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Sth 57 over Br Milwaukee River

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

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

Sth 57 over Br Milwaukee River in Ozaukee County, Wisconsin, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the culvert, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 1974 and reconstructed in 2001, making it 51 years old at the 2025 inventory.
It carries about 10,500 vehicles a day (traffic count year 2023).
Its listed owner is the state highway agency.
It is one of 76 of the 106 inventoried bridges in Ozaukee County rated fair (71.7%); 3 (2.8%) 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

Component	Rating (2025)	FHWA scale meaning
Culvert	6	Satisfactory condition


Structure	Continuous concrete culvert
Length	about 22 ft
Location	1.7M N Jct Ih 43 to N
NBI structure number	B45006700000000
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
Ih 43-sth 32-sth 5 over Br Milwaukee River	1966	50,300	Fair
Ih 43 Nb-sth 32 NB over Sth 57-sth 167-mequon Rd	2024	34,300	Good
Ih 43 Sb-sth 32 SB over Sth 57-sth 167-mequon Rd	2024	34,300	Fair
Ih 43 Sb-sth 32 SB over Lrd Lakefield Rd	2023	26,600	Good
Ih 43-sth 32 over Sucker Creek	1974	26,300	Fair
Ih 43-sth 32 over Sucker Creek	1974	26,300	Fair