US Bridges

Csah 4 over Des Moines River

Fair

Jackson County, Minnesota · 0.2 MI S of JCT Csah 23 · Structure no. 32501

Built
1965
60 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
201 ft
3 main spans
Daily traffic
260
2016 count
Owner
County
County Highway Agency

About this bridge

Csah 4 over Des Moines River is a steel continuous stringer/multi-beam or girder carrying Csah 4 over Des Moines River in Jackson 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 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 260 vehicles a day, projected to reach 260 by 2039. The structure is 201 ft (61.3 m) long and 31 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesCsah 4
CrossesDes Moines River
Location0.2 MI S of JCT Csah 23
RouteCounty Highway 4
CountyJackson County
StateMinnesota
Coordinates43.52631, -94.91917
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating49.7 US tons
Inventory rating29.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length201 ft (61.3 m)
Longest span75 ft (22.9 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic260 (2016)
Projected traffic260 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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$864 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Csah 4 over Des Moines River built?

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

What condition is Csah 4 over Des Moines River 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 September 2024.

How much traffic does Csah 4 over Des Moines River carry?

About 260 vehicles per day (2016 count).

How long is Csah 4 over Des Moines River?

The structure is 201 ft (61.3 m) long with a longest span of 75 ft (22.9 m) and a deck 31 ft wide.

Who owns Csah 4 over Des Moines River?

It is owned by the County Highway Agency.