US Bridges

Csah 28 over Le Sueur River

FairPosted for load

Blue Earth County, Minnesota · 0.1 MI N of JCT Csah 15 · Structure no. 7220

Built
1958
67 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
135 ft
3 main spans
Daily traffic
628
2022 count
Owner
County
County Highway Agency

About this bridge

Csah 28 over Le Sueur River is a steel continuous stringer/multi-beam or girder carrying Csah 28 over Le Sueur River in Blue Earth County, Minnesota. It was built in 1958, so it is 67 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. Its operating status is: posted for load restriction.

It carries about 628 vehicles a day, projected to reach 1,150 by 2042. The structure is 135 ft (41.2 m) long and 31 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesCsah 28
CrossesLe Sueur River
Location0.1 MI N of JCT Csah 15
RouteCounty Highway 28
CountyBlue Earth County
StateMinnesota
Coordinates44.08311, -93.85493
Functional classRural Minor 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating27.7 US tons
Inventory rating16.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length135 ft (41.2 m)
Longest span60 ft (18.3 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic628 (2022)
Projected traffic1,150 by 2042
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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$585 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Csah 28 over Le Sueur River built?

It was built in 1958, making it 67 years old in 2025.

What condition is Csah 28 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 October 2024.

How much traffic does Csah 28 over Le Sueur River carry?

About 628 vehicles per day (2022 count).

How long is Csah 28 over Le Sueur River?

The structure is 135 ft (41.2 m) long with a longest span of 60 ft (18.3 m) and a deck 31 ft wide.

Who owns Csah 28 over Le Sueur River?

It is owned by the County Highway Agency.