bridge16

Inspection & Ownership

Last InspectionMarch 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure NumberS480 00378L

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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