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Cth N over Green Bay Tributary

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

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

Cth N over Green Bay Tributary in Door County, Wisconsin, is rated in poor condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the culvert, rated 4 (poor condition) on the 0-9 scale.
It was built in 1965, making it 60 years old at the 2025 inventory.
It carries about 235 vehicles a day (traffic count year 2022).
Its listed owner is the county highway agency.
It is one of 1 of the 33 inventoried bridges in Door County rated poor (3.0%); 1 (3.0%) are rated poor.
A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.

Component ratings

Component	Rating (2025)	FHWA scale meaning
Culvert	4	Poor condition

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 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