US Bridges

Csah 39 over I 35

Fair

Rice County, Minnesota · 2.9 MI S of JCT TH 60 · Structure no. 66823

Built
1964
61 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
356 ft
6 main spans
Daily traffic
1,050
2020 count
Owner
State
State Highway Agency

About this bridge

Csah 39 over I 35 is a prestressed concrete stringer/multi-beam or girder carrying Csah 39 over I 35 in Rice 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 1,050 vehicles a day, projected to reach 1,100 by 2040. The structure is 356 ft (108.6 m) long and 34 ft wide.

CarriesCsah 39
CrossesI 35
Location2.9 MI S of JCT TH 60
RouteCounty Highway 39
Coordinates44.25443, -93.287
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70 US tons
Inventory rating32.2 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans6
Design loadH 20
Structure length356 ft (108.6 m)
Longest span67 ft (20.5 m)
Deck width34 ft (10.3 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,050 (2020)
Projected traffic1,100 by 2040
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and railroad
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 39 over I 35 built?

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

What condition is Csah 39 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 August 2023.

How much traffic does Csah 39 over I 35 carry?

About 1,050 vehicles per day (2020 count).

How long is Csah 39 over I 35?

The structure is 356 ft (108.6 m) long with a longest span of 67 ft (20.5 m) and a deck 34 ft wide.

Who owns Csah 39 over I 35?

It is owned by the State Highway Agency.