US Bridges

Csah 12 over Stream

Fair

Mower County, Minnesota · 0.4 MI S of JCT TH 56 · Structure no. 91394

Built
1977
48 years old
Condition
Fair
inspected July 2023
Type
Culvert
Concrete
Length
44 ft
3 main spans
Daily traffic
1,100
2016 count
Owner
County
County Highway Agency

About this bridge

Csah 12 over Stream is a concrete culvert carrying Csah 12 over Stream in Mower 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 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 1,100 vehicles a day, projected to reach 1,100 by 2039. The structure is 44 ft (13.5 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesCsah 12
CrossesStream
Location0.4 MI S of JCT TH 56
RouteCounty Highway 12
CountyMower County
StateMinnesota
Coordinates43.50451, -92.49902
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
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 rating43.2 US tons
Inventory rating32.4 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length44 ft (13.5 m)
Longest span13 ft (3.9 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,100 (2016)
Projected traffic1,100 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 12 over Stream built?

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

What condition is Csah 12 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 July 2023.

How much traffic does Csah 12 over Stream carry?

About 1,100 vehicles per day (2016 count).

How long is Csah 12 over Stream?

The structure is 44 ft (13.5 m) long with a longest span of 13 ft (3.9 m).

Who owns Csah 12 over Stream?

It is owned by the County Highway Agency.