I-75 SB over Otter Creek
Monroe County, Michigan · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- I-75 SB over Otter Creek in Monroe County, Michigan, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 5 (fair condition) on the 0-9 scale.
- It was built in 2024, making it 1 years old at the 2025 inventory.
- It carries about 29,300 vehicles a day (traffic count year 2017).
- Its listed owner is the state highway agency.
- It is one of 166 of the 299 inventoried bridges in Monroe County rated fair (55.5%); 40 (13.4%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- It was rated poor in the 2024 inventory and is now fair (deck 4 to 8, superstructure 5 to 9).
- Its most recent inspection on record is dated December 2024, on a 6-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 → (41.84419, -83.41976)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 4 | 8 | Very good condition |
| Superstructure | 5 | 9 | Excellent condition |
| Substructure | 5 | 5 | Fair condition |
Bridge details
| Structure | Prestressed concrete single box beam |
| Length | about 240 ft |
| Location | 8.7 Mi NE Ohio State Line |
| NBI structure number | 000000000007163 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | December 2024 |
| Inspection interval (item 91) | 6 months |
| Scour (item 113) | 5: foundations stable, scour within the limits of the footing or piles |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Michigan department of transportation.
Busiest bridges in Monroe County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-75 over Conrail Raisin R Front | 1955 | 67,800 | Poor |
| I-75 over NS & Cn Railroad | 1956 | 65,200 | Good |
| I-75 over Norfolk Southern RR | 1955 | 65,200 | Fair |
| I-75 over Sandy Creek Rd | 1955 | 65,200 | Fair |
| I-75 over Paper Co Water Mains | 1955 | 63,962 | Fair |
| I-75 over Norfolk Southern RR | 1955 | 63,962 | Fair |
All bridges nearby: Monroe County, MI bridge conditions · every bridge in Monroe County · Michigan bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.