US-131 SB over Bog
Wexford County, Michigan · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- US-131 SB over Bog in Wexford County, Michigan, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 2000, making it 25 years old at the 2025 inventory.
- It carries about 3,575 vehicles a day (traffic count year 2007).
- Its listed owner is the state highway agency.
- It is one of 43 of the 64 inventoried bridges in Wexford County rated fair (67.2%); 5 (7.8%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its class is unchanged from 2024 (fair), but component ratings moved: superstructure 7 to 6, substructure 7 to 6.
- 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 → (44.29979, -85.39181)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 7 | 6 | Satisfactory condition |
| Substructure | 7 | 6 | Satisfactory condition |
Bridge details
| Structure | Prestressed concrete stringer or multi-beam girder |
| Length | about 243 ft |
| Location | Haring Twp Sec 15 |
| NBI structure number | 000000000012999 |
| 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 Wexford County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| E 36 Rd over US-131 NB | 1997 | 77,777 | Fair |
| US-131 Bl|mitchell over Clam River | 1935 | 23,406 | Fair |
| M-115 over Cadillac Canal | 1957 | 12,589 | Fair |
| Mackinaw Trail Hwy over US-131 Nb|m-55 EB | 1966 | 12,310 | Fair |
| Chestnut over Clam River | 1968 | 12,000 | Poor |
| M-55|e 38 Rd over US-131 NB | 1997 | 10,400 | Fair |
All bridges nearby: Wexford County, MI bridge conditions · every bridge in Wexford County · Michigan bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.