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Sth 42 over Manitowoc River

Manitowoc County, Wisconsin · rated Good in the 2025 National Bridge Inventory

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

Sth 42 over Manitowoc River in Manitowoc County, Wisconsin, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
It was built in 1987, making it 38 years old at the 2025 inventory.
It carries about 20,634 vehicles a day (traffic count year 2022).
Its listed owner is a city or municipal highway agency.
It is one of 122 of the 277 inventoried bridges in Manitowoc County rated good (44.0%); 13 (4.7%) are rated poor.
A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.

Component ratings


Structure	Steel stringer or multi-beam girder
Length	about 109 ft
Location	at Manitowoc River
NBI structure number	B36012800010000
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
Ih 43 over Fischer Creek	1976	24,400	Fair
Ih 43 over Calvin Creek	1978	23,200	Fair
Ih 43 over Silver Creek	1978	23,200	Fair
Ih 43 over Pine Creek	1978	22,500	Fair
Sth 42 over Manitowoc River	1987	20,634	Good
Ih 43 over Francis Creek	1976	20,000	Fair