US Bridges

Sth 121 over Maule Coulee Creek

Good

Trempealeau County, Wisconsin · 1.6M E JCT Sth 93 to S · Structure no. B61001600000000

Built
1952
73 years old, rebuilt 2015
Condition
Good
inspected October 2024
Type
Culvert
Concrete Continuous
Length
30 ft
2 main spans
Daily traffic
3,400
2022 count
Owner
State
State Highway Agency

About this bridge

Sth 121 over Maule Coulee Creek is a concrete continuous culvert carrying Sth 121 over Maule Coulee Creek in Trempealeau County, Wisconsin. It was built in 1952 and reconstructed in 2015, so it is 73 years old, older than the Wisconsin average of 40.3 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 3,400 vehicles a day, roughly 6% of them trucks, projected to reach 4,680 by 2043. The structure is 30 ft (9 m) long. If it were closed, the detour would be 8.7 mi (14 km).

CarriesSth 121
CrossesMaule Coulee Creek
Location1.6M E JCT Sth 93 to S
RouteState Highway 121
Coordinates44.36502, -91.38942
Functional classRural Minor Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45.2 US tons
Inventory rating26.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length30 ft (9 m)
Longest span14 ft (4.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,400 (2022)
Projected traffic4,680 by 2043
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Sth 121 over Maule Coulee Creek built?

It was built in 1952, making it 73 years old in 2025. It was reconstructed in 2015.

What condition is Sth 121 over Maule Coulee Creek 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 2024.

How much traffic does Sth 121 over Maule Coulee Creek carry?

About 3,400 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is Sth 121 over Maule Coulee Creek?

The structure is 30 ft (9 m) long with a longest span of 14 ft (4.3 m).

Who owns Sth 121 over Maule Coulee Creek?

It is owned by the State Highway Agency.