US Bridges

I 35 over Csah 61

Good

Carlton County, Minnesota · 3.5 MI S of JCT TH 210 · Structure no. 09824

Built
1965
60 years old, rebuilt 2017
Condition
Good
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
309 ft
4 main spans
Daily traffic
9,950
2018 count
Owner
State
State Highway Agency

About this bridge

I 35 over Csah 61 is a steel continuous stringer/multi-beam or girder carrying I 35 over Csah 61 in Carlton County, Minnesota. It was built in 1965 and reconstructed in 2017, 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 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 9,950 vehicles a day, roughly 7% of them trucks, projected to reach 8,850 by 2038. The structure is 309 ft (94.2 m) long and 43 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesI 35
CrossesCsah 61
Location3.5 MI S of JCT TH 210
RouteInterstate 35
Coordinates46.62838, -92.53154
Functional classRural Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating35.1 US tons
Inventory rating26.8 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length309 ft (94.2 m)
Longest span87 ft (26.4 m)
Deck width43 ft (13.1 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,950 (2018)
Projected traffic8,850 by 2038
Trucks7%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed6.2 mi (10 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 Csah 61 built?

It was built in 1965, making it 60 years old in 2025. It was reconstructed in 2017.

What condition is I 35 over Csah 61 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 June 2024.

How much traffic does I 35 over Csah 61 carry?

About 9,950 vehicles per day (2018 count), of which roughly 7% are trucks.

How long is I 35 over Csah 61?

The structure is 309 ft (94.2 m) long with a longest span of 87 ft (26.4 m) and a deck 43 ft wide.

Who owns I 35 over Csah 61?

It is owned by the State Highway Agency.