US Bridges

FM over Upper Iowa River

Good

Winneshiek County, Iowa · 098070709 · Structure no. 000000000347271

Built
2005
20 years old
Condition
Good
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
304 ft
3 main spans
Daily traffic
471
2022 count
Owner
County
County Highway Agency

About this bridge

FM over Upper Iowa River is a steel continuous stringer/multi-beam or girder carrying FM over Upper Iowa River in Winneshiek County, Iowa. It was built in 2005, so it is 20 years old, younger than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 471 vehicles a day, roughly 13% of them trucks, projected to reach 471 by 2043. The structure is 304 ft (92.7 m) long and 32 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

CarriesFM
CrossesUpper Iowa River
Location098070709
RouteCounty Highway 0
StateIowa
Coordinates43.31866, -91.71534
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
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 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 alignment6: Equal to present minimum criteria
Operating rating27.9 US tons
Inventory rating21.4 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 15
Structure length304 ft (92.7 m)
Longest span117 ft (35.7 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic471 (2022)
Projected traffic471 by 2043
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM over Upper Iowa River built?

It was built in 2005, making it 20 years old in 2025.

What condition is FM over Upper Iowa River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in April 2023.

How much traffic does FM over Upper Iowa River carry?

About 471 vehicles per day (2022 count), of which roughly 13% are trucks.

How long is FM over Upper Iowa River?

The structure is 304 ft (92.7 m) long with a longest span of 117 ft (35.7 m) and a deck 32 ft wide.

Who owns FM over Upper Iowa River?

It is owned by the County Highway Agency.