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T 173 over Stream

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

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

T 173 over Stream in Mower 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 5 (fair condition) on the 0-9 scale.
It was built in 1936, making it 89 years old at the 2025 inventory.
It carries about 54 vehicles a day (traffic count year 1986).
Its listed owner is the county highway agency.
It is one of 162 of the 343 inventoried bridges in Mower County rated fair (47.2%); 28 (8.2%) 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	Steel stringer or multi-beam girder
Length	about 23 ft
Location	1.6 Mi E of Jct Csah 8
NBI structure number	L5099
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
Con 2589 over I 90	2010	27,200	Good
I 90 over Dobbins Creek	2009	18,300	Good
I 90 over Rose Creek	1959	13,166	Poor
I 90 over Rose Creek	1959	13,166	Fair
I 90 EB over Cedar River	2024	11,649	Good
I 90 over Cedar River	1958	11,649	Fair