US Bridges

FM over Trout Creek

Fair

Winneshiek County, Iowa · 097080504 · Structure no. 000000000346750

Built
1962
63 years old
Condition
Fair
inspected April 2023
Type
Culvert
Concrete Continuous
Length
54 ft
3 main spans
Daily traffic
894
2022 count
Owner
County
County Highway Agency

About this bridge

FM over Trout Creek is a concrete continuous culvert carrying FM over Trout Creek 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 894 vehicles a day, roughly 12% of them trucks, projected to reach 894 by 2043. The structure is 54 ft (16.5 m) long and 36 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesFM
CrossesTrout Creek
Location097080504
RouteCounty Highway 0
CountyWinneshiek County
StateIowa
Coordinates43.25218, -91.80804
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 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 geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating27 US tons
Inventory rating20 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length54 ft (16.5 m)
Longest span18 ft (5.5 m)
Deck width36 ft (11 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic894 (2022)
Projected traffic894 by 2043
Trucks12%
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 Trout Creek built?

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

What condition is FM over Trout Creek 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 Trout Creek carry?

About 894 vehicles per day (2022 count), of which roughly 12% are trucks.

How long is FM over Trout Creek?

The structure is 54 ft (16.5 m) long with a longest span of 18 ft (5.5 m) and a deck 36 ft wide.

Who owns FM over Trout Creek?

It is owned by the County Highway Agency.