US Bridges

CR 51 over Little Le Sueur River

Fair

Waseca County, Minnesota · 0.9 MI S of JCT Csah 4 · Structure no. 91620

Built
1977
48 years old
Condition
Fair
inspected December 2021
Type
Culvert
Concrete
Length
34 ft
2 main spans
Daily traffic
310
2021 count
Owner
County
County Highway Agency

About this bridge

CR 51 over Little Le Sueur River is a concrete culvert carrying CR 51 over Little Le Sueur River in Waseca 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 310 vehicles a day, projected to reach 420 by 2041. The structure is 34 ft (10.4 m) long. If it were closed, the detour would be 5 mi (8 km).

CarriesCR 51
CrossesLittle Le Sueur River
Location0.9 MI S of JCT Csah 4
RouteCounty Highway 51
Coordinates44.00154, -93.50911
Functional classRural Local

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.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating59.4 US tons
Inventory rating39.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length34 ft (10.4 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 traffic310 (2021)
Projected traffic420 by 2041
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was CR 51 over Little Le Sueur River built?

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

What condition is CR 51 over Little Le Sueur River 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 December 2021.

How much traffic does CR 51 over Little Le Sueur River carry?

About 310 vehicles per day (2021 count).

How long is CR 51 over Little Le Sueur River?

The structure is 34 ft (10.4 m) long with a longest span of 13 ft (3.9 m).

Who owns CR 51 over Little Le Sueur River?

It is owned by the County Highway Agency.