US Bridges

Csah 15 over Trib Split Rock Creek

Poor

Pipestone County, Minnesota · 1.5 MI S of JCT Csah 4 · Structure no. L3592

Built
1930
95 years old
Condition
Poor
inspected May 2024
Type
Culvert
Concrete
Length
22 ft
2 main spans
Daily traffic
205
2016 count
Owner
County
County Highway Agency

About this bridge

Csah 15 over Trib Split Rock Creek is a concrete culvert carrying Csah 15 over Trib Split Rock Creek in Pipestone County, Minnesota. It was built in 1930, so it is 95 years old, older than the Minnesota average of 38.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 205 vehicles a day, projected to reach 205 by 2039. The structure is 22 ft (6.6 m) long. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesCsah 15
CrossesTrib Split Rock Creek
Location1.5 MI S of JCT Csah 4
RouteCounty Highway 15
CountyPipestone County
StateMinnesota
Coordinates43.94388, -96.32751
Functional classRural Minor Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Culvert4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.9 US tons
Inventory rating29.3 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadUnknown
Structure length22 ft (6.6 m)
Longest span11 ft (3.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic205 (2016)
Projected traffic205 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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$310 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Csah 15 over Trib Split Rock Creek built?

It was built in 1930, making it 95 years old in 2025.

What condition is Csah 15 over Trib Split Rock Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in May 2024.

How much traffic does Csah 15 over Trib Split Rock Creek carry?

About 205 vehicles per day (2016 count).

How long is Csah 15 over Trib Split Rock Creek?

The structure is 22 ft (6.6 m) long with a longest span of 11 ft (3.4 m).

Who owns Csah 15 over Trib Split Rock Creek?

It is owned by the County Highway Agency.