US Bridges

T 310 over Ditch #17

Good

Clay County, Minnesota · 0.5 MI N of JCT T 243 · Structure no. 14K68

Built
2023
2 years old
Condition
Good
inspected August 2023
Type
Culvert
Concrete
Length
26 ft
2 main spans
Daily traffic
12
2022 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

T 310 over Ditch #17 is a concrete culvert carrying T 310 over Ditch #17 in Clay County, Minnesota. It was built in 2023, so it is 2 years old, younger than the Minnesota average of 38.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 12 vehicles a day, projected to reach 15 by 2042. The structure is 26 ft (7.9 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesT 310
CrossesDitch #17
Location0.5 MI N of JCT T 243
RouteCounty Highway 310
CountyClay County
StateMinnesota
Coordinates46.72495, -96.50511
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert9 ExcellentNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHL 93
Structure length26 ft (7.9 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 traffic12 (2022)
Projected traffic15 by 2042
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was T 310 over Ditch #17 built?

It was built in 2023, making it 2 years old in 2025.

What condition is T 310 over Ditch #17 in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2023.

How much traffic does T 310 over Ditch #17 carry?

About 12 vehicles per day (2022 count).

How long is T 310 over Ditch #17?

The structure is 26 ft (7.9 m) long with a longest span of 12 ft (3.7 m).

Who owns T 310 over Ditch #17?

It is owned by the Town or Township Highway Agency.