US Bridges

US 30 over Wapsipinicon River

Fair

Clinton County, Iowa · 1.0 Mi. E of SR Y4E · Structure no. 000000000020730

Built
1955
70 years old
Condition
Fair
inspected May 2024
Type
Slab
Concrete Continuous
Length
197 ft
5 main spans
Daily traffic
2,550
2022 count
Owner
State
State Highway Agency

About this bridge

US 30 over Wapsipinicon River is a concrete continuous slab carrying US 30 over Wapsipinicon River in Clinton County, Iowa. It was built in 1955, so it is 70 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 5 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 2,550 vehicles a day, roughly 21% of them trucks, projected to reach 2,550 by 2042. The structure is 197 ft (60 m) long and 35 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesUS 30
CrossesWapsipinicon River
Location1.0 Mi. E of SR Y4E
RouteU.S. Route 30
CountyClinton County
StateIowa
Coordinates41.82914, -90.822
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating52 US tons
Inventory rating31 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadH 20
Structure length197 ft (60 m)
Longest span43 ft (13.1 m)
Deck width35 ft (10.6 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,550 (2022)
Projected traffic2,550 by 2042
Trucks21%
Lanes on structure2
Traffic directionTwo-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 30 over Wapsipinicon River built?

It was built in 1955, making it 70 years old in 2025.

What condition is US 30 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 May 2024.

How much traffic does US 30 over Wapsipinicon River carry?

About 2,550 vehicles per day (2022 count), of which roughly 21% are trucks.

How long is US 30 over Wapsipinicon River?

The structure is 197 ft (60 m) long with a longest span of 43 ft (13.1 m) and a deck 35 ft wide.

Who owns US 30 over Wapsipinicon River?

It is owned by the State Highway Agency.