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Csah 1 over Shell Rock River

Freeborn County, Minnesota · rated Fair in the 2025 National Bridge Inventory

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

Csah 1 over Shell Rock River in Freeborn County, Minnesota, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the substructure, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 1972, making it 53 years old at the 2025 inventory.
It carries about 465 vehicles a day (traffic count year 2017).
Its listed owner is the county highway agency.
It is one of 70 of the 144 inventoried bridges in Freeborn County rated fair (48.6%); 4 (2.8%) are rated poor.
A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.

Component ratings


Structure	Prestressed concrete stringer or multi-beam girder
Length	about 172 ft
Location	0.9 Mi W of Jct Th 65
NBI structure number	24508
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
I 35 over Ditch	1965	20,576	Fair
I 35 over Co Ditch # 10	1970	18,156	Fair
US 65 over Shell Rock River	2000	15,100	Good
US 65 over UP RR	2000	15,100	Good
I 90 over Bancroft Creek	1968	12,600	Good
I 35 over Th 65; UP RR	1970	11,310	Fair