US Bridges

Sth 57 over Cth a

Fair

Sheboygan County, Wisconsin · At Cth a · Structure no. B59030800000000

Built
2003
22 years old
Condition
Fair
inspected June 2024
Type
Slab
Concrete Continuous
Length
142 ft
3 main spans
Daily traffic
6,800
2022 count
Owner
State
State Highway Agency

About this bridge

Sth 57 over Cth a is a concrete continuous slab carrying Sth 57 over Cth a in Sheboygan County, Wisconsin. It was built in 2003, so it is 22 years old, younger 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 6,800 vehicles a day, projected to reach 7,900 by 2043. The structure is 142 ft (43.4 m) long and 47 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

CarriesSth 57
CrossesCth a
LocationAt Cth a
RouteState Highway 57
Coordinates43.83336, -87.94143
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating79.1 US tons
Inventory rating46.4 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length142 ft (43.4 m)
Longest span56 ft (17.1 m)
Deck width47 ft (14.2 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,800 (2022)
Projected traffic7,900 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Sth 57 over Cth a built?

It was built in 2003, making it 22 years old in 2025.

What condition is Sth 57 over Cth a 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 Cth a carry?

About 6,800 vehicles per day (2022 count).

How long is Sth 57 over Cth a?

The structure is 142 ft (43.4 m) long with a longest span of 56 ft (17.1 m) and a deck 47 ft wide.

Who owns Sth 57 over Cth a?

It is owned by the State Highway Agency.