US Bridges

SB I-35 WB I-80 over Des Moines River & Path

Good

Polk County, Iowa · 1.6 Mi. E of Jct. Ia 28 · Structure no. 000000000041510

Built
1958
67 years old, rebuilt 2019
Condition
Good
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
712 ft
7 main spans
Daily traffic
48,000
2022 count
Owner
State
State Highway Agency

About this bridge

SB I-35 WB I-80 over Des Moines River & Path is a prestressed concrete stringer/multi-beam or girder carrying SB I-35 WB I-80 over Des Moines River & Path in Polk County, Iowa. It was built in 1958 and reconstructed in 2019, so it is 67 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 48,000 vehicles a day, roughly 20% of them trucks, projected to reach 48,000 by 2043. The structure is 712 ft (217 m) long and 90 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesSB I-35 WB I-80
CrossesDes Moines River & Path
Location1.6 Mi. E of Jct. Ia 28
RouteInterstate 80
StateIowa
Coordinates41.65076, -93.66526
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating86.5 US tons
Inventory rating39.4 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans7
Design loadHS 20
Structure length712 ft (217 m)
Longest span102 ft (31.1 m)
Deck width90 ft (27.3 m)
Roadway width86 ft (26.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic48,000 (2022)
Projected traffic48,000 by 2043
Trucks20%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
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 SB I-35 WB I-80 over Des Moines River & Path built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 2019.

What condition is SB I-35 WB I-80 over Des Moines River & Path 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 March 2023.

How much traffic does SB I-35 WB I-80 over Des Moines River & Path carry?

About 48,000 vehicles per day (2022 count), of which roughly 20% are trucks.

How long is SB I-35 WB I-80 over Des Moines River & Path?

The structure is 712 ft (217 m) long with a longest span of 102 ft (31.1 m) and a deck 90 ft wide.

Who owns SB I-35 WB I-80 over Des Moines River & Path?

It is owned by the State Highway Agency.