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Sth 42 - Sth 57 over Sturgeon Bay

Door County, Wisconsin · rated Fair in the 2025 National Bridge Inventory

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled August 20, 2026

Sth 42 - Sth 57 over Sturgeon Bay in Door County, Wisconsin, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 1978, making it 47 years old at the 2025 inventory.
It carries about 12,500 vehicles a day (traffic count year 2021).
Its listed owner is the state highway agency.
It is one of 17 of the 33 inventoried bridges in Door County rated fair (51.5%); 1 (3.0%) are rated poor.
A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.

Component ratings


Structure	Steel stringer or multi-beam girder
Length	about 160 ft
Location	1.9M N Jct Cth S
NBI structure number	B15000400020000
Condition class	Fair

Source: FHWA National Bridge Inventory, 2025 data as reported by the Wisconsin department of transportation.

Bridge	Built	Vehicles/day	Condition
Sth 42 - Sth 57 over Sturgeon Bay	1978	14,200	Fair
Sth 42 - Sth 57 over Sturgeon Bay	1978	12,500	Fair
Sth 42 - Sth 57 over Sturgeon Bay	1978	12,500	Fair
Sth 42 - Sth 57 over Lrd Memorial Dr	1978	12,500	Fair
Sth 57 NB over Fabry CR	2008	11,200	Fair
Lrd Michigan Stree over Sturgeon Bay	1930	8,300	Good