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Csah 18 over East Fork Rapid River

Koochiching County, Minnesota · rated Good in the 2025 National Bridge Inventory

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

Csah 18 over East Fork Rapid River in Koochiching County, Minnesota, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the substructure, rated 7 (good condition) on the 0-9 scale.
It was built in 1996, making it 29 years old at the 2025 inventory.
It carries about 76 vehicles a day (traffic count year 2021).
Its listed owner is the county highway agency.
It is one of 51 of the 98 inventoried bridges in Koochiching County rated good (52.0%); 6 (6.1%) 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 191 ft
Location	2.4 Mi SE of Jct CR 104
NBI structure number	36523
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
Mn 11 over Stream	1949	5,227	Fair
Mn 11 over Dwp RR	2018	3,565	Good
US 53 over Rat Root River	1976	2,833	Fair
Mn 11 over Jack Fish Bay	2012	2,016	Good
Mn 11 over Tilson Creek	2012	2,016	Good
US 53 over E Br Rat Root River	1964	1,733	Good