Marion Spence Road over SR 417 (I-575) Nbl
Cherokee County, Georgia · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Marion Spence Road over SR 417 (I-575) Nbl in Cherokee County, Georgia, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
- It was built in 1985, making it 40 years old at the 2025 inventory.
- It carries about 323 vehicles a day (traffic count year 2024).
- Its listed owner is the state highway agency.
- It is one of 136 of the 164 inventoried bridges in Cherokee County rated good (82.9%); 0 (0.0%) 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 March 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 → (34.35985, -84.39019)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Prestressed concrete stringer or multi-beam girder |
| Length | about 201 ft |
| Location | 2.5 Mi NW of Ball Ground |
| NBI structure number | 000000005700880 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | March 2024 |
| 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 Georgia department of transportation.
Busiest bridges in Cherokee County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-75 Nbl over Clark Creek | 1976 | 115,000 | Good |
| I-575 (nbl ) over Noonday Creek | 1982 | 105,000 | Good |
| I-575 (nbl) over CR 416 Town Lake Pkwy | 1982 | 105,000 | Good |
| I-575 (sbl) over Sharp Mountain Creek | 1985 | 89,100 | Good |
| I-575 (sbl) over CSX RR - Etowah River | 1982 | 86,500 | Good |
| I-575 (nbl) over Little River | 1982 | 86,000 | Good |
All bridges nearby: Cherokee County, GA bridge conditions · every bridge in Cherokee County · Georgia bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.