US Bridges

T 397 over Jud Ditch # 85

Fair

Blue Earth County, Minnesota · 0.1 MI N of JCT TH 30 · Structure no. 95615

Built
1982
43 years old
Condition
Fair
inspected November 2023
Type
Culvert
Concrete
Length
37 ft
2 main spans
Daily traffic
16
1982 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

T 397 over Jud Ditch # 85 is a concrete culvert carrying T 397 over Jud Ditch # 85 in Blue Earth County, Minnesota. It was built in 1982, so it is 43 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 16 vehicles a day, projected to reach 16 by 2029. The structure is 37 ft (11.4 m) long. If it were closed, the detour would be 3.1 mi (5 km).

CarriesT 397
CrossesJud Ditch # 85
Location0.1 MI N of JCT TH 30
RouteCounty Highway 397
Coordinates43.89242, -94.28885
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.4 US tons
Inventory rating39.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length37 ft (11.4 m)
Longest span15 ft (4.5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16 (1982)
Projected traffic16 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 397 over Jud Ditch # 85 built?

It was built in 1982, making it 43 years old in 2025.

What condition is T 397 over Jud Ditch # 85 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 November 2023.

How much traffic does T 397 over Jud Ditch # 85 carry?

About 16 vehicles per day (1982 count).

How long is T 397 over Jud Ditch # 85?

The structure is 37 ft (11.4 m) long with a longest span of 15 ft (4.5 m).

Who owns T 397 over Jud Ditch # 85?

It is owned by the Town or Township Highway Agency.