US Bridges

Mn 336 over Usth 10

Fair

Clay County, Minnesota · At the JCT TH 10; TH 336 · Structure no. 14013

Built
2002
23 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
237 ft
2 main spans
Daily traffic
11,100
2020 count
Owner
State
State Highway Agency

About this bridge

Mn 336 over Usth 10 is a prestressed concrete stringer/multi-beam or girder carrying Mn 336 over Usth 10 in Clay County, Minnesota. It was built in 2002, so it is 23 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 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 11,100 vehicles a day, roughly 21% of them trucks, projected to reach 10,900 by 2040. The structure is 237 ft (72.1 m) long and 101 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

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CarriesMn 336
CrossesUsth 10
LocationAt the JCT TH 10; TH 336
RouteState Highway 336
CountyClay County
StateMinnesota
Coordinates46.87673, -96.64958
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating90.3 US tons
Inventory rating54.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length237 ft (72.1 m)
Longest span120 ft (36.6 m)
Deck width101 ft (30.9 m)
Roadway width84 ft (25.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,100 (2020)
Projected traffic10,900 by 2040
Trucks21%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemYes

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Mn 336 over Usth 10 built?

It was built in 2002, making it 23 years old in 2025.

What condition is Mn 336 over Usth 10 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 September 2023.

How much traffic does Mn 336 over Usth 10 carry?

About 11,100 vehicles per day (2020 count), of which roughly 21% are trucks.

How long is Mn 336 over Usth 10?

The structure is 237 ft (72.1 m) long with a longest span of 120 ft (36.6 m) and a deck 101 ft wide.

Who owns Mn 336 over Usth 10?

It is owned by the State Highway Agency.