US Bridges

FM over Upper Iowa River Branch

Fair

Winneshiek County, Iowa · 099101302 · Structure no. 000000000349090

Built
1962
63 years old
Condition
Fair
inspected March 2023
Type
Culvert
Concrete Continuous
Length
24 ft
2 main spans
Daily traffic
79
2022 count
Owner
County
County Highway Agency

About this bridge

FM over Upper Iowa River Branch is a concrete continuous culvert carrying FM over Upper Iowa River Branch in Winneshiek County, Iowa. It was built in 1962, so it is 63 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 79 vehicles a day, projected to reach 79 by 2043. The structure is 24 ft (7.3 m) long and 31 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesFM
CrossesUpper Iowa River Branch
Location099101302
RouteCounty Highway 0
CountyWinneshiek County
StateIowa
Coordinates43.38936, -91.9886
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 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 geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating37.8 US tons
Inventory rating22.6 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length24 ft (7.3 m)
Longest span12 ft (3.7 m)
Deck width31 ft (9.5 m)
Roadway width31 ft (9.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic79 (2022)
Projected traffic79 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 Branch built?

It was built in 1962, making it 63 years old in 2025.

What condition is FM over Upper Iowa River Branch 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 FM over Upper Iowa River Branch carry?

About 79 vehicles per day (2022 count).

How long is FM over Upper Iowa River Branch?

The structure is 24 ft (7.3 m) long with a longest span of 12 ft (3.7 m) and a deck 31 ft wide.

Who owns FM over Upper Iowa River Branch?

It is owned by the County Highway Agency.