US Bridges

Csah 5 over Iosco Creek

Fair

Waseca County, Minnesota · 1.5 MI S of JCT Csah 5 · Structure no. 81513

Built
1973
52 years old
Condition
Fair
inspected November 2023
Type
Culvert
Concrete
Length
31 ft
2 main spans
Daily traffic
550
2022 count
Owner
County
County Highway Agency

About this bridge

Csah 5 over Iosco Creek is a concrete culvert carrying Csah 5 over Iosco Creek in Waseca County, Minnesota. It was built in 1973, so it is 52 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 550 vehicles a day, projected to reach 590 by 2042. The structure is 31 ft (9.6 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCsah 5
CrossesIosco Creek
Location1.5 MI S of JCT Csah 5
RouteCounty Highway 5
CountyWaseca County
StateMinnesota
Coordinates44.16951, -93.62792
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2023
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 adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating32.4 US tons
Inventory rating21.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length31 ft (9.6 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 traffic550 (2022)
Projected traffic590 by 2042
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 5 over Iosco Creek built?

It was built in 1973, making it 52 years old in 2025.

What condition is Csah 5 over Iosco 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 November 2023.

How much traffic does Csah 5 over Iosco Creek carry?

About 550 vehicles per day (2022 count).

How long is Csah 5 over Iosco Creek?

The structure is 31 ft (9.6 m) long with a longest span of 11 ft (3.5 m).

Who owns Csah 5 over Iosco Creek?

It is owned by the County Highway Agency.