US Bridges

T 124 over Watonwan River

Fair

Cottonwood County, Minnesota · 1.0 MI N of JCT Csah 3 · Structure no. L6800

Built
1973
52 years old
Condition
Fair
inspected October 2023
Type
Slab
Wood or Timber
Length
52 ft
2 main spans
Daily traffic
20
1986 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

T 124 over Watonwan River is a wood or timber slab carrying T 124 over Watonwan River in Cottonwood County, Minnesota. It was built in 1973, so it is 52 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.

It carries about 20 vehicles a day, projected to reach 20 by 2029. The structure is 52 ft (15.9 m) long and 26 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesT 124
CrossesWatonwan River
Location1.0 MI N of JCT Csah 3
RouteCounty Highway 124
Coordinates44.00524, -94.89947
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating59 US tons
Inventory rating42.1 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans2
Design loadUnknown
Structure length52 ft (15.9 m)
Longest span26 ft (7.8 m)
Deck width26 ft (7.9 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (1986)
Projected traffic20 by 2029
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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$600 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was T 124 over Watonwan River built?

It was built in 1973, making it 52 years old in 2025.

What condition is T 124 over Watonwan 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 2023.

How much traffic does T 124 over Watonwan River carry?

About 20 vehicles per day (1986 count).

How long is T 124 over Watonwan River?

The structure is 52 ft (15.9 m) long with a longest span of 26 ft (7.8 m) and a deck 26 ft wide.

Who owns T 124 over Watonwan River?

It is owned by the Town or Township Highway Agency.