US Bridges

T 347 over CO Ditch # 7

Fair

Polk County, Minnesota · 2.5 MI W of JCT Csah 20 · Structure no. 60J18

Built
1998
27 years old
Condition
Fair
inspected October 2023
Type
Culvert
Concrete
Length
30 ft
2 main spans
Daily traffic
10
1973 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

T 347 over CO Ditch # 7 is a concrete culvert carrying T 347 over CO Ditch # 7 in Polk County, Minnesota. It was built in 1998, so it is 27 years old, younger 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 10 vehicles a day, projected to reach 10 by 2029. The structure is 30 ft (9.1 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesT 347
CrossesCO Ditch # 7
Location2.5 MI W of JCT Csah 20
RouteCounty Highway 347
CountyPolk County
StateMinnesota
Coordinates48.10817, -96.83594
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.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 48 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 rating64.8 US tons
Inventory rating43.2 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 25 or greater
Structure length30 ft (9.1 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (1973)
Projected traffic10 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 347 over CO Ditch # 7 built?

It was built in 1998, making it 27 years old in 2025.

What condition is T 347 over CO Ditch # 7 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 347 over CO Ditch # 7 carry?

About 10 vehicles per day (1973 count).

How long is T 347 over CO Ditch # 7?

The structure is 30 ft (9.1 m) long with a longest span of 12 ft (3.7 m).

Who owns T 347 over CO Ditch # 7?

It is owned by the Town or Township Highway Agency.