Bridge conditions in Iron County, Michigan
54 inventoried bridges · 12 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
Of the 54 Iron County bridges in the federal inventory, 12 carry a poor rating. That 22.2% share is roughly 3x the national average.
- 12 of the 54 bridges in Iron County, Michigan, are rated in poor condition (22.2%) in the 2025 National Bridge Inventory, as of .
- 16 bridges (29.6%) are rated good and 26 (48.1%) fair.
- The median Iron County bridge was built in 1971.
- The busiest poor-rated bridge is W Genesee(old US2) over Iron River Buried (built 1918), carrying about 8,200 vehicles a day.
Good 29.6% · Fair 48.1% · Poor 22.2% of 54 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 |
|---|---|---|---|
| W Genesee(old US2) over Iron River Buried | 1918 | 8,200 | Poor |
| US-2 over Chicagoan Creek | 1929 | 3,653 | Poor |
| M-69 over Michigamme River | 1931 | 1,571 | Poor |
| US-141 over Hemlock River | 1971 | 1,046 | Poor |
| Fh 16 over No Br Paint River | 1955 | 156 | Poor |
| Fh 16 over So Br Paint River | 1955 | 156 | Poor |
| Chicagon Mine Rd over Chicagon Creek | 1900 | 142 | Poor |
| Fas 927 over Paint River | 1962 | 133 | Poor |
| Fas 303 Idlewild over Fortune Creek | 1921 | 130 | Poor |
| Fr 153 Basswood over Cooks Run River | 1922 | 119 | Poor |
| Old US 141 over Hemlock River | 1924 | 103 | Poor |
| Resort Dr over Briar Hill Creek | 1914 | 50 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| W Genesee(old US2) over Iron River Buried | 1918 | 8,200 | Poor |
| US-2|ADAMS St over Iron River | 1997 | 7,655 | Fair |
| US-2 over Chicagoan Creek | 1929 | 3,653 | Poor |
| US-2 over Fortune Lake Outlet | 1942 | 3,653 | Fair |
| M-69 over Paint River | 1924 | 3,080 | Fair |
| US-141 over Paint River | 1970 | 3,039 | Fair |
| Us-2|us-141 over Brule River | 1941 | 3,031 | Fair |
| Us-2|us-141 over Dunn Creek | 1936 | 3,031 | Fair |
| M-69 over Michigamme River | 1931 | 1,571 | Poor |
| 16TH Ave(homer Rd) over Iron River | 1995 | 1,345 | 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.