M-66|s Burkett Rd over Middle Br Clam River
Missaukee County, Michigan · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- M-66|s Burkett Rd over Middle Br Clam River in Missaukee County, Michigan, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1929 and reconstructed in 1989, making it 96 years old at the 2025 inventory.
- It carries about 2,466 vehicles a day (traffic count year 2019).
- Its listed owner is the state highway agency.
- It is one of 15 of the 39 inventoried bridges in Missaukee County rated fair (38.5%); 4 (10.3%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated June 2024, on a 24-month routine inspection cycle.
- A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.
View this bridge on a map → (44.16793, -85.15301)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 5 | 5 | Fair condition |
| Substructure | 5 | 5 | Fair condition |
Bridge details
| Structure | Concrete tee beam |
| Length | about 26 ft |
| Location | .3 Mi N of Osceola Co Lin |
| NBI structure number | 000000000007023 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | June 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 8: foundations stable, scour above the top of the footing |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Michigan department of transportation.
Busiest bridges in Missaukee County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| M-55|w Watergate R over Clam River | 1973 | 5,113 | Fair |
| M-55|e Houghton La over W Br Muskegon River | 1931 | 4,338 | Fair |
| M-55|e Houghton La over Muskegon River | 1935 | 4,338 | Fair |
| M-66|w Stoney Corn over N Br Clam River | 1933 | 4,081 | Fair |
| M-66 over Clam River | 1929 | 2,696 | Fair |
| Forward Road over Clam River | 1958 | 1,316 | Poor |
All bridges nearby: Missaukee County, MI bridge conditions · every bridge in Missaukee County · Michigan bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.