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Cth H over Alder Creek

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

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

Cth H over Alder Creek in Winnebago 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 1932, making it 93 years old at the 2025 inventory.
It carries about 922 vehicles a day (traffic count year 2022).
Its listed owner is the county highway agency.
It is one of 94 of the 265 inventoried bridges in Winnebago County rated fair (35.5%); 8 (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	Concrete stringer or multi-beam girder
Length	about 31 ft
Location	4.4M S Jct Cth Ah
NBI structure number	B70092000000000
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
Ih 41 over S Br Mud Creek	1935	88,300	Fair
Ih 41 over Neenah Slough	1975	65,700	Fair
Ih 41 over Trib Lake Butte Des Mort	2011	59,900	Good
Ush 10 Wb/sth 441 over Cth Ap (midway Rd)	2018	52,300	Good
Ih 41 SB over Menasha Creek	1992	52,000	Fair
Ih 41 NB over Menasha Creek	1992	52,000	Fair