US Bridges

US 34 Ia 163 EB over Skunk River

Good

Henry County, Iowa · 3.8 Mi. E of Jct. SR W40 · Structure no. 000000000028431

Built
2022
3 years old
Condition
Good
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
561 ft
4 main spans
Daily traffic
3,800
2021 count
Owner
State
State Highway Agency

About this bridge

US 34 Ia 163 EB over Skunk River is a prestressed concrete stringer/multi-beam or girder carrying US 34 Ia 163 EB over Skunk River in Henry County, Iowa. It was built in 2022, so it is 3 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 3,800 vehicles a day, roughly 21% of them trucks, projected to reach 3,800 by 2043. The structure is 561 ft (171.1 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS 34 Ia 163 EB
CrossesSkunk River
Location3.8 Mi. E of Jct. SR W40
RouteU.S. Route 34
StateIowa
Coordinates40.97498, -91.67905
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.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHL 93
Structure length561 ft (171.1 m)
Longest span142 ft (43.3 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,800 (2021)
Projected traffic3,800 by 2043
Trucks21%
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 34 Ia 163 EB over Skunk River built?

It was built in 2022, making it 3 years old in 2025.

What condition is US 34 Ia 163 EB 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 Ia 163 EB over Skunk River carry?

About 3,800 vehicles per day (2021 count), of which roughly 21% are trucks.

How long is US 34 Ia 163 EB over Skunk River?

The structure is 561 ft (171.1 m) long with a longest span of 142 ft (43.3 m) and a deck 43 ft wide.

Who owns US 34 Ia 163 EB over Skunk River?

It is owned by the State Highway Agency.