US Bridges

Sth 57 over Baileys Harbor Marsh

Good

Door County, Wisconsin · 2.70 MI N of Cth Q · Structure no. B15002600000000

Built
2017
8 years old
Condition
Good
inspected March 2022
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
42 ft
1 main span
Daily traffic
4,500
2022 count
Owner
State
State Highway Agency

About this bridge

Sth 57 over Baileys Harbor Marsh is a prestressed concrete box beam or girders - multiple carrying Sth 57 over Baileys Harbor Marsh in Door County, Wisconsin. It was built in 2017, so it is 8 years old, younger 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 4,500 vehicles a day, roughly 8% of them trucks, projected to reach 3,300 by 2041. The structure is 42 ft (12.7 m) long and 40 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

Location

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CarriesSth 57
CrossesBaileys Harbor Marsh
Location2.70 MI N of Cth Q
RouteState Highway 57
CountyDoor County
StateWisconsin
Coordinates45.11064, -87.13251
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: 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 rating73.5 US tons
Inventory rating48.9 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length42 ft (12.7 m)
Longest span38 ft (11.5 m)
Deck width40 ft (12.3 m)
Roadway width37 ft (11.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,500 (2022)
Projected traffic3,300 by 2041
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 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 57 over Baileys Harbor Marsh built?

It was built in 2017, making it 8 years old in 2025.

What condition is Sth 57 over Baileys Harbor Marsh 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 March 2022.

How much traffic does Sth 57 over Baileys Harbor Marsh carry?

About 4,500 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is Sth 57 over Baileys Harbor Marsh?

The structure is 42 ft (12.7 m) long with a longest span of 38 ft (11.5 m) and a deck 40 ft wide.

Who owns Sth 57 over Baileys Harbor Marsh?

It is owned by the State Highway Agency.