US Bridges

Csah 24 over Heron Lake Outlet

Good

Jackson County, Minnesota · 1.7 MI E of JCT TH 60 · Structure no. 32576

Built
2017
8 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
123 ft
3 main spans
Daily traffic
206
2016 count
Owner
County
County Highway Agency

About this bridge

Csah 24 over Heron Lake Outlet is a prestressed concrete stringer/multi-beam or girder carrying Csah 24 over Heron Lake Outlet in Jackson County, Minnesota. It was built in 2017, so it is 8 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 206 vehicles a day, projected to reach 268 by 2036. The structure is 123 ft (37.5 m) long and 39 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCsah 24
CrossesHeron Lake Outlet
Location1.7 MI E of JCT TH 60
RouteCounty Highway 24
CountyJackson County
StateMinnesota
Coordinates43.80492, -95.26729
Functional classRural Minor Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation9: Superior to present desirable criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating91.1 US tons
Inventory rating51.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length123 ft (37.5 m)
Longest span40 ft (12.3 m)
Deck width39 ft (12 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic206 (2016)
Projected traffic268 by 2036
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 statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Csah 24 over Heron Lake Outlet built?

It was built in 2017, making it 8 years old in 2025.

What condition is Csah 24 over Heron Lake Outlet 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 October 2023.

How much traffic does Csah 24 over Heron Lake Outlet carry?

About 206 vehicles per day (2016 count).

How long is Csah 24 over Heron Lake Outlet?

The structure is 123 ft (37.5 m) long with a longest span of 40 ft (12.3 m) and a deck 39 ft wide.

Who owns Csah 24 over Heron Lake Outlet?

It is owned by the County Highway Agency.