US Bridges

Csah 43 over I 35

Fair

Pine County, Minnesota · JCT CSAH43 Willow River · Structure no. 58810

Built
1964
61 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
212 ft
4 main spans
Daily traffic
2,328
2021 count
Owner
State
State Highway Agency

About this bridge

Csah 43 over I 35 is a prestressed concrete stringer/multi-beam or girder carrying Csah 43 over I 35 in Pine County, Minnesota. It was built in 1964, so it is 61 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 2,328 vehicles a day, projected to reach 2,100 by 2041. The structure is 212 ft (64.5 m) long and 36 ft wide.

CarriesCsah 43
CrossesI 35
LocationJCT CSAH43 Willow River
RouteCounty Highway 43
Coordinates46.317, -92.82799
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 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 rating72 US tons
Inventory rating43 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length212 ft (64.5 m)
Longest span67 ft (20.4 m)
Deck width36 ft (10.9 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,328 (2021)
Projected traffic2,100 by 2041
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 43 over I 35 built?

It was built in 1964, making it 61 years old in 2025.

What condition is Csah 43 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 43 over I 35 carry?

About 2,328 vehicles per day (2021 count).

How long is Csah 43 over I 35?

The structure is 212 ft (64.5 m) long with a longest span of 67 ft (20.4 m) and a deck 36 ft wide.

Who owns Csah 43 over I 35?

It is owned by the State Highway Agency.