Structure 44771 · Pottawattamie County, IA

I 29 SB over 2nd AVE

Carries I 29 SB over 2nd AVE, 0.1 Mi. S Of Jct. U.s. 6.

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 FT197 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 8/9

197 ft end to end, longest span 77 ft: about 3 semi-trucks nose to tail. 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.

Built20233 years old
Length197.2 ft60.1 m
Daily traffic4,450counted 2022
Last inspectedFebruary 2024every 24 months

Location

StateIowa
CountyPottawattamie
Location0.1 Mi. S Of Jct. U.s. 6
CarriesI 29 SB
Crosses2nd AVE
Coordinates41.26002, -95.90752

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length197.2 ft (60.1 m)
Max Span77.1 ft (23.5 m)
Deck Width51.2 ft (15.6 m)
Deck Area937.6 sq m
Main Spans3
Year Built2023

Traffic

Avg Daily Traffic4,450 (2022)
Truck Traffic23%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionFebruary 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000000044771

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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