US Bridges

Csah 13 over S Fk Watonwan River

Good

Watonwan County, Minnesota · 0.1 MI W of JCT CR 109 · Structure no. 83524

Built
1984
41 years old
Condition
Good
inspected November 2023
Type
Tee Beam
Prestressed Concrete
Length
133 ft
3 main spans
Daily traffic
950
2016 count
Owner
County
County Highway Agency

About this bridge

Csah 13 over S Fk Watonwan River is a prestressed concrete tee beam carrying Csah 13 over S Fk Watonwan River in Watonwan County, Minnesota. It was built in 1984, so it is 41 years old, older 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 950 vehicles a day, projected to reach 950 by 2035. The structure is 133 ft (40.5 m) long and 45 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesCsah 13
CrossesS Fk Watonwan River
Location0.1 MI W of JCT CR 109
RouteCounty Highway 13
Coordinates44.02916, -94.47073
Functional classRural Major 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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38.3 US tons
Inventory rating20 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length133 ft (40.5 m)
Longest span44 ft (13.5 m)
Deck width45 ft (13.7 m)
Roadway width42 ft (12.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic950 (2016)
Projected traffic950 by 2035
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 13 over S Fk Watonwan River built?

It was built in 1984, making it 41 years old in 2025.

What condition is Csah 13 over S Fk 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 13 over S Fk Watonwan River carry?

About 950 vehicles per day (2016 count).

How long is Csah 13 over S Fk Watonwan River?

The structure is 133 ft (40.5 m) long with a longest span of 44 ft (13.5 m) and a deck 45 ft wide.

Who owns Csah 13 over S Fk Watonwan River?

It is owned by the County Highway Agency.