US Bridges

Sth 23 over Br Mullet River

Fair

Sheboygan County, Wisconsin · 0.1M E JCT Sth 57 · Structure no. B59009000000000

Built
1984
41 years old
Condition
Fair
inspected July 2024
Type
Culvert
Concrete
Length
22 ft
2 main spans
Daily traffic
20,700
2022 count
Owner
State
State Highway Agency

About this bridge

Sth 23 over Br Mullet River is a concrete culvert carrying Sth 23 over Br Mullet River in Sheboygan County, Wisconsin. It was built in 1984, so it is 41 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 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 20,700 vehicles a day, roughly 8% of them trucks, projected to reach 28,000 by 2043. The structure is 22 ft (6.8 m) long. If it were closed, the detour would be 2.5 mi (4 km).

Location

Open in Google Maps
CarriesSth 23
CrossesBr Mullet River
Location0.1M E JCT Sth 57
RouteState Highway 23
CountySheboygan County
StateWisconsin
Coordinates43.75549, -87.93902
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 protection8 Very GoodNo problems noted.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2024
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
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
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length22 ft (6.8 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 traffic20,700 (2022)
Projected traffic28,000 by 2043
Trucks8%
Lanes on structure6
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 23 over Br Mullet River built?

It was built in 1984, making it 41 years old in 2025.

What condition is Sth 23 over Br 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 July 2024.

How much traffic does Sth 23 over Br Mullet River carry?

About 20,700 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is Sth 23 over Br Mullet River?

The structure is 22 ft (6.8 m) long with a longest span of 10 ft (3 m).

Who owns Sth 23 over Br Mullet River?

It is owned by the State Highway Agency.