US Bridges

T 87 over Trout Brook

Good

Wabasha County, Minnesota · 0.3 MI S of JCT CR 83 · Structure no. 79518

Built
1978
47 years old
Condition
Good
inspected October 2024
Type
Tee Beam
Prestressed Concrete
Length
122 ft
3 main spans
Daily traffic
25
1986 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

T 87 over Trout Brook is a prestressed concrete tee beam carrying T 87 over Trout Brook in Wabasha County, Minnesota. It was built in 1978, so it is 47 years old, older than the Minnesota average of 38.5 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.

It carries about 25 vehicles a day, projected to reach 25 by 2029. The structure is 122 ft (37.1 m) long and 32 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesT 87
CrossesTrout Brook
Location0.3 MI S of JCT CR 83
RouteCounty Highway 87
Coordinates44.29923, -92.53161
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating79 US tons
Inventory rating46.4 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length122 ft (37.1 m)
Longest span40 ft (12.2 m)
Deck width32 ft (9.8 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (1986)
Projected traffic25 by 2029
Trucks—
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

OwnerTown or Township Highway Agency
Maintained byTown or Township 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 T 87 over Trout Brook built?

It was built in 1978, making it 47 years old in 2025.

What condition is T 87 over Trout Brook 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 October 2024.

How much traffic does T 87 over Trout Brook carry?

About 25 vehicles per day (1986 count).

How long is T 87 over Trout Brook?

The structure is 122 ft (37.1 m) long with a longest span of 40 ft (12.2 m) and a deck 32 ft wide.

Who owns T 87 over Trout Brook?

It is owned by the Town or Township Highway Agency.