US Bridges

WB I 80 over US 63

Fair

Poweshiek County, Iowa · At Jct. US 63 · Structure no. 000000000046160

Built
1964
61 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
227 ft
4 main spans
Daily traffic
13,300
2022 count
Owner
State
State Highway Agency

About this bridge

WB I 80 over US 63 is a prestressed concrete stringer/multi-beam or girder carrying WB I 80 over US 63 in Poweshiek County, Iowa. It was built in 1964, so it is 61 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 13,300 vehicles a day, roughly 40% of them trucks, projected to reach 13,300 by 2042. The structure is 227 ft (69.2 m) long and 36 ft wide.

CarriesWB I 80
CrossesUS 63
LocationAt Jct. US 63
RouteInterstate 80
StateIowa
Coordinates41.69662, -92.55188
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating81.4 US tons
Inventory rating33.3 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length227 ft (69.2 m)
Longest span65 ft (19.8 m)
Deck width36 ft (11 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,300 (2022)
Projected traffic13,300 by 2042
Trucks40%
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 WB I 80 over US 63 built?

It was built in 1964, making it 61 years old in 2025.

What condition is WB I 80 over US 63 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 WB I 80 over US 63 carry?

About 13,300 vehicles per day (2022 count), of which roughly 40% are trucks.

How long is WB I 80 over US 63?

The structure is 227 ft (69.2 m) long with a longest span of 65 ft (19.8 m) and a deck 36 ft wide.

Who owns WB I 80 over US 63?

It is owned by the State Highway Agency.