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Sth 21 over Carter Creek

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

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

Sth 21 over Carter Creek in Adams 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 8 (very good condition) on the 0-9 scale.
It was built in 2013, making it 12 years old at the 2025 inventory.
It carries about 3,600 vehicles a day (traffic count year 2022).
Its listed owner is the state highway agency.
It is one of 27 of the 42 inventoried bridges in Adams County rated good (64.3%); 1 (2.4%) 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	Prestressed concrete stringer or multi-beam girder
Length	about 77 ft
Location	0.6M E Jct Sth 13
NBI structure number	B01003400000000
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
Sth 13 over Carter Creek	1937	7,100	Fair
Sth 13-main St over Little Roche A Cri Creek	1993	7,020	Fair
Sth 13 over Fourteen Mile Creek	1957	5,800	Fair
Sth 21 over Wisconsin River	1959	4,600	Fair
Sth 21 over Wisconsin R Backwater	2010	4,300	Good
Sth 13 over Big Roche A Cri Lake	2012	4,200	Good