12 bridges with vertical clearance data on 638 in Virginia. Lowest: 143.0ft.
| Clearance | Carries | Crosses | Location | Built | Map |
|---|---|---|---|---|---|
| 143.0ft | Atlee Road | Cool Spring Connector | 0.17 Fr 637 & 0.73 To 301 | 2016 | Map |
| 162.4ft | Murphy'S Mill Rd. | Rte. 58 Bypass | 0.30 Mi.Fr.Int.Rte. 635 | 1974 | Map |
| 164.7ft | Junction Rd | I-81 | 0.50 To 824 - 0.05 To 757 | 1965 | Map |
| 166.7ft | Atlee Road | Rte I 295 | 0.10 To 1401 & .3 To 1413 | 1978 | Map |
| 169.9ft | Rolling Road | Franconia-Springfield Pk | 00.49Fr6010/00.35To636 | 1992 | Map |
| 178.1ft | Rolling Road | Fairfax County Pkwy. | 0.50Frbarta 0.50To7900 | 2012 | Map |
| 227.4ft | Rolling Road | Southern Railroad | 00.01 652/00.13 3647 | 1969 | Map |
| 228.0ft | Pohick Road | R.F. & P. Rr And I-95 | 1.4 Rt. 1 / 00.08 641 | 1993 | Map |
| 237.2ft | Fiery Run Rd | Ns Railway | 0.05 To 55 - 0.10 To 657 | 1997 | Map |
| 243.1ft | Atlee Road | Csx Transp | 0.10 Fr 637 & 0.80 To 301 | 2016 | Map |
| 989.8ft | Blackburn Road | Cow Branch | 0.10Fr.1392 / 0.55To1391 | 2012 | Map |
| 3277.6ft | Wheelers Spring Ro | Little Cub Creek | 1.39 To 628 - 0.31 To 691 | 2016 | Map |