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Bridge conditions in Allegan County, Michigan

245 inventoried bridges · 41 rated poor · 2025 National Bridge Inventory

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

Allegan County has 41 bridges rated poor out of 245 inventoried, a 16.7% share that puts it well above the national rate of about 7%.

41 of the 245 bridges in Allegan County, Michigan, are rated in poor condition (16.7%) in the 2025 National Bridge Inventory, as of August 20, 2026.
60 bridges (24.5%) are rated good and 144 (58.8%) fair.
The median Allegan County bridge was built in 1974.
The busiest poor-rated bridge is US-131 SB over Grand Elk RR (built 1960), carrying about 27,941 vehicles a day.

Good 24.5% · Fair 58.8% · Poor 16.7% of 245 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
US-131 SB over Grand Elk RR	1960	27,941	Poor
I-196 EB over CSX RR	1972	9,123	Poor
M-40 M-89 over Kalamazoo River	1938	8,300	Poor
142ND Ave over Red Run Drain	1973	8,204	Poor
18TH St over Red Run Drain	1970	7,600	Poor
Division Street over Rabbit River	1940	3,443	Poor
60TH Street over Kuipers Drain	1984	1,845	Poor
144TH Ave over US-131	1957	1,812	Poor
Ottogan Street over S Br Macatawa River	1969	1,580	Poor
N North Street over Kalamazoo River	1980	1,500	Poor
118TH Ave over Swan Creek	1924	1,077	Poor
Riverside Road over Orchard Creek	1969	1,042	Poor
147TH Ave over N Br Macatawa River	1990	896	Poor
62ND Street over Leveridge Drain	1972	754	Poor
Williams Road over Kalamazoo River	1968	714	Poor
130TH Ave over Rabbit River	1971	682	Poor
147TH Ave over Peters Drain	1987	600	Poor
140TH Ave over Kleinheksel Drain	1970	554	Poor
46TH Street over S Br Macatawa River	1978	550	Poor
103RD Ave over N Br of Black River	1965	444	Poor
16TH Street over Red Run Drain	1974	436	Poor
64TH Street over N Br of Black River	1966	324	Poor
114TH Ave over Miner Creek Drain	1974	300	Poor
7TH Street over Rabbit River	1971	300	Poor
140TH Ave over Red Run Drain	1974	279	Poor
70TH Street over M Br Black River	1971	277	Poor
68TH Street over N Br of Black River	1968	273	Poor
16TH Street over Pierce Drain	1974	270	Poor
20TH Street over Red Run Drain	1972	245	Poor
107TH Ave over Scott Creek	1974	193	Poor
16TH Street over Miller Creek	1978	178	Poor
21ST Street over Little Rabbit River	1973	168	Poor
144TH Ave over Little Rabbit River	1973	147	Poor
144TH Ave over S Br Macatawa River	1984	147	Poor
Russcher Road over S Br Macatawa River	1981	141	Poor
116TH Ave over Leveridge Drain	1973	125	Poor
133RD Avenue over Rabbit River	1981	122	Poor
14TH Street over Miller Creek	1969	100	Poor
107TH Ave over Swan Creek	1974	55	Poor
47TH Street over S Br Macatawa River	1926	36	Poor
63RD Street over Spicebush Creek	1973	32	Poor

Busiest bridges in the county

Bridge	Built	Vehicles/day	Condition
US-131 NB over Kalamazoo River	1996	27,941	Fair
US-131 SB over Kalamazoo River	1996	27,941	Fair
US-131 NB over Grand Elk RR	1960	27,941	Fair
US-131 SB over Grand Elk RR	1960	27,941	Poor
I-196 E & US-31 N over Kalamazoo River	1964	24,400	Fair
M-89 (allegan St) over Kalamazoo Riv Mill Race	2012	21,300	Fair
US-131 SB over Rabbit River	1957	18,817	Fair
I-196 over Plummerville Creek	2010	18,600	Good
US-131 NB over Grand Elk RR	1958	18,376	Fair
US-131 SB over Grand Elk RR	1958	18,376	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.