US Bridges

Mn 310 over Drainage Swale

Good

Roseau County, Minnesota · 6.0 MI N of JCT TH 11 · Structure no. 68X08

Built
2013
12 years old
Condition
Good
inspected October 2022
Type
Culvert
Concrete
Length
31 ft
2 main spans
Daily traffic
350
2018 count
Owner
State
State Highway Agency

About this bridge

Mn 310 over Drainage Swale is a concrete culvert carrying Mn 310 over Drainage Swale in Roseau County, Minnesota. It was built in 2013, so it is 12 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 350 vehicles a day, roughly 10% of them trucks, projected to reach 345 by 2038. The structure is 31 ft (9.5 m) long. If it were closed, the detour would be 26.7 mi (43 km).

Location

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CarriesMn 310
CrossesDrainage Swale
Location6.0 MI N of JCT TH 11
RouteState Highway 310
CountyRoseau County
StateMinnesota
Coordinates48.93573, -95.7687
Functional classRural Minor Arterial

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 protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionOctober 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum 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 length31 ft (9.5 m)
Longest span14 ft (4.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic350 (2018)
Projected traffic345 by 2038
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed26.7 mi (43 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Mn 310 over Drainage Swale built?

It was built in 2013, making it 12 years old in 2025.

What condition is Mn 310 over Drainage Swale 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 October 2022.

How much traffic does Mn 310 over Drainage Swale carry?

About 350 vehicles per day (2018 count), of which roughly 10% are trucks.

How long is Mn 310 over Drainage Swale?

The structure is 31 ft (9.5 m) long with a longest span of 14 ft (4.3 m).

Who owns Mn 310 over Drainage Swale?

It is owned by the State Highway Agency.