10 bridges with vertical clearance data on 644 in Virginia. Lowest: 141.4ft.
| Clearance | Carries | Crosses | Location | Built | Map |
|---|---|---|---|---|---|
| 141.4ft | Wide Gap Road | Colliers Creek | 0.00 To 251 & 0.60 To 659 | 1916 | Map |
| 155.5ft | Old Keene Mill Rd | I-95 Sbl & Hov | .25Fr617/.30-Rt.789 | 2000 | Map |
| 163.1ft | Papermill Rd | I-81 | 0.07 Winch Scl - 0.35 717 | 1964 | Map |
| 164.7ft | Franconia Road | Rte.2677-Frontier Drive | 00.20Fr789/01.40To613 | 2001 | Map |
| 168.0ft | Brunswick Drive | I-85 Nbl | .1 Fr 85N .17 To 85S Rmps | 1969 | Map |
| 168.0ft | Brunswick Drive | I-85 Sbl | .17 Fr 85N .1 To 85S Rmps | 1969 | Map |
| 169.0ft | Franconia Road | Rte.789-Loisdale Road | 00.50Fr617/00.20To2677 | 2001 | Map |
| 196.5ft | Franconia Road | Metro & Csx Rwy | 00.00Fr.635/00.05To1320 | 1974 | Map |
| 989.8ft | Old Cifax Rd./644 | Elk Creek | 0.00-Rt665W; 0.01-Rt665E | 2011 | Map |
| 3277.6ft | Bagby Rd. | Maracossic Creek | 0.5M Rte643-1.4M Rte678 | 2013 | Map |