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Csah 31 over Straight River

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

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

Csah 31 over Straight River in Steele County, Minnesota, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 1973, making it 52 years old at the 2025 inventory.
It carries about 225 vehicles a day (traffic count year 2019).
Its listed owner is the county highway agency.
It is one of 52 of the 134 inventoried bridges in Steele County rated fair (38.8%); 5 (3.7%) 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	Timber stringer or multi-beam girder
Length	about 113 ft
Location	0.1 Mi E of Jct Csah 30
NBI structure number	74523
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 Crane Creek	1958	30,387	Fair
I 35 over Ditch	1964	21,305	Fair
I 35 over Dme RR	2014	17,891	Good
I 35 over Dme RR	2014	17,891	Good
I 35 over Csah 34	1995	17,000	Good
I 35 over Hoffman Drive NW	2014	17,000	Good