US Bridges

Mn 33 over I 35

Fair

Carlton County, Minnesota · At JCT TH 33; TH 35 · Structure no. 09801

Built
1965
60 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
364 ft
4 main spans
Daily traffic
16,100
2016 count
Owner
State
State Highway Agency

About this bridge

Mn 33 over I 35 is a steel continuous stringer/multi-beam or girder carrying Mn 33 over I 35 in Carlton County, Minnesota. It was built in 1965, so it is 60 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 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 16,100 vehicles a day, roughly 4% of them trucks, projected to reach 8,050 by 2036. The structure is 364 ft (110.9 m) long and 36 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesMn 33
CrossesI 35
LocationAt JCT TH 33; TH 35
RouteState Highway 33
CountyCarlton County
StateMinnesota
Coordinates46.68954, -92.45705
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66.1 US tons
Inventory rating39.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length364 ft (110.9 m)
Longest span108 ft (33 m)
Deck width36 ft (10.9 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,100 (2016)
Projected traffic8,050 by 2036
Trucks4%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed5 mi (8 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 33 over I 35 built?

It was built in 1965, making it 60 years old in 2025.

What condition is Mn 33 over I 35 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 April 2024.

How much traffic does Mn 33 over I 35 carry?

About 16,100 vehicles per day (2016 count), of which roughly 4% are trucks.

How long is Mn 33 over I 35?

The structure is 364 ft (110.9 m) long with a longest span of 108 ft (33 m) and a deck 36 ft wide.

Who owns Mn 33 over I 35?

It is owned by the State Highway Agency.