US Bridges

Csah 4 over Split Rock Creek

Fair

Pipestone County, Minnesota · 0.1 MI E of JCT TH 23 · Structure no. L3554

Built
1946
79 years old
Condition
Fair
inspected July 2024
Type
Culvert
Concrete
Length
23 ft
2 main spans
Daily traffic
42
2022 count
Owner
County
County Highway Agency

About this bridge

Csah 4 over Split Rock Creek is a concrete culvert carrying Csah 4 over Split Rock Creek in Pipestone County, Minnesota. It was built in 1946, so it is 79 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 5 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 42 vehicles a day, projected to reach 55 by 2042. The structure is 23 ft (6.9 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesCsah 4
CrossesSplit Rock Creek
Location0.1 MI E of JCT TH 23
RouteCounty Highway 4
CountyPipestone County
StateMinnesota
Coordinates43.9652, -96.33212
Functional classRural Minor 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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50 US tons
Inventory rating30 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadUnknown
Structure length23 ft (6.9 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 traffic42 (2022)
Projected traffic55 by 2042
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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$320 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Csah 4 over Split Rock Creek built?

It was built in 1946, making it 79 years old in 2025.

What condition is Csah 4 over Split Rock Creek 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 July 2024.

How much traffic does Csah 4 over Split Rock Creek carry?

About 42 vehicles per day (2022 count).

How long is Csah 4 over Split Rock Creek?

The structure is 23 ft (6.9 m) long with a longest span of 10 ft (3.2 m).

Who owns Csah 4 over Split Rock Creek?

It is owned by the County Highway Agency.