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CR 52 over Black River

Pennington County, Minnesota · rated Poor in the 2025 National Bridge Inventory

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

CR 52 over Black River in Pennington County, Minnesota, is rated in poor condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the substructure, rated 4 (poor condition) on the 0-9 scale.
It was built in 1965, making it 60 years old at the 2025 inventory.
It carries about 35 vehicles a day (traffic count year 2019).
Its listed owner is the county highway agency.
It is one of 1 of the 49 inventoried bridges in Pennington County rated poor (2.0%); 1 (2.0%) are rated poor.
A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.

Component ratings


Structure	Prestressed concrete channel beam
Length	about 30 ft
Location	1.7 Mi W of Jct Csah 12
NBI structure number	90441
Condition class	Poor

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

Bridge	Built	Vehicles/day	Condition
US 59 over Red Lake River	1934	9,400	Fair
Msas 115 over Red Lake River	2009	6,900	Fair
Mn 1 over Thief River	1956	5,800	Fair
Msas 111 over Red Lake River	1950	5,200	Fair
Mn 32 over Ditch	1928	2,500	Fair
Csah 3 over Red Lake River	1962	2,100	Fair