US Bridges

FM over Upper Iowa River

Fair

Winneshiek County, Iowa · 098070705 · Structure no. 000000000347290

Built
1967
58 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
300 ft
4 main spans
Daily traffic
265
2022 count
Owner
County
County Highway Agency

About this bridge

FM over Upper Iowa River is a prestressed concrete stringer/multi-beam or girder carrying FM over Upper Iowa River in Winneshiek County, Iowa. It was built in 1967, so it is 58 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.

It carries about 265 vehicles a day, projected to reach 265 by 2043. The structure is 300 ft (91.4 m) long and 30 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesFM
CrossesUpper Iowa River
Location098070705
RouteCounty Highway 0
CountyWinneshiek County
StateIowa
Coordinates43.3222, -91.71024
Functional classRural Minor Collector

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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.9 US tons
Inventory rating38.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadH 20
Structure length300 ft (91.4 m)
Longest span81 ft (24.7 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic265 (2022)
Projected traffic265 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM over Upper Iowa River built?

It was built in 1967, making it 58 years old in 2025.

What condition is FM over Upper 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 April 2023.

How much traffic does FM over Upper Iowa River carry?

About 265 vehicles per day (2022 count).

How long is FM over Upper Iowa River?

The structure is 300 ft (91.4 m) long with a longest span of 81 ft (24.7 m) and a deck 30 ft wide.

Who owns FM over Upper Iowa River?

It is owned by the County Highway Agency.