US Bridges

NB US 65 over I-80

Good

Polk County, Iowa · At West Junction I-80 · Structure no. 000000000601090

Built
1992
33 years old
Condition
Good
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
313 ft
4 main spans
Daily traffic
7,600
2022 count
Owner
State
State Highway Agency

About this bridge

NB US 65 over I-80 is a steel continuous stringer/multi-beam or girder carrying NB US 65 over I-80 in Polk County, Iowa. It was built in 1992, so it is 33 years old, younger 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 7,600 vehicles a day, roughly 13% of them trucks, projected to reach 7,600 by 2043. The structure is 313 ft (95.4 m) long and 29 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesNB US 65
CrossesI-80
LocationAt West Junction I-80
RouteInterstate 80
CountyPolk County
StateIowa
Coordinates41.65973, -93.52121
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71.5 US tons
Inventory rating42.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length313 ft (95.4 m)
Longest span100 ft (30.5 m)
Deck width29 ft (8.9 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,600 (2022)
Projected traffic7,600 by 2043
Trucks13%
Lanes on structure1
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was NB US 65 over I-80 built?

It was built in 1992, making it 33 years old in 2025.

What condition is NB US 65 over I-80 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 November 2023.

How much traffic does NB US 65 over I-80 carry?

About 7,600 vehicles per day (2022 count), of which roughly 13% are trucks.

How long is NB US 65 over I-80?

The structure is 313 ft (95.4 m) long with a longest span of 100 ft (30.5 m) and a deck 29 ft wide.

Who owns NB US 65 over I-80?

It is owned by the State Highway Agency.