Summers Road over Cn North America
Lapeer County, Michigan · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Summers Road over Cn North America in Lapeer County, Michigan, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 2004, making it 21 years old at the 2025 inventory.
- It carries about 180 vehicles a day (traffic count year 2018).
- Its listed owner is the county highway agency.
- It is one of 89 of the 163 inventoried bridges in Lapeer County rated fair (54.6%); 13 (8.0%) 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 July 2023, 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 → (43.02645, -83.10723)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 8 | 8 | Very good condition |
| Substructure | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Prestressed concrete multiple box beam |
| Length | about 115 ft |
| Location | Sec 18 Imlaytwp |
| NBI structure number | 000000000005430 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | July 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | N: not over a waterway |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Michigan department of transportation.
Busiest bridges in Lapeer County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| M-24|n Main St over Farmers Creek | 2015 | 28,600 | Good |
| M-53|van Dyke Rd over North Branch Clinton Riv | 1999 | 20,247 | Fair |
| M-53|van Dyke Rd over Belle River | 1963 | 19,650 | Fair |
| I-69 EB over Newark Rd | 1983 | 18,845 | Fair |
| I-69 EB over Winslow Rd | 1983 | 18,845 | Fair |
| I-69 WB over Winslow Rd | 1983 | 18,845 | Fair |
All bridges nearby: Lapeer County, MI bridge conditions · every bridge in Lapeer County · Michigan bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.