US Bridges

T 120 over S Fk Watonwan River

Good

Watonwan County, Minnesota · 0.4 MI N of CR 101 · Structure no. 83537

Built
1996
29 years old
Condition
Good
inspected October 2023
Type
Slab
Wood or Timber
Length
85 ft
3 main spans
Daily traffic
29
1995 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

T 120 over S Fk Watonwan River is a wood or timber slab carrying T 120 over S Fk Watonwan River in Watonwan County, Minnesota. It was built in 1996, so it is 29 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 29 vehicles a day, projected to reach 29 by 2029. The structure is 85 ft (26 m) long and 30 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesT 120
CrossesS Fk Watonwan River
Location0.4 MI N of CR 101
RouteCounty Highway 120
Coordinates43.88344, -94.67922
Functional classRural Local

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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.5 US tons
Inventory rating39.2 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans3
Design loadHS 25 or greater
Structure length85 ft (26 m)
Longest span30 ft (9.1 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29 (1995)
Projected traffic29 by 2029
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township 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 T 120 over S Fk Watonwan River built?

It was built in 1996, making it 29 years old in 2025.

What condition is T 120 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 October 2023.

How much traffic does T 120 over S Fk Watonwan River carry?

About 29 vehicles per day (1995 count).

How long is T 120 over S Fk Watonwan River?

The structure is 85 ft (26 m) long with a longest span of 30 ft (9.1 m) and a deck 30 ft wide.

Who owns T 120 over S Fk Watonwan River?

It is owned by the Town or Township Highway Agency.