US Bridges

Sth 57 over Unnamed Stream

Fair

Kewaunee County, Wisconsin · 0.3M South of Macco RD · Structure no. B31008900000000

Built
2005
20 years old
Condition
Fair
inspected August 2024
Type
Culvert
Concrete Continuous
Length
21 ft
2 main spans
Daily traffic
10,800
2022 count
Owner
State
State Highway Agency

About this bridge

Sth 57 over Unnamed Stream is a concrete continuous culvert carrying Sth 57 over Unnamed Stream in Kewaunee County, Wisconsin. It was built in 2005, so it is 20 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 10,800 vehicles a day, roughly 11% of them trucks, projected to reach 14,800 by 2043. The structure is 21 ft (6.5 m) long. If it were closed, the detour would be 2.5 mi (4 km).

Location

Open in Google Maps
CarriesSth 57
CrossesUnnamed Stream
Location0.3M South of Macco RD
RouteState Highway 57
CountyKewaunee County
StateWisconsin
Coordinates44.64432, -87.75297
Functional classUrban Minor Arterial

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 protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 48 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 spans2
Design loadHS 20
Structure length21 ft (6.5 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,800 (2022)
Projected traffic14,800 by 2043
Trucks11%
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 Unnamed Stream built?

It was built in 2005, making it 20 years old in 2025.

What condition is Sth 57 over Unnamed Stream 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 August 2024.

How much traffic does Sth 57 over Unnamed Stream carry?

About 10,800 vehicles per day (2022 count), of which roughly 11% are trucks.

How long is Sth 57 over Unnamed Stream?

The structure is 21 ft (6.5 m) long with a longest span of 10 ft (3 m).

Who owns Sth 57 over Unnamed Stream?

It is owned by the State Highway Agency.