US Bridges

T 247 over N Br Root River

Fair

Mower County, Minnesota · 0.6 MI E of JCT Csah 7 · Structure no. 50535

Built
1974
51 years old
Condition
Fair
inspected September 2023
Type
Channel Beam
Prestressed Concrete
Length
81 ft
3 main spans
Daily traffic
28
1986 count
Owner
County
County Highway Agency

About this bridge

T 247 over N Br Root River is a prestressed concrete channel beam carrying T 247 over N Br Root River in Mower County, Minnesota. It was built in 1974, so it is 51 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 28 vehicles a day, projected to reach 28 by 2029. The structure is 81 ft (24.8 m) long and 32 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesT 247
CrossesN Br Root River
Location0.6 MI E of JCT Csah 7
RouteCounty Highway 247
CountyMower County
StateMinnesota
Coordinates43.78961, -92.71862
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 rating75.9 US tons
Inventory rating45.7 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length81 ft (24.8 m)
Longest span31 ft (9.4 m)
Deck width32 ft (9.7 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic28 (1986)
Projected traffic28 by 2029
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 247 over N Br Root River built?

It was built in 1974, making it 51 years old in 2025.

What condition is T 247 over N Br Root River 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 September 2023.

How much traffic does T 247 over N Br Root River carry?

About 28 vehicles per day (1986 count).

How long is T 247 over N Br Root River?

The structure is 81 ft (24.8 m) long with a longest span of 31 ft (9.4 m) and a deck 32 ft wide.

Who owns T 247 over N Br Root River?

It is owned by the County Highway Agency.