US Bridges

Csah 39 over Mississippi River

Good

Beltrami County, Minnesota · 3.2 MI N of S CO Line · Structure no. 7198

Built
1959
66 years old
Condition
Good
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
183 ft
3 main spans
Daily traffic
501
2022 count
Owner
County
County Highway Agency

About this bridge

Csah 39 over Mississippi River is a prestressed concrete stringer/multi-beam or girder carrying Csah 39 over Mississippi River in Beltrami County, Minnesota. It was built in 1959, so it is 66 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 501 vehicles a day, projected to reach 420 by 2042. The structure is 183 ft (55.8 m) long and 32 ft wide. If it were closed, the detour would be 16.2 mi (26 km).

CarriesCsah 39
CrossesMississippi River
Location3.2 MI N of S CO Line
RouteCounty Highway 39
Coordinates47.4546, -94.47466
Functional classRural Major Collector

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.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69.4 US tons
Inventory rating34.2 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length183 ft (55.8 m)
Longest span61 ft (18.6 m)
Deck width32 ft (9.9 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic501 (2022)
Projected traffic420 by 2042
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.2 mi (26 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost$796 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Csah 39 over Mississippi River built?

It was built in 1959, making it 66 years old in 2025.

What condition is Csah 39 over Mississippi River 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 September 2024.

How much traffic does Csah 39 over Mississippi River carry?

About 501 vehicles per day (2022 count).

How long is Csah 39 over Mississippi River?

The structure is 183 ft (55.8 m) long with a longest span of 61 ft (18.6 m) and a deck 32 ft wide.

Who owns Csah 39 over Mississippi River?

It is owned by the County Highway Agency.