US Bridges

Sth 57 over Mullet River

Fair

Sheboygan County, Wisconsin · 2.8M N JCT Sth 28 to E · Structure no. B59001500000000

Built
1961
64 years old, rebuilt 1980
Condition
Fair
inspected June 2024
Type
Culvert
Concrete Continuous
Length
41 ft
3 main spans
Daily traffic
9,100
2022 count
Owner
State
State Highway Agency

About this bridge

Sth 57 over Mullet River is a concrete continuous culvert carrying Sth 57 over Mullet River in Sheboygan County, Wisconsin. It was built in 1961 and reconstructed in 1980, so it is 64 years old, older than the Wisconsin average of 40.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 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 9,100 vehicles a day, roughly 8% of them trucks, projected to reach 7,665 by 2043. The structure is 41 ft (12.4 m) long. If it were closed, the detour would be 2.5 mi (4 km).

CarriesSth 57
CrossesMullet River
Location2.8M N JCT Sth 28 to E
RouteState Highway 57
Coordinates43.7217, -87.94054
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length41 ft (12.4 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,100 (2022)
Projected traffic7,665 by 2043
Trucks8%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 km)
TollOn a free road
National Highway SystemYes

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 57 over Mullet River built?

It was built in 1961, making it 64 years old in 2025. It was reconstructed in 1980.

What condition is Sth 57 over Mullet 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 June 2024.

How much traffic does Sth 57 over Mullet River carry?

About 9,100 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is Sth 57 over Mullet River?

The structure is 41 ft (12.4 m) long with a longest span of 12 ft (3.7 m).

Who owns Sth 57 over Mullet River?

It is owned by the State Highway Agency.