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County Road S10 over Traprock River

Houghton County, Michigan · rated Good in the 2025 National Bridge Inventory

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

County Road S10 over Traprock River in Houghton County, Michigan, 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 2000, making it 25 years old at the 2025 inventory.
It carries about 240 vehicles a day (traffic count year 2000).
Its listed owner is the county highway agency.
It is one of 38 of the 59 inventoried bridges in Houghton County rated good (64.4%); 2 (3.4%) 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 multiple box beam
Length	about 54 ft
Location	1 Mi E 2.1 Mi N Lake Lind
NBI structure number	000000000003436
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
Us-41&m-26 Rr(abn) over Portage Lake & EB M-26	1960	24,754	Fair
US-41 over Pilgrim River	1916	5,543	Fair
M-26 over Quincy Creek	2021	5,200	Good
US-41 over Sturgeon River Slough	1956	3,985	Fair
US-41 over Snake River	1934	3,883	Fair
US-41 over Backwater Portage River	1929	3,883	Fair