SR 21R D Off Ramp over Dundee Canal
Chatham County, Georgia · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- SR 21R D Off Ramp over Dundee Canal in Chatham County, Georgia, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 7 (good condition) on the 0-9 scale.
- It was built in 1979, making it 46 years old at the 2025 inventory.
- It carries about 4,050 vehicles a day (traffic count year 2024).
- Its listed owner is the state highway agency.
- It is one of 199 of the 268 inventoried bridges in Chatham County rated good (74.3%); 3 (1.1%) are rated poor.
- 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 → (32.09834, -81.14398)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 7 | Good condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 34 ft |
| Location | City of Garden City |
| NBI structure number | 000000005100400 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Georgia department of transportation.
Busiest bridges in Chatham County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-95 (nbl) over SR 26 (US 80) | 1976 | 96,600 | Good |
| I-95 (nbl) over Pipe Makers Canal | 1976 | 96,600 | Good |
| I-95 over Ogeechee River Overflow | 1970 | 93,400 | Good |
| I-95 over Ogeechee River Trib | 1970 | 93,400 | Good |
| I-95 over SR 204 | 1970 | 93,000 | Fair |
| I-95 over Little Ogeechee River | 1969 | 93,000 | Fair |
All bridges nearby: Chatham County, GA bridge conditions · every bridge in Chatham County · Georgia bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.