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Sth 23-sth 154 over Br Narrows Creek

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

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

Sth 23-sth 154 over Br Narrows Creek in Sauk 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 1998, making it 27 years old at the 2025 inventory.
It carries about 3,000 vehicles a day (traffic count year 2021).
Its listed owner is the state highway agency.
It is one of 112 of the 275 inventoried bridges in Sauk County rated fair (40.7%); 25 (9.1%) 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 24 ft
Location	0.8M E Jct Sth 154 to W
NBI structure number	B56012600000000
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
Ih 90 Eb-ih 94 EB over Ush 12	1960	23,500	Fair
Ih 90 Wb-ih 94 WB over Ush 12	1960	23,500	Fair
Ih 90 Eb-ih 94 EB over Sth 23	1961	23,500	Fair
Ih 90 Wb-ih 94 WB over Sth 23	1961	23,500	Good
Ih 90 Eb-ih 94 EB over Mirror Lake	1961	23,500	Fair
Ih 90 Wb-ih 94 WB over Mirror Lake	1961	23,500	Fair