US Bridges

I 235 over Des Moines Rvr Rbrtraydr

Good

Polk County, Iowa · 4.6 Miles E of JCT Ia 28 · Structure no. 000000000042740

Built
1962
63 years old, rebuilt 2007
Condition
Good
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
864 ft
2 main spans
Daily traffic
88,200
2023 count
Owner
State
State Highway Agency

About this bridge

I 235 over Des Moines Rvr Rbrtraydr is a steel continuous stringer/multi-beam or girder carrying I 235 over Des Moines Rvr Rbrtraydr in Polk County, Iowa. It was built in 1962 and reconstructed in 2007, so it is 63 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 88,200 vehicles a day, roughly 8% of them trucks, projected to reach 88,200 by 2043. The structure is 864 ft (263.3 m) long and 142 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI 235
CrossesDes Moines Rvr Rbrtraydr
Location4.6 Miles E of JCT Ia 28
RouteInterstate 235
CountyPolk County
StateIowa
Coordinates41.59555, -93.61857
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 21 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating56.9 US tons
Inventory rating34.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2 (+8 approach)
Design loadHS 20
Structure length864 ft (263.3 m)
Longest span150 ft (45.7 m)
Deck width142 ft (43.3 m)
Roadway width135 ft (41.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic88,200 (2023)
Projected traffic88,200 by 2043
Trucks8%
Lanes on structure8
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and waterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was I 235 over Des Moines Rvr Rbrtraydr built?

It was built in 1962, making it 63 years old in 2025. It was reconstructed in 2007.

What condition is I 235 over Des Moines Rvr Rbrtraydr in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2024.

How much traffic does I 235 over Des Moines Rvr Rbrtraydr carry?

About 88,200 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is I 235 over Des Moines Rvr Rbrtraydr?

The structure is 864 ft (263.3 m) long with a longest span of 150 ft (45.7 m) and a deck 142 ft wide.

Who owns I 235 over Des Moines Rvr Rbrtraydr?

It is owned by the State Highway Agency.