US Bridges

T 260 over Little Isabella River

FairPosted for load

Lake County, Minnesota · 0.7 MI N of JCT TH 1 · Structure no. L1291

Built
1952
73 years old
Condition
Fair
inspected June 2023
Type
Slab
Concrete
Length
27 ft
1 main span
Daily traffic
52
1973 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

T 260 over Little Isabella River is a concrete slab carrying T 260 over Little Isabella River in Lake County, Minnesota. It was built in 1952, so it is 73 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. Its operating status is: posted for load restriction.

It carries about 52 vehicles a day, projected to reach 52 by 2029. The structure is 27 ft (8.1 m) long and 26 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

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CarriesT 260
CrossesLittle Isabella River
Location0.7 MI N of JCT TH 1
RouteCounty Highway 260
CountyLake County
StateMinnesota
Coordinates47.65618, -91.45643
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating74.8 US tons
Inventory rating46.7 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length27 ft (8.1 m)
Longest span24 ft (7.3 m)
Deck width26 ft (7.9 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic52 (1973)
Projected traffic52 by 2029
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 260 over Little Isabella River built?

It was built in 1952, making it 73 years old in 2025.

What condition is T 260 over Little Isabella 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 June 2023.

How much traffic does T 260 over Little Isabella River carry?

About 52 vehicles per day (1973 count).

How long is T 260 over Little Isabella River?

The structure is 27 ft (8.1 m) long with a longest span of 24 ft (7.3 m) and a deck 26 ft wide.

Who owns T 260 over Little Isabella River?

It is owned by the Town or Township Highway Agency.