US Bridges

Mn 25 over Stony Brook

Fair

Benton County, Minnesota · 1.8 MI S of Foley · Structure no. 8767

Built
1950
75 years old
Condition
Fair
inspected July 2024
Type
Culvert
Concrete
Length
22 ft
2 main spans
Daily traffic
2,550
2019 count
Owner
State
State Highway Agency

About this bridge

Mn 25 over Stony Brook is a concrete culvert carrying Mn 25 over Stony Brook in Benton County, Minnesota. It was built in 1950, so it is 75 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 2,550 vehicles a day, roughly 10% of them trucks, projected to reach 2,800 by 2039. The structure is 22 ft (6.7 m) long. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesMn 25
CrossesStony Brook
Location1.8 MI S of Foley
RouteState Highway 25
CountyBenton County
StateMinnesota
Coordinates45.63749, -93.91462
Functional classRural Minor Arterial

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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
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 loadUnknown
Structure length22 ft (6.7 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,550 (2019)
Projected traffic2,800 by 2039
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Mn 25 over Stony Brook built?

It was built in 1950, making it 75 years old in 2025.

What condition is Mn 25 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 July 2024.

How much traffic does Mn 25 over Stony Brook carry?

About 2,550 vehicles per day (2019 count), of which roughly 10% are trucks.

How long is Mn 25 over Stony Brook?

The structure is 22 ft (6.7 m) long with a longest span of 10 ft (3 m).

Who owns Mn 25 over Stony Brook?

It is owned by the State Highway Agency.