US Bridges

FM over Upper Iowa River Branch

Fair

Winneshiek County, Iowa · 099101802 · Structure no. 000000000349125

Built
1971
54 years old
Condition
Fair
inspected March 2023
Type
Channel Beam
Concrete
Length
62 ft
2 main spans
Daily traffic
118
2022 count
Owner
County
County Highway Agency

About this bridge

FM over Upper Iowa River Branch is a concrete channel beam carrying FM over Upper Iowa River Branch in Winneshiek County, Iowa. It was built in 1971, so it is 54 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 118 vehicles a day, projected to reach 118 by 2043. The structure is 62 ft (18.9 m) long and 29 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesFM
CrossesUpper Iowa River Branch
Location099101802
RouteCounty Highway 0
CountyWinneshiek County
StateIowa
Coordinates43.39662, -92.08022
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating36 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length62 ft (18.9 m)
Longest span31 ft (9.4 m)
Deck width29 ft (8.8 m)
Roadway width27 ft (8.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic118 (2022)
Projected traffic118 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 1971, making it 54 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 118 vehicles per day (2022 count).

How long is FM over Upper Iowa River Branch?

The structure is 62 ft (18.9 m) long with a longest span of 31 ft (9.4 m) and a deck 29 ft wide.

Who owns FM over Upper Iowa River Branch?

It is owned by the County Highway Agency.