US Bridges

T 315 over Stream

Fair

Winona County, Minnesota · 0.2 MI S of JCT Csah 15 · Structure no. L1490

Built
1915
110 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
20 ft
1 main span
Daily traffic
6
1986 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

T 315 over Stream is a wood or timber stringer/multi-beam or girder carrying T 315 over Stream in Winona County, Minnesota. It was built in 1915, so it is 110 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 6 vehicles a day, projected to reach 6 by 2029. The structure is 20 ft (6.2 m) long and 17 ft wide. If it were closed, the detour would be 123 mi (198 km).

Location

Open in Google Maps
CarriesT 315
CrossesStream
Location0.2 MI S of JCT Csah 15
RouteCounty Highway 315
CountyWinona County
StateMinnesota
Coordinates44.01954, -91.56112
Functional classUrban 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
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
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating50.9 US tons
Inventory rating37.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHS 20
Structure length20 ft (6.2 m)
Longest span15 ft (4.6 m)
Deck width17 ft (5.3 m)
Roadway width15 ft (4.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6 (1986)
Projected traffic6 by 2029
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123 mi (198 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$45 million
NavigationNo navigation control on waterway

Frequently asked questions

When was T 315 over Stream built?

It was built in 1915, making it 110 years old in 2025.

What condition is T 315 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 October 2023.

How much traffic does T 315 over Stream carry?

About 6 vehicles per day (1986 count).

How long is T 315 over Stream?

The structure is 20 ft (6.2 m) long with a longest span of 15 ft (4.6 m) and a deck 17 ft wide.

Who owns T 315 over Stream?

It is owned by the Town or Township Highway Agency.