US Bridges

I 80 WB Off Ramp over Drainage

Good

Polk County, Iowa · 0.2 Miles E of US 69 · Structure no. 000000000608220

Built
1999
26 years old
Condition
Good
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
188 ft
3 main spans
Daily traffic
4,080
2022 count
Owner
State
State Highway Agency

About this bridge

I 80 WB Off Ramp over Drainage is a prestressed concrete stringer/multi-beam or girder carrying I 80 WB Off Ramp over Drainage in Polk County, Iowa. It was built in 1999, so it is 26 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 4,080 vehicles a day, roughly 18% of them trucks, projected to reach 4,080 by 2044. The structure is 188 ft (57.3 m) long and 29 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI 80 WB Off Ramp
CrossesDrainage
Location0.2 Miles E of US 69
RouteInterstate 80
StateIowa
Coordinates41.65041, -93.59503
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 inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67.4 US tons
Inventory rating40.3 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length188 ft (57.3 m)
Longest span67 ft (20.4 m)
Deck width29 ft (8.8 m)
Roadway width26 ft (7.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,080 (2022)
Projected traffic4,080 by 2044
Trucks18%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesOther
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 I 80 WB Off Ramp over Drainage built?

It was built in 1999, making it 26 years old in 2025.

What condition is I 80 WB Off Ramp over Drainage 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 August 2024.

How much traffic does I 80 WB Off Ramp over Drainage carry?

About 4,080 vehicles per day (2022 count), of which roughly 18% are trucks.

How long is I 80 WB Off Ramp over Drainage?

The structure is 188 ft (57.3 m) long with a longest span of 67 ft (20.4 m) and a deck 29 ft wide.

Who owns I 80 WB Off Ramp over Drainage?

It is owned by the State Highway Agency.