Mountain Hill Rd over I-185 @20.10N(SR 411)
Harris County, Georgia · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Mountain Hill Rd over I-185 @20.10N(SR 411) in Harris 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 1978, making it 47 years old at the 2025 inventory.
- It carries about 1,420 vehicles a day (traffic count year 2024).
- Its listed owner is the state highway agency.
- It is one of 74 of the 99 inventoried bridges in Harris County rated good (74.7%); 1 (1.0%) 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 September 2023, 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 → (32.67877, -84.98938)
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 | Continuous prestressed concrete single box beam |
| Length | about 412 ft |
| Location | 8.5 Mi SW of Hamilton |
| NBI structure number | 000000014500330 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | September 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 Georgia department of transportation.
Busiest bridges in Harris County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-85 (sbl) over Chattahoochee River | 1961 | 44,900 | Fair |
| I-85 (nbl) over Chattahoochee River | 1961 | 41,500 | Fair |
| I-185 (nbl) over Standing Boy Creek | 1978 | 39,000 | Good |
| I-185 over Mulberry Creek O/f | 1978 | 33,700 | Good |
| I-185 (nbl) over Mulberry Creek | 1978 | 33,700 | Good |
| I-185 (nbl) over S-2651 L. Blue Springs R | 1978 | 33,700 | Fair |
All bridges nearby: Harris County, GA bridge conditions · every bridge in Harris County · Georgia bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.