Structure 609905 · Pottawattamie County, IA

I 80 WB over Missouri Rvr RD Rr

Carries I 80 WB over Missouri Rvr RD Rr, Nebraska State Line.

Overall conditionGood

Set by its lowest-rated component: Deck at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructure8/9 · Very Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT2,483 FT OVERALL500 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 8/9

2,483 ft end to end, longest span 425 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 girder bridge.

Built201016 years old
Length2482.9 ft756.8 m
Daily traffic25,250counted 2022
Last inspectedAugust 2024every 24 months

Location

StateIowa
CountyPottawattamie
LocationNebraska State Line
CarriesI 80 WB
CrossesMissouri Rvr RD Rr
Coordinates41.23233, -95.90399

Physical Characteristics

MaterialSteel
DesignGirder and Floorbeam
Total Length2482.9 ft (756.8 m)
Max Span424.9 ft (129.5 m)
Deck Width87.3 ft (26.6 m)
Deck Area20130.9 sq m
Main Spans4
Year Built2010

Traffic

Avg Daily Traffic25,250 (2022)
Truck Traffic24%
Lanes On Bridge5

Inspection & Ownership

Last InspectionAugust 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number000000000609905

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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