Bridge conditions in Marquette County, Michigan
147 inventoried bridges · 19 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
About one in 8 bridges in Marquette County is rated in poor condition: 19 of 147 on the federal inventory, one of the higher shares in Michigan.
- 19 of the 147 bridges in Marquette County, Michigan, are rated in poor condition (12.9%) in the 2025 National Bridge Inventory, as of .
- 69 bridges (46.9%) are rated good and 59 (40.1%) fair.
- The median Marquette County bridge was built in 1979.
- The busiest poor-rated bridge is M-553 over Canadian National RR (built 1976), carrying about 7,200 vehicles a day.
Good 46.9% · Fair 40.1% · Poor 12.9% of 147 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 |
|---|---|---|---|
| M-553 over Canadian National RR | 1976 | 7,200 | Poor |
| M-94|co Rd 460 over Canadian National RR | 1976 | 2,726 | Poor |
| M-35 over Br Warner Creek | 1964 | 2,505 | Poor |
| County Rd 581 over West Br Escanaba River | 1928 | 900 | Poor |
| County Rd 581 over Rocky Creek | 1940 | 890 | Poor |
| County Rd 557 over Little West River | 1928 | 525 | Poor |
| County Rd 478 over Greenwood Reservoir | 1972 | 350 | Poor |
| Oc Road (old US41) over Nelson Creek | 1935 | 300 | Poor |
| Le Road over Trout Falls Creek | 1938 | 140 | Poor |
| Kk Road over Salmon - Trout River | 1947 | 137 | Poor |
| Li Road over Michigamme River | 1930 | 126 | Poor |
| Jad Road (old M41) over Carp River | 1946 | 100 | Poor |
| County Rd 438 over N Br W Br Escanaba R | 1928 | 67 | Poor |
| Eyz Road over E Branch Escanaba River | 1925 | 40 | Poor |
| County Rd 438 over W Br Escanaba River | 1959 | 35 | Poor |
| Lll Road (old M95) over Michigamme River | 1934 | 10 | Poor |
| Black River Falls over Black River | 1930 | 10 | Poor |
| Escanaba River Rd over Sawmill Creek | 1985 | 10 | Poor |
| Old Camp 4 Road over Sand River | 1980 | 5 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Us-41|m-28 over Carp River | 1936 | 23,600 | Fair |
| US-41 over Carp Creek | 1979 | 14,675 | Good |
| US-41 over Ls&i RR | 1979 | 13,542 | Fair |
| M-28 over Chocolay River | 2005 | 9,335 | Good |
| US-41 NB over Carp River | 1955 | 8,662 | Fair |
| US-41 SB over Carp River | 1958 | 8,662 | Fair |
| M-553 over Canadian National RR | 1976 | 7,200 | Poor |
| US-41 over Cherry Creek | 1952 | 6,982 | Fair |
| US-41 over Big Creek | 1952 | 6,982 | Good |
| M-553 over Carp River | 2002 | 6,595 | Good |
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.