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Csah 13 over Estes Brook

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

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

Csah 13 over Estes Brook in Mille Lacs 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 1960, making it 65 years old at the 2025 inventory.
It carries about 120 vehicles a day (traffic count year 2018).
Its listed owner is the county highway agency.
It is one of 8 of the 107 inventoried bridges in Mille Lacs County rated poor (7.5%); 8 (7.5%) 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 25 ft
Location	0.4 Mi E of Jct Csah 7
NBI structure number	48501
Condition class	Poor

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

Bridge	Built	Vehicles/day	Condition
Csah 29 over W Br Rum River	2010	10,400	Good
Mn 95 over US 169	1979	10,100	Fair
Mn 95 over Battle Brook	1956	10,100	Fair
US 169 over Bradbury Brook	1990	9,915	Fair
US 169 over W Br Rum River	1978	9,650	Fair
US 169 over W Br Rum River	1978	9,650	Fair