US Bridges

Csah 4 over Stream

Fair

Rock County, Minnesota · 0.5 MI W of JCT CR 52 · Structure no. 6058

Built
1927
98 years old
Condition
Fair
inspected October 2024
Type
Culvert
Concrete
Length
22 ft
2 main spans
Daily traffic
590
2018 count
Owner
County
County Highway Agency

About this bridge

Csah 4 over Stream is a concrete culvert carrying Csah 4 over Stream in Rock County, Minnesota. It was built in 1927, so it is 98 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 590 vehicles a day, projected to reach 550 by 2038. The structure is 22 ft (6.7 m) long. If it were closed, the detour would be 6.8 mi (11 km).

CarriesCsah 4
CrossesStream
Location0.5 MI W of JCT CR 52
RouteCounty Highway 4
Coordinates43.59521, -96.40091
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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.9 US tons
Inventory rating29.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadUnknown
Structure length22 ft (6.7 m)
Longest span10 ft (3.2 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic590 (2018)
Projected traffic550 by 2038
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Csah 4 over Stream built?

It was built in 1927, making it 98 years old in 2025.

What condition is Csah 4 over Stream 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 October 2024.

How much traffic does Csah 4 over Stream carry?

About 590 vehicles per day (2018 count).

How long is Csah 4 over Stream?

The structure is 22 ft (6.7 m) long with a longest span of 10 ft (3.2 m).

Who owns Csah 4 over Stream?

It is owned by the County Highway Agency.