US Bridges

I 35 over Moose Horn River

Fair

Carlton County, Minnesota · 1.8 MI N of JCT TH 27 · Structure no. 09815

Built
1968
57 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
142 ft
3 main spans
Daily traffic
8,200
2016 count
Owner
State
State Highway Agency

About this bridge

I 35 over Moose Horn River is a steel continuous stringer/multi-beam or girder carrying I 35 over Moose Horn River in Carlton County, Minnesota. It was built in 1968, so it is 57 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 8,200 vehicles a day, roughly 7% of them trucks, projected to reach 8,200 by 2036. The structure is 142 ft (43.2 m) long and 41 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

CarriesI 35
CrossesMoose Horn River
Location1.8 MI N of JCT TH 27
RouteInterstate 35
Coordinates46.47741, -92.71345
Functional classRural Principal Arterial - Interstate

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.1 US tons
Inventory rating36 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length142 ft (43.2 m)
Longest span56 ft (17.1 m)
Deck width41 ft (12.5 m)
Roadway width38 ft (11.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,200 (2016)
Projected traffic8,200 by 2036
Trucks7%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 I 35 over Moose Horn River built?

It was built in 1968, making it 57 years old in 2025.

What condition is I 35 over Moose Horn River 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 August 2024.

How much traffic does I 35 over Moose Horn River carry?

About 8,200 vehicles per day (2016 count), of which roughly 7% are trucks.

How long is I 35 over Moose Horn River?

The structure is 142 ft (43.2 m) long with a longest span of 56 ft (17.1 m) and a deck 41 ft wide.

Who owns I 35 over Moose Horn River?

It is owned by the State Highway Agency.