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Sth 49 over Little Wolf River

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

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

Sth 49 over Little Wolf River in Marathon 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 5 (fair condition) on the 0-9 scale.
It was built in 1947 and reconstructed in 1978, making it 78 years old at the 2025 inventory.
It carries about 1,700 vehicles a day (traffic count year 2021).
Its listed owner is the state highway agency.
It is one of 288 of the 531 inventoried bridges in Marathon County rated fair (54.2%); 40 (7.5%) 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 40 ft
Location	4.8M N Jct Sth 66 to W
NBI structure number	B37042900000000
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
Ih Ush 51-ih 39 NB over Ush Bus 51 & R.R.	2012	39,600	Fair
Ih 39 Sb/ush 51 over Ush Bus 51	2013	39,600	Good
Ush 51NB over Lrd Stewart Ave	2009	38,600	Good
Ush 51 SB over Lrd Hwy 52 Parkway	2007	38,600	Good
Ih Ush 51-ih 39 SB over Wisconsin River 26	1968	37,700	Good
Ush 51 NB over Lrd Sherman St	2007	34,100	Good