US Bridges

Csah 15 over Stream

Good

Watonwan County, Minnesota · 1.0 MI S of JCT Csah 57 · Structure no. 93258

Built
1977
48 years old
Condition
Good
inspected October 2022
Type
Culvert
Concrete
Length
29 ft
2 main spans
Daily traffic
235
2016 count
Owner
County
County Highway Agency

About this bridge

Csah 15 over Stream is a concrete culvert carrying Csah 15 over Stream in Watonwan County, Minnesota. It was built in 1977, so it is 48 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 235 vehicles a day, projected to reach 235 by 2035. The structure is 29 ft (8.9 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesCsah 15
CrossesStream
Location1.0 MI S of JCT Csah 57
RouteCounty Highway 15
CountyWatonwan County
StateMinnesota
Coordinates43.95858, -94.63951
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionOctober 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.4 US tons
Inventory rating39.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length29 ft (8.9 m)
Longest span11 ft (3.5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic235 (2016)
Projected traffic235 by 2035
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Csah 15 over Stream built?

It was built in 1977, making it 48 years old in 2025.

What condition is Csah 15 over Stream 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 October 2022.

How much traffic does Csah 15 over Stream carry?

About 235 vehicles per day (2016 count).

How long is Csah 15 over Stream?

The structure is 29 ft (8.9 m) long with a longest span of 11 ft (3.5 m).

Who owns Csah 15 over Stream?

It is owned by the County Highway Agency.