Pontiac Lake Road over Clinton River
Oakland County, Michigan · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Pontiac Lake Road over Clinton River in Oakland County, Michigan, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 9 (excellent condition) on the 0-9 scale.
- It was built in 2024, making it 1 years old at the 2025 inventory.
- It carries about 10,500 vehicles a day (traffic count year 2024).
- Its listed owner is the county highway agency.
- It is one of 215 of the 513 inventoried bridges in Oakland County rated good (41.9%); 35 (6.8%) 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 good (culvert 2 to 9).
- Status change: its 2024 load posting has been removed.
- Its most recent inspection on record is dated December 2024, on a 24-month routine inspection cycle.
- A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.
View this bridge on a map → (42.6528, -83.3975)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Culvert | 2 | 9 | Excellent condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 41 ft |
| Location | Waterford Twp Sec 21 |
| NBI structure number | 000000000013810 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | December 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 Oakland County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-696 over I-75 & 4 Ramps | 1971 | 209,200 | Poor |
| I-696 over N Service Rd | 1971 | 209,200 | Fair |
| I-696 over N-s Service Road | 1982 | 192,100 | Fair |
| I-96 EB over 9 Mile Rd | 1971 | 182,700 | Fair |
| I-96 WB over 9 Mi Rd | 1972 | 182,700 | Fair |
| I-696 over Drake Rd | 1960 | 180,375 | Good |
All bridges nearby: Oakland County, MI bridge conditions · every bridge in Oakland County · Michigan bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.