US Bridges

T 312 over Stream

Fair

Fillmore County, Minnesota · 1.4 MI W of JCT TH 63 · Structure no. R0103

Built
1986
39 years old
Condition
Fair
inspected March 2023
Type
Culvert
Concrete
Length
29 ft
2 main spans
Daily traffic
14
1986 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

T 312 over Stream is a concrete culvert carrying T 312 over Stream in Fillmore County, Minnesota. It was built in 1986, so it is 39 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 14 vehicles a day, projected to reach 14 by 2029. The structure is 29 ft (8.9 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesT 312
CrossesStream
Location1.4 MI W of JCT TH 63
RouteCounty Highway 312
CountyFillmore County
StateMinnesota
Coordinates43.52957, -92.39667
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 inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than 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 length29 ft (8.9 m)
Longest span11 ft (3.5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14 (1986)
Projected traffic14 by 2029
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 312 over Stream built?

It was built in 1986, making it 39 years old in 2025.

What condition is T 312 over Stream 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 March 2023.

How much traffic does T 312 over Stream carry?

About 14 vehicles per day (1986 count).

How long is T 312 over Stream?

The structure is 29 ft (8.9 m) long with a longest span of 11 ft (3.5 m).

Who owns T 312 over Stream?

It is owned by the Town or Township Highway Agency.