US Bridges

Lrd Michigan Stree over Sturgeon Bay

Good

Door County, Wisconsin · 1.0M N JCT Sth 42 · Structure no. B15010000010000

Built
1930
95 years old, rebuilt 1979
Condition
Good
inspected May 2023
Type
Slab
Concrete Continuous
Length
150 ft
3 main spans
Daily traffic
8,300
2021 count
Owner
State
State Highway Agency

About this bridge

Lrd Michigan Stree over Sturgeon Bay is a concrete continuous slab carrying Lrd Michigan Stree over Sturgeon Bay in Door County, Wisconsin. It was built in 1930 and reconstructed in 1979, so it is 95 years old, older 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 8,300 vehicles a day, projected to reach 15,246 by 2042. The structure is 150 ft (45.7 m) long and 35 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

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CarriesLrd Michigan Stree
CrossesSturgeon Bay
Location1.0M N JCT Sth 42
RouteCity Street 0
CountyDoor County
StateWisconsin
Coordinates44.83305, -87.37895
Functional classUrban Other Principal Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating88.2 US tons
Inventory rating50 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length150 ft (45.7 m)
Longest span48 ft (14.6 m)
Deck width35 ft (10.7 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,300 (2021)
Projected traffic15,246 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.2 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Lrd Michigan Stree over Sturgeon Bay built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1979.

What condition is Lrd Michigan Stree over Sturgeon Bay 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 May 2023.

How much traffic does Lrd Michigan Stree over Sturgeon Bay carry?

About 8,300 vehicles per day (2021 count).

How long is Lrd Michigan Stree over Sturgeon Bay?

The structure is 150 ft (45.7 m) long with a longest span of 48 ft (14.6 m) and a deck 35 ft wide.

Who owns Lrd Michigan Stree over Sturgeon Bay?

It is owned by the State Highway Agency.