US Bridges

Mn 9 over S Br Buffalo River

Good

Wilkin County, Minnesota · 8.7 MI S of Barnesville · Structure no. 8784

Built
1953
72 years old
Condition
Good
inspected August 2023
Type
Culvert
Concrete
Length
22 ft
2 main spans
Daily traffic
811
2022 count
Owner
State
State Highway Agency

About this bridge

Mn 9 over S Br Buffalo River is a concrete culvert carrying Mn 9 over S Br Buffalo River in Wilkin County, Minnesota. It was built in 1953, so it is 72 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 811 vehicles a day, roughly 10% of them trucks, projected to reach 680 by 2042. The structure is 22 ft (6.7 m) long. If it were closed, the detour would be 8.1 mi (13 km).

CarriesMn 9
CrossesS Br Buffalo River
Location8.7 MI S of Barnesville
RouteState Highway 9
Coordinates46.52923, -96.47719
Functional classRural Minor Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 (3.2 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic811 (2022)
Projected traffic680 by 2042
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$118 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Mn 9 over S Br Buffalo River built?

It was built in 1953, making it 72 years old in 2025.

What condition is Mn 9 over S Br Buffalo River 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 August 2023.

How much traffic does Mn 9 over S Br Buffalo River carry?

About 811 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is Mn 9 over S Br Buffalo River?

The structure is 22 ft (6.7 m) long with a longest span of 10 ft (3.2 m).

Who owns Mn 9 over S Br Buffalo River?

It is owned by the State Highway Agency.