US Bridges

I 35 over TH 45

Fair

Carlton County, Minnesota · At JCT TH 45; TH 35 · Structure no. 09806

Built
1965
60 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
162 ft
2 main spans
Daily traffic
10,305
2022 count
Owner
State
State Highway Agency

About this bridge

I 35 over TH 45 is a steel continuous stringer/multi-beam or girder carrying I 35 over TH 45 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 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 10,305 vehicles a day, roughly 13% of them trucks, projected to reach 9,750 by 2042. The structure is 162 ft (49.5 m) long and 45 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI 35
CrossesTH 45
LocationAt JCT TH 45; TH 35
RouteInterstate 35
CountyCarlton County
StateMinnesota
Coordinates46.69948, -92.42691
Functional classUrban 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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2024
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 geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.1 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length162 ft (49.5 m)
Longest span82 ft (25.1 m)
Deck width45 ft (13.6 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,305 (2022)
Projected traffic9,750 by 2042
Trucks13%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 35 over TH 45 built?

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

What condition is I 35 over TH 45 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 June 2024.

How much traffic does I 35 over TH 45 carry?

About 10,305 vehicles per day (2022 count), of which roughly 13% are trucks.

How long is I 35 over TH 45?

The structure is 162 ft (49.5 m) long with a longest span of 82 ft (25.1 m) and a deck 45 ft wide.

Who owns I 35 over TH 45?

It is owned by the State Highway Agency.