US Bridges

T 47 over Stony Brook

Fair

Benton County, Minnesota · 1.3 MI W of JCT CR 62 · Structure no. 05526

Built
1985
40 years old
Condition
Fair
inspected October 2023
Type
Slab
Wood or Timber
Length
83 ft
3 main spans
Daily traffic
44
1985 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

T 47 over Stony Brook is a wood or timber slab carrying T 47 over Stony Brook in Benton County, Minnesota. It was built in 1985, so it is 40 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 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 44 vehicles a day, projected to reach 44 by 2029. The structure is 83 ft (25.3 m) long and 26 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesT 47
CrossesStony Brook
Location1.3 MI W of JCT CR 62
RouteCounty Highway 47
CountyBenton County
StateMinnesota
Coordinates45.6043, -93.97269
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.7 US tons
Inventory rating42.1 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans3
Design loadHS 20
Structure length83 ft (25.3 m)
Longest span31 ft (9.6 m)
Deck width26 ft (8 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic44 (1985)
Projected traffic44 by 2029
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 47 over Stony Brook built?

It was built in 1985, making it 40 years old in 2025.

What condition is T 47 over Stony Brook 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 October 2023.

How much traffic does T 47 over Stony Brook carry?

About 44 vehicles per day (1985 count).

How long is T 47 over Stony Brook?

The structure is 83 ft (25.3 m) long with a longest span of 31 ft (9.6 m) and a deck 26 ft wide.

Who owns T 47 over Stony Brook?

It is owned by the Town or Township Highway Agency.