US Bridges

US 34 WB over Ia 438

Fair

Henry County, Iowa · At the Jct. of Iowa 438 · Structure no. 000000000608405

Built
2001
24 years old
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
228 ft
3 main spans
Daily traffic
1,520
2022 count
Owner
State
State Highway Agency

About this bridge

US 34 WB over Ia 438 is a prestressed concrete stringer/multi-beam or girder carrying US 34 WB over Ia 438 in Henry County, Iowa. It was built in 2001, so it is 24 years old, younger 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 1,520 vehicles a day, roughly 33% of them trucks, projected to reach 1,520 by 2044. The structure is 228 ft (69.5 m) long and 53 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS 34 WB
CrossesIa 438
LocationAt the Jct. of Iowa 438
RouteU.S. Route 34
StateIowa
Coordinates40.98868, -91.54289
Functional classRural Principal Arterial - Other

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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating90.2 US tons
Inventory rating44.3 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length228 ft (69.5 m)
Longest span121 ft (36.9 m)
Deck width53 ft (16.2 m)
Roadway width50 ft (15.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,520 (2022)
Projected traffic1,520 by 2044
Trucks33%
Lanes on structure2
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 US 34 WB over Ia 438 built?

It was built in 2001, making it 24 years old in 2025.

What condition is US 34 WB over Ia 438 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 January 2024.

How much traffic does US 34 WB over Ia 438 carry?

About 1,520 vehicles per day (2022 count), of which roughly 33% are trucks.

How long is US 34 WB over Ia 438?

The structure is 228 ft (69.5 m) long with a longest span of 121 ft (36.9 m) and a deck 53 ft wide.

Who owns US 34 WB over Ia 438?

It is owned by the State Highway Agency.