US Bridges

US 34 WB over Skunk River

Good

Henry County, Iowa · 3.8 Mi. E of Jct. SR W40 · Structure no. 000000000608390

Built
2004
21 years old
Condition
Good
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
530 ft
4 main spans
Daily traffic
3,400
2022 count
Owner
State
State Highway Agency

About this bridge

US 34 WB over Skunk River is a prestressed concrete stringer/multi-beam or girder carrying US 34 WB over Skunk River in Henry County, Iowa. It was built in 2004, so it is 21 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 3,400 vehicles a day, roughly 22% of them trucks, projected to reach 3,400 by 2042. The structure is 530 ft (161.5 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS 34 WB
CrossesSkunk River
Location3.8 Mi. E of Jct. SR W40
RouteU.S. Route 34
StateIowa
Coordinates40.97547, -91.67724
Functional classRural Principal Arterial - Other

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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating91.7 US tons
Inventory rating46.6 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length530 ft (161.5 m)
Longest span141 ft (43 m)
Deck width43 ft (13 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,400 (2022)
Projected traffic3,400 by 2042
Trucks22%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
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 Skunk River built?

It was built in 2004, making it 21 years old in 2025.

What condition is US 34 WB over Skunk River 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 April 2023.

How much traffic does US 34 WB over Skunk River carry?

About 3,400 vehicles per day (2022 count), of which roughly 22% are trucks.

How long is US 34 WB over Skunk River?

The structure is 530 ft (161.5 m) long with a longest span of 141 ft (43 m) and a deck 43 ft wide.

Who owns US 34 WB over Skunk River?

It is owned by the State Highway Agency.