US Bridges

Csah 24 over Watonwan River

Good

Watonwan County, Minnesota · 1.1 MI E of JCT Csah 13 · Structure no. 83531

Built
1990
35 years old
Condition
Good
inspected November 2023
Type
Slab
Concrete Continuous
Length
157 ft
4 main spans
Daily traffic
320
2016 count
Owner
County
County Highway Agency

About this bridge

Csah 24 over Watonwan River is a concrete continuous slab carrying Csah 24 over Watonwan River in Watonwan County, Minnesota. It was built in 1990, so it is 35 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 320 vehicles a day, projected to reach 320 by 2035. The structure is 157 ft (47.9 m) long and 43 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesCsah 24
CrossesWatonwan River
Location1.1 MI E of JCT Csah 13
RouteCounty Highway 24
Coordinates44.04454, -94.43188
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.4 US tons
Inventory rating34.4 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 25 or greater
Structure length157 ft (47.9 m)
Longest span43 ft (13.1 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic320 (2016)
Projected traffic320 by 2035
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 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 24 over Watonwan River built?

It was built in 1990, making it 35 years old in 2025.

What condition is Csah 24 over Watonwan 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 November 2023.

How much traffic does Csah 24 over Watonwan River carry?

About 320 vehicles per day (2016 count).

How long is Csah 24 over Watonwan River?

The structure is 157 ft (47.9 m) long with a longest span of 43 ft (13.1 m) and a deck 43 ft wide.

Who owns Csah 24 over Watonwan River?

It is owned by the County Highway Agency.