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Bridge conditions in Brown County, Minnesota

108 inventoried bridges · 3 rated poor · 2025 National Bridge Inventory

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

Brown County tracks close to typical: 3 of its 108 inventoried bridges (2.8%) are rated poor, against a national rate of about 7%.

3 of the 108 bridges in Brown County, Minnesota, are rated in poor condition (2.8%) in the 2025 National Bridge Inventory, as of August 20, 2026.
67 bridges (62.0%) are rated good and 38 (35.2%) fair.
The median Brown County bridge was built in 1981.
The busiest poor-rated bridge is Msas 110 over Minnesota River (built 1978), carrying about 6,924 vehicles a day.

Good 62.0% · Fair 35.2% · Poor 2.8% of 108 bridges

Bridges rated poor

Every bridge in the county with a poor rating, busiest first. Poor means a major component is rated 4 or lower on FHWA's 0-9 scale; it is a repair flag, not a closure notice.

Bridge	Built	Vehicles/day	Condition
Msas 110 over Minnesota River	1978	6,924	Poor
Csah 5 over Little Cottonwood River	1951	402	Poor
T 38 over Little Cottonwood River	1980	29	Poor

Busiest bridges in the county

Bridge	Built	Vehicles/day	Condition
US 14 over Minnesota River	2019	8,262	Good
US 14 over Front St; Cp RR	2018	8,262	Good
Msas 110 over Minnesota River	1978	6,924	Poor
Mn 15 over Cottonwood River	1983	6,200	Fair
Csah 29 over Dm E RR	1988	5,400	Fair
Mn 15 over Little Cottonwood River	1988	3,450	Fair
US 14 over Jud Ditch # 30	1992	2,572	Good
Csah 13 over Big Cottonwood River	1969	2,428	Good
US 14 over Coal Mine Creek	1931	2,400	Good
US 14 over Sleepy Eye Creek	2001	2,344	Good

Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.

All of Minnesota: Minnesota bridge conditions by county · every download on the data page.

Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.