US Bridges

Csah 46 over I 35

Fair

Pine County, Minnesota · 4.4 MI N of JCT Csah 43 · Structure no. 58814

Built
1965
60 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
231 ft
4 main spans
Daily traffic
1,600
2020 count
Owner
State
State Highway Agency

About this bridge

Csah 46 over I 35 is a steel continuous stringer/multi-beam or girder carrying Csah 46 over I 35 in Pine 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 1,600 vehicles a day, projected to reach 1,700 by 2040. The structure is 231 ft (70.3 m) long and 36 ft wide.

Location

Open in Google Maps
CarriesCsah 46
CrossesI 35
Location4.4 MI N of JCT Csah 43
RouteCounty Highway 46
CountyPine County
StateMinnesota
Coordinates46.37499, -92.79002
Functional classRural Major Collector

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.1 US tons
Inventory rating31.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length231 ft (70.3 m)
Longest span68 ft (20.6 m)
Deck width36 ft (10.9 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,600 (2020)
Projected traffic1,700 by 2040
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemNo

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 Csah 46 over I 35 built?

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

What condition is Csah 46 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 May 2024.

How much traffic does Csah 46 over I 35 carry?

About 1,600 vehicles per day (2020 count).

How long is Csah 46 over I 35?

The structure is 231 ft (70.3 m) long with a longest span of 68 ft (20.6 m) and a deck 36 ft wide.

Who owns Csah 46 over I 35?

It is owned by the State Highway Agency.