US Bridges

W Main ST over Iowa River

Fair

Wright County, Iowa · 093242501 · Structure no. 000000000000631

Built
1978
47 years old
Condition
Fair
inspected March 2023
Type
Slab
Concrete Continuous
Length
174 ft
4 main spans
Daily traffic
908
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

W Main ST over Iowa River is a concrete continuous slab carrying W Main ST over Iowa River in Wright County, Iowa. It was built in 1978, so it is 47 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 908 vehicles a day, roughly 3% of them trucks, projected to reach 908 by 2043. The structure is 174 ft (53 m) long and 40 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesW Main ST
CrossesIowa River
Location093242501
RouteCity Street 0
CountyWright County
StateIowa
Coordinates42.8459, -93.61787
Functional classRural Local

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65.1 US tons
Inventory rating39 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadH 20
Structure length174 ft (53 m)
Longest span49 ft (14.9 m)
Deck width40 ft (12.2 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic908 (2022)
Projected traffic908 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was W Main ST over Iowa River built?

It was built in 1978, making it 47 years old in 2025.

What condition is W Main 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 March 2023.

How much traffic does W Main ST over Iowa River carry?

About 908 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is W Main ST over Iowa River?

The structure is 174 ft (53 m) long with a longest span of 49 ft (14.9 m) and a deck 40 ft wide.

Who owns W Main ST over Iowa River?

It is owned by the City or Municipal Highway Agency.