US Bridges

Ia 346 over Wapsipinicon River

Fair

Chickasaw County, Iowa · 2.1 Mi. W of Jct. US 63 · Structure no. 000000000019941

Built
1984
41 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
466 ft
5 main spans
Daily traffic
1,470
2022 count
Owner
State
State Highway Agency

About this bridge

Ia 346 over Wapsipinicon River is a prestressed concrete stringer/multi-beam or girder carrying Ia 346 over Wapsipinicon River in Chickasaw County, Iowa. It was built in 1984, so it is 41 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 1,470 vehicles a day, roughly 17% of them trucks, projected to reach 1,470 by 2044. The structure is 466 ft (142 m) long and 39 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

Location

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CarriesIa 346
CrossesWapsipinicon River
Location2.1 Mi. W of Jct. US 63
RouteState Highway 346
CountyChickasaw County
StateIowa
Coordinates42.96521, -92.3591
Functional classRural 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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99.8 US tons
Inventory rating44.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length466 ft (142 m)
Longest span97 ft (29.6 m)
Deck width39 ft (11.9 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,470 (2022)
Projected traffic1,470 by 2044
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.3 mi (23 km)
TollOn a free road
National Highway SystemNo

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 Ia 346 over Wapsipinicon River built?

It was built in 1984, making it 41 years old in 2025.

What condition is Ia 346 over Wapsipinicon River 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 2024.

How much traffic does Ia 346 over Wapsipinicon River carry?

About 1,470 vehicles per day (2022 count), of which roughly 17% are trucks.

How long is Ia 346 over Wapsipinicon River?

The structure is 466 ft (142 m) long with a longest span of 97 ft (29.6 m) and a deck 39 ft wide.

Who owns Ia 346 over Wapsipinicon River?

It is owned by the State Highway Agency.