Structure 700485 · Pottawattamie County, IA

I29 NB To I80 WB over I 29 NB

Carries I29 NB To I80 WB over I 29 NB, E-w Connector.

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
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT921 FT OVERALL200 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 8/9

921 ft end to end, longest span 238 ft: about 2.6 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.

Built20197 years old
Length920.6 ft280.6 m
Daily traffic7,900counted 2022
Last inspectedSeptember 2023every 24 months

Location

StateIowa
CountyPottawattamie
LocationE-w Connector
CarriesI29 NB To I80 WB
CrossesI 29 NB
Coordinates41.23359, -95.89484

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length920.6 ft (280.6 m)
Max Span237.9 ft (72.5 m)
Deck Width45.3 ft (13.8 m)
Deck Area3872.3 sq m
Main Spans5
Year Built2019

Traffic

Avg Daily Traffic7,900 (2022)
Truck Traffic27%
Lanes On Bridge2
Lanes Under Bridge5

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000000700485

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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