US Bridges

Csah 4 over Le Sueur River

Fair

Waseca County, Minnesota · 0.3 MI E of JCT Csah 23 · Structure no. 81518

Built
1982
43 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
146 ft
3 main spans
Daily traffic
912
2021 count
Owner
County
County Highway Agency

About this bridge

Csah 4 over Le Sueur River is a steel continuous stringer/multi-beam or girder carrying Csah 4 over Le Sueur River in Waseca County, Minnesota. It was built in 1982, so it is 43 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 912 vehicles a day, projected to reach 990 by 2041. The structure is 146 ft (44.6 m) long and 43 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesCsah 4
CrossesLe Sueur River
Location0.3 MI E of JCT Csah 23
RouteCounty Highway 4
CountyWaseca County
StateMinnesota
Coordinates44.0142, -93.5256
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 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
Deck geometry8: Equal to present desirable criteria
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating63.4 US tons
Inventory rating37.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length146 ft (44.6 m)
Longest span55 ft (16.8 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic912 (2021)
Projected traffic990 by 2041
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 4 over Le Sueur River built?

It was built in 1982, making it 43 years old in 2025.

What condition is Csah 4 over 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 November 2023.

How much traffic does Csah 4 over Le Sueur River carry?

About 912 vehicles per day (2021 count).

How long is Csah 4 over Le Sueur River?

The structure is 146 ft (44.6 m) long with a longest span of 55 ft (16.8 m) and a deck 43 ft wide.

Who owns Csah 4 over Le Sueur River?

It is owned by the County Highway Agency.