US Bridges

Washington ST over Iowa River

FairPosted for load

Hardin County, Iowa · 000000000 · Structure no. 000000000027000

Built
1934
91 years old
Condition
Fair
inspected May 2024
Type
Arch - Deck
Concrete Continuous
Length
380 ft
2 main spans
Daily traffic
6,251
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Washington ST over Iowa River is a concrete continuous arch - deck carrying Washington ST over Iowa River in Hardin County, Iowa. It was built in 1934, so it is 91 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 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 6,251 vehicles a day, projected to reach 6,251 by 2044. The structure is 380 ft (115.8 m) long and 38 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesWashington ST
CrossesIowa River
Location000000000
RouteCity Street 0
CountyHardin County
StateIowa
Coordinates42.51963, -93.27143
Functional classUrban 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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating51 US tons
Inventory rating30 US tons

Structure

Structure typeArch - Deck
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2 (+1 approach)
Design loadH 15
Structure length380 ft (115.8 m)
Longest span173 ft (52.7 m)
Deck width38 ft (11.6 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,251 (2022)
Projected traffic6,251 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusListed on the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Washington ST over Iowa River built?

It was built in 1934, making it 91 years old in 2025.

What condition is Washington ST over Iowa 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 Washington ST over Iowa River carry?

About 6,251 vehicles per day (2022 count).

How long is Washington ST over Iowa River?

The structure is 380 ft (115.8 m) long with a longest span of 173 ft (52.7 m) and a deck 38 ft wide.

Who owns Washington ST over Iowa River?

It is owned by the City or Municipal Highway Agency.