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Bridge conditions in Ottawa County, Michigan

253 inventoried bridges · 23 rated poor · 2025 National Bridge Inventory

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

The federal inventory lists 253 bridges in Ottawa County: 79 rated good, 151 fair, and 23 poor.

23 of the 253 bridges in Ottawa County, Michigan, are rated in poor condition (9.1%) in the 2025 National Bridge Inventory, as of August 20, 2026.
79 bridges (31.2%) are rated good and 151 (59.7%) fair.
The median Ottawa County bridge was built in 1973.
The busiest poor-rated bridge is Riley St over Pine Creek (built 1972), carrying about 13,227 vehicles a day.

Good 31.2% · Fair 59.7% · Poor 9.1% of 253 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
Riley St over Pine Creek	1972	13,227	Poor
96TH Avenue over Pigeon Creek	1973	7,380	Poor
Randall Street over Deer Creek	1920	6,976	Poor
Adams St over Black River Tributary	1973	6,930	Poor
Adams Street over Black River Tributary	1973	6,840	Poor
Byron Road over Kampen-struik Drain	1980	5,810	Poor
West Spring Lake R over Smith Bayou	1972	5,424	Poor
96TH Avenue over Bass River	1973	5,360	Poor
104TH Ave over Black Creek	1976	5,243	Poor
24TH Ave over Black Creek	1970	4,685	Poor
Adams Street over Kampen-struk Drain	1957	3,480	Poor
Hayes St over Branch of Sand Creek	1923	3,060	Poor
Cleveland Street over Crockery Creek Tributary	1923	3,040	Poor
Hayes St over Sand Creek Tributary	1974	2,950	Poor
South Shore Drive over Montello Park Drain	1900	1,920	Poor
Main St. over Deer Creek	1920	1,528	Poor
Grove St over Deer Creek	1970	1,190	Poor
West Olive Rd over Pigeon Creek	1920	1,050	Poor
24TH Ave over Sand Creek	1972	740	Poor
32ND Ave over N Branch Crockery Creek	1973	735	Poor
40TH Avenue over Rio Grande Creek	1972	480	Poor
Felch Street over Black River	1973	100	Poor
76TH Avenue over Black Creek	1974	100	Poor

Busiest bridges in the county

Bridge	Built	Vehicles/day	Condition
Taft Rd over US-31	1958	281,500	Fair
US-31 over Grand River M-104 Conn	1960	66,750	Fair
US-31 over Gtw RR & M-104	1959	44,375	Fair
US-31 over 3RD St (m-104)	1958	44,375	Fair
I-96 over Br of Sand Creek	1961	36,338	Good
I-96 EB over Deer Creek	1958	36,000	Fair
I-96 WB over Deer Creek	1958	36,000	Fair
I-96 EB over Sand Creek	1957	36,000	Fair
I-96 WB over Sand Creek	1957	36,000	Fair
I-96 EB over Sand Creek	1956	36,000	Fair

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

All of Michigan: Michigan 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.