FM over Trout Run Creek Branch

GoodPosted for load

Winneshiek County, Iowa · 097081009 · Structure no. 000000000346791

Built: 1943; 82 years old
Condition: Good; inspected April 2023
Type: Slab; Concrete Continuous
Length: 91 ft; 3 main spans
Daily traffic: 108; 2022 count
Owner: County; County Highway Agency

About this bridge

FM over Trout Run Creek Branch is a concrete continuous slab carrying FM over Trout Run Creek Branch in Winneshiek County, Iowa. It was built in 1943, so it is 82 years old, older 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. Its operating status is: posted for load restriction.

It carries about 108 vehicles a day, projected to reach 108 by 2043. The structure is 91 ft (27.7 m) long and 20 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesFM

CrossesTrout Run Creek Branch

Location097081009

RouteCounty Highway 0

CountyWinneshiek County

StateIowa

Coordinates43.23445, -91.77274

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.

Component	Rating	Meaning
Deck	7 Good	Some minor problems.
Superstructure	7 Good	Some minor problems.
Substructure	7 Good	Some minor problems.
Channel and channel protection	7 Good	Some minor problems.

Last inspectionApril 2023

Inspection intervalevery 24 months

Operating statusPosted for load restriction

ScourFoundations stable; scour above top of footing

Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is

Deck geometry2: Basically intolerable, requiring high priority of replacement

Waterway adequacy7: Better than present minimum criteria

Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action

Operating rating35.6 US tons

Inventory rating21.3 US tons

Structure

Structure typeSlab

MaterialConcrete Continuous

DeckConcrete, cast-in-place

Main spans3

Design loadH 15

Structure length91 ft (27.7 m)

Longest span35 ft (10.7 m)

Deck width20 ft (6 m)

Roadway width17 ft (5.2 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic108 (2022)

Projected traffic108 by 2043

Trucks0%

Lanes on structure2

Traffic directionTwo-way traffic

CarriesHighway

CrossesWaterway

Detour if closed3.7 mi (6 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 Trout Run Creek Branch built?

It was built in 1943, making it 82 years old in 2025.

What condition is FM over Trout Run Creek Branch 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 Trout Run Creek Branch carry?

About 108 vehicles per day (2022 count).

How long is FM over Trout Run Creek Branch?

The structure is 91 ft (27.7 m) long with a longest span of 35 ft (10.7 m) and a deck 20 ft wide.

Who owns FM over Trout Run Creek Branch?

It is owned by the County Highway Agency.