14 bridges with vertical clearance data on SR-21 in Georgia. Lowest: 169.0ft.
| Clearance | Carries | Crosses | Location | Built | Map |
|---|---|---|---|---|---|
| 169.0ft | Jimmy Deloach Park | Crossgate Road | Port Wentworth City Limit | 2015 | Map |
| 170.6ft | Jimmy Deloach Pkwy | Grange Road | Port Wentworth City Limit | 2015 | Map |
| 177.5ft | Jimmy Deloach Pkwy | Sonny Dixon Interchange | Port Wentworth City Limit | 2015 | Map |
| 218.2ft | Sr 21 | Csx Railroad (635128B) | In Rincon City Limits | 1960 | Map |
| 229.0ft | Sr 21 (Nbl) | Csx Railroad | 1 Mi N Of Port Wentworth | 1980 | Map |
| 230.0ft | Sr 21 (Sbl) | Csx Railroad | 1 Mi N Of Port Wentworth | 1980 | Map |
| 237.2ft | Jimmy Deloach Pkwy | Norfolk Southern Railroa | Port Wentworth City Limit | 2015 | Map |
| 237.2ft | Sr 21 (Sbl) | Csx Railroad | 0.75 Mi S Of Springfield | 1997 | Map |
| 241.5ft | Sr 21 (Sbl) | Ga. Railroad | 3 Miles South Of Screven | 2007 | Map |
| 242.5ft | Sr 21 Nbl | Ga. Railroad | 3 Miles South Of Screven | 2007 | Map |
| 251.6ft | Sr 21 (Sbl) | Georgia Midlands Rr | 6.4 Miles Se Of Sylvania | 2003 | Map |
| 259.8ft | Sr 21 (Nbl) | Csx Railroad | 0.75 Mi Of Springfield | 1997 | Map |
| 264.8ft | Jimmy Deloach Pkwy | Sr-30 (Bonny Bridge Road | Port Wentworth City Limit | 2015 | Map |
| 275.6ft | Sr21 (Nbl) | Georgia Midlands Rr | 6.4 Miles Se Of Sylvania | 2003 | Map |