Structure 607650 · Des Moines County, IA

US 34 EB over Prairie Grove RD

Carries US 34 EB over Prairie Grove RD, 1.3 Mi E Of Jct Us34 Bus..

Overall conditionGood

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

How ratings work
Deck8/9 · Very Good
Superstructuresets the rating7/9 · Good
Substructure8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT117 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 7/9 · sets the ratingSubstructure 8/9

117 ft end to end. Lengths and the car 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.

Built200224 years old
Length117.1 ft35.7 m
Daily traffic4,000counted 2022
Last inspectedNovember 2024every 24 months

Location

StateIowa
CountyDes Moines
Location1.3 Mi E Of Jct Us34 Bus.
CarriesUS 34 EB
CrossesPrairie Grove RD
Coordinates40.83214, -91.24308

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length117.1 ft (35.7 m)
Max Span117.1 ft (35.7 m)
Deck Width42.7 ft (13 m)
Deck Area464.1 sq m
Main Spans1
Year Built2002

Traffic

Avg Daily Traffic4,000 (2022)
Truck Traffic15%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionNovember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000000607650

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.

Nearby Bridges