US Bridges

Wright Bros Blv over I-380

Fair

Linn County, Iowa · 2.5 MI S. of Jct. US 30 · Structure no. 000000000600530

Built
1971
54 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
257 ft
4 main spans
Daily traffic
9,990
2022 count
Owner
State
State Highway Agency

About this bridge

Wright Bros Blv over I-380 is a prestressed concrete stringer/multi-beam or girder carrying Wright Bros Blv over I-380 in Linn County, Iowa. It was built in 1971, so it is 54 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 6 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 9,990 vehicles a day, roughly 17% of them trucks, projected to reach 9,990 by 2042. The structure is 257 ft (78.3 m) long and 36 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesWright Bros Blv
CrossesI-380
Location2.5 MI S. of Jct. US 30
RouteCity Street 0
CountyLinn County
StateIowa
Coordinates41.89066, -91.6714
Functional classUrban Minor Arterial

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating88.4 US tons
Inventory rating36.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length257 ft (78.3 m)
Longest span87 ft (26.5 m)
Deck width36 ft (10.9 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,990 (2022)
Projected traffic9,990 by 2042
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed1.9 mi (3 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 Wright Bros Blv over I-380 built?

It was built in 1971, making it 54 years old in 2025.

What condition is Wright Bros Blv over I-380 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 Wright Bros Blv over I-380 carry?

About 9,990 vehicles per day (2022 count), of which roughly 17% are trucks.

How long is Wright Bros Blv over I-380?

The structure is 257 ft (78.3 m) long with a longest span of 87 ft (26.5 m) and a deck 36 ft wide.

Who owns Wright Bros Blv over I-380?

It is owned by the State Highway Agency.