US Bridges

T 727 over Big Cobb River

Fair

Waseca County, Minnesota · 2.1 MI S of JCT TH 30 · Structure no. 95120

Built
1981
44 years old
Condition
Fair
inspected October 2024
Type
Culvert
Concrete
Length
50 ft
3 main spans
Daily traffic
50
1981 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

T 727 over Big Cobb River is a concrete culvert carrying T 727 over Big Cobb River in Waseca County, Minnesota. It was built in 1981, so it is 44 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 5 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 50 vehicles a day, projected to reach 50 by 2029. The structure is 50 ft (15.3 m) long. If it were closed, the detour would be 3.1 mi (5 km).

CarriesT 727
CrossesBig Cobb River
Location2.1 MI S of JCT TH 30
RouteCounty Highway 727
Coordinates43.86115, -93.76788
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating59.4 US tons
Inventory rating39.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length50 ft (15.3 m)
Longest span14 ft (4.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (1981)
Projected traffic50 by 2029
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 727 over Big Cobb River built?

It was built in 1981, making it 44 years old in 2025.

What condition is T 727 over Big Cobb 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 October 2024.

How much traffic does T 727 over Big Cobb River carry?

About 50 vehicles per day (1981 count).

How long is T 727 over Big Cobb River?

The structure is 50 ft (15.3 m) long with a longest span of 14 ft (4.3 m).

Who owns T 727 over Big Cobb River?

It is owned by the Town or Township Highway Agency.