19 bridges with vertical clearance data on US-321 in North Carolina. Lowest: 147.3ft.
| Clearance | Carries | Crosses | Location | Built | Map |
|---|---|---|---|---|---|
| 147.3ft | Us321 Sbl | Sr1848 | 0.5 Mi.N.Jct.Nc275 | 1986 | Map |
| 149.0ft | Us321 Nbl | Sr1848 | 0.5 Mi. N. Jct. Nc275 | 1986 | Map |
| 149.9ft | Us321 Bus | Nc150 | 0.07 Mi. N. Jct. Sr1250 | 1955 | Map |
| 153.9ft | Us321 Nbl | Sr1262 | 1.1 Mi. S. Jct. Nc27 | 1992 | Map |
| 154.9ft | Us321 Nbl | Sr1002 | 125 Ft.S.Jct.Sr1763 | 1969 | Map |
| 158.1ft | Us321 Sbl | Sr1002 | 150 Ft.S.Jct.Sr1763 | 1953 | Map |
| 158.1ft | Us321 Nbl | Sr1933 | .1 Mi.S.Jct.Sr1164 | 1989 | Map |
| 159.8ft | Us321 Sbl | Sr1933 | .1 Mi.S.Jct.Sr1164 | 1989 | Map |
| 159.8ft | Us321 Nbl | Nc10 | 1.6 Mi. N. Jct. Sr2019 | 1997 | Map |
| 162.4ft | Us321 Bus | Us321 | 0.27 Mi. N. Jct. Sr1605 | 1987 | Map |
| 163.1ft | Us321Bus,Nc275/279 | Us321 | 0.1 Mi. E. Jct. Sr3061 | 1986 | Map |
| 167.3ft | Us321 Nbl | Us321 Bus | 3.4 Mi. S. Jct. Sr1262 | 1992 | Map |
| 168.0ft | Us321 Sbl | Us321 Bus | 3.4 Mi. S. Jct. Sr1262 | 1992 | Map |
| 170.6ft | Us321 Bus | Us321 | 0.2 Mi. E. Jct. Sr1279 | 1991 | Map |
| 199.8ft | Us321 Sbl | Sr1262 | 1.1 Mi. S. Jct. Nc27 | 1992 | Map |
| 206.4ft | Us321 Sbl | Nc10 | 1.6 Mi. N. Jct. Sr2019 | 1997 | Map |
| 220.8ft | Us321 Bus, | Seaboard Coastline Rr | 0.15 Mi. N. Jct. Sr1419 | 1955 | Map |
| 230.0ft | Us321 S | Southern Railway | 0.18 Mi. N. Jct.Us29&74 | 1989 | Map |
| 231.0ft | Us321 N | Southern Railway | 0.18 Mi. N. Jct. Us29&74 | 1988 | Map |