US Bridges

Csah 3 over Little Cobb River

Good

Waseca County, Minnesota · 0.1 MI S of JCT Csah 4 · Structure no. 81532

Built
2024
1 years old
Condition
Good
inspected July 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
70 ft
1 main span
Daily traffic
892
2022 count
Owner
County
County Highway Agency

About this bridge

Csah 3 over Little Cobb River is a prestressed concrete stringer/multi-beam or girder carrying Csah 3 over Little Cobb River in Waseca County, Minnesota. It was built in 2024, so it is 1 years old, younger 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 892 vehicles a day, roughly 10% of them trucks, projected to reach 1,070 by 2042. The structure is 70 ft (21.3 m) long and 35 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesCsah 3
CrossesLittle Cobb River
Location0.1 MI S of JCT Csah 4
RouteCounty Highway 3
Coordinates43.94726, -93.69754
Functional classRural Minor Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating54.7 US tons
Inventory rating42.1 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length70 ft (21.3 m)
Longest span70 ft (21.3 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic892 (2022)
Projected traffic1,070 by 2042
Trucks10%
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 statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Csah 3 over Little Cobb River built?

It was built in 2024, making it 1 years old in 2025.

What condition is Csah 3 over Little Cobb River 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 July 2024.

How much traffic does Csah 3 over Little Cobb River carry?

About 892 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is Csah 3 over Little Cobb River?

The structure is 70 ft (21.3 m) long with a longest span of 70 ft (21.3 m) and a deck 35 ft wide.

Who owns Csah 3 over Little Cobb River?

It is owned by the County Highway Agency.