US Bridges

NB I-35 EB I-80 over Des Moines Rvr Bike Path

Good

Polk County, Iowa · 1.6 Mi. E of Jct. Ia 28 · Structure no. 000000000041500

Built
1958
67 years old, rebuilt 1991
Condition
Good
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
712 ft
7 main spans
Daily traffic
48,850
2023 count
Owner
State
State Highway Agency

About this bridge

NB I-35 EB I-80 over Des Moines Rvr Bike Path is a prestressed concrete stringer/multi-beam or girder carrying NB I-35 EB I-80 over Des Moines Rvr Bike Path in Polk County, Iowa. It was built in 1958 and reconstructed in 1991, 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 48,850 vehicles a day, roughly 20% of them trucks, projected to reach 48,850 by 2043. The structure is 712 ft (217 m) long and 65 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesNB I-35 EB I-80
CrossesDes Moines Rvr Bike Path
Location1.6 Mi. E of Jct. Ia 28
RouteInterstate 80
CountyPolk County
StateIowa
Coordinates41.65069, -93.66785
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 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 rating48.5 US tons
Inventory rating35.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans7
Design loadHS 20
Structure length712 ft (217 m)
Longest span102 ft (31.1 m)
Deck width65 ft (19.9 m)
Roadway width62 ft (19 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic48,850 (2023)
Projected traffic48,850 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 NB I-35 EB I-80 over Des Moines Rvr Bike Path built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 1991.

What condition is NB I-35 EB I-80 over Des Moines Rvr Bike 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 NB I-35 EB I-80 over Des Moines Rvr Bike Path carry?

About 48,850 vehicles per day (2023 count), of which roughly 20% are trucks.

How long is NB I-35 EB I-80 over Des Moines Rvr Bike Path?

The structure is 712 ft (217 m) long with a longest span of 102 ft (31.1 m) and a deck 65 ft wide.

Who owns NB I-35 EB I-80 over Des Moines Rvr Bike Path?

It is owned by the State Highway Agency.