13 bridges with vertical clearance data on 621 in Virginia. Lowest: 162.4ft.
| Clearance | Carries | Crosses | Location | Built | Map |
|---|---|---|---|---|---|
| 162.4ft | Ropers Church Rd | Rte I 64 Wbl | .61 To James City Cl | 1972 | Map |
| 163.1ft | Merrimans Lane | Va 37 | 1.25 To 622 - 1.50 To 50 | 1977 | Map |
| 163.1ft | Manakin Road | Interstate 64 | 0.71 Fr 694 & 0.53 To 626 | 1967 | Map |
| 164.0ft | Ropers Church Road | Rte I 64 Ebl | 0.61 To James City Cl | 1972 | Map |
| 164.7ft | Dixie Bridge Road | Route I-85 | .69 Fr #1 & .99 Lunenb C | 1969 | Map |
| 172.2ft | Balls Ford Road | Prince William Pkwy | 0.39Frwell 0.4 To Doane | 2023 | Map |
| 226.4ft | Cottontownrd/621 | N&W Railway | 0.90 Rt 660; 0.15 Rt 221 | 1990 | Map |
| 989.8ft | Prospect Hill Rd. | Nomini Creek | 0.8M Rt 202 - 1.4M Rt 600 | 2014 | Map |
| 989.8ft | Bull Run P.O. Road | Trib. Elklick Run | .60Fr620 1.2 To 2738 | 2011 | Map |
| 3277.6ft | Craigcreekrd/621 | Craig Creek | 4.70-Rt460; 6.70-Craig Co | 1998 | Map |
| 3277.6ft | Cottontown Rd /621 | Ivy Creek | 0.40?Rt 1240;0.25?Rt 884 | 2020 | Map |
| 3277.6ft | Country Club Road | Taylors Creek | 0.63 Fr 778 & 0.8 To 638 | 2015 | Map |
| 3277.6ft | Roaring Run Road | Roaring Run | .30-Rte615; 2.65-Alegco | 2016 | Map |