US Bridges

Mn 74 over Trout Creek

Fair

Winona County, Minnesota · At Troy · Structure no. 8858

Built
1956
69 years old
Condition
Fair
inspected June 2024
Type
Culvert
Concrete
Length
38 ft
2 main spans
Daily traffic
948
2022 count
Owner
State
State Highway Agency

About this bridge

Mn 74 over Trout Creek is a concrete culvert carrying Mn 74 over Trout Creek in Winona County, Minnesota. It was built in 1956, so it is 69 years old, older than the Minnesota average of 38.5 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 948 vehicles a day, roughly 16% of them trucks, projected to reach 790 by 2042. The structure is 38 ft (11.6 m) long. If it were closed, the detour would be 24.2 mi (39 km).

Location

Open in Google Maps
CarriesMn 74
CrossesTrout Creek
LocationAt Troy
RouteState Highway 74
CountyWinona County
StateMinnesota
Coordinates43.87148, -92.06922
Functional classRural Major 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.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2024
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
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43.2 US tons
Inventory rating32.4 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadH 20
Structure length38 ft (11.6 m)
Longest span17 ft (5.2 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic948 (2022)
Projected traffic790 by 2042
Trucks16%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed24.2 mi (39 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost$184 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Mn 74 over Trout Creek built?

It was built in 1956, making it 69 years old in 2025.

What condition is Mn 74 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 June 2024.

How much traffic does Mn 74 over Trout Creek carry?

About 948 vehicles per day (2022 count), of which roughly 16% are trucks.

How long is Mn 74 over Trout Creek?

The structure is 38 ft (11.6 m) long with a longest span of 17 ft (5.2 m).

Who owns Mn 74 over Trout Creek?

It is owned by the State Highway Agency.