US Bridges

EB I-80 over SR V18

Fair

Poweshiek County, Iowa · 4.5 Mi.W.Of Jct. Iowa 21 · Structure no. 000000000046180

Built
1963
62 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
137 ft
3 main spans
Daily traffic
13,600
2023 count
Owner
State
State Highway Agency

About this bridge

EB I-80 over SR V18 is a prestressed concrete stringer/multi-beam or girder carrying EB I-80 over SR V18 in Poweshiek County, Iowa. It was built in 1963, so it is 62 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 13,600 vehicles a day, roughly 39% of them trucks, projected to reach 13,600 by 2043. The structure is 137 ft (41.8 m) long and 46 ft wide.

Location

Open in Google Maps
CarriesEB I-80
CrossesSR V18
Location4.5 Mi.W.Of Jct. Iowa 21
RouteInterstate 80
CountyPoweshiek County
StateIowa
Coordinates41.69579, -92.44552
Functional classRural Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71.5 US tons
Inventory rating32 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length137 ft (41.8 m)
Longest span56 ft (17.1 m)
Deck width46 ft (13.9 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,600 (2023)
Projected traffic13,600 by 2043
Trucks39%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was EB I-80 over SR V18 built?

It was built in 1963, making it 62 years old in 2025.

What condition is EB I-80 over SR V18 in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in June 2023.

How much traffic does EB I-80 over SR V18 carry?

About 13,600 vehicles per day (2023 count), of which roughly 39% are trucks.

How long is EB I-80 over SR V18?

The structure is 137 ft (41.8 m) long with a longest span of 56 ft (17.1 m) and a deck 46 ft wide.

Who owns EB I-80 over SR V18?

It is owned by the State Highway Agency.