7 bridges with vertical clearance data on 685 in Virginia. Lowest: 162.4ft.
| Clearance | Carries | Crosses | Location | Built | Map |
|---|---|---|---|---|---|
| 162.4ft | Baltimore Rd./685 | Rte. I-77 | 0.05 Rte702; 2.70 Rte704 | 1976 | Map |
| 162.4ft | Chalk Level Road | Nbl & Sbl Rte 29 Bp | 0.45-Chtm / 0.10-Rt.703 | 1964 | Map |
| 173.2ft | Ball Park Rd.685 | Craig Creek | 0.15-Rt 615; 0.45-Rt 818 | 1887 | Map |
| 989.8ft | Lehigh Rd | Little Calfpasture River | 0.48 Rt 684-0.55 Rt 42 | 2016 | Map |
| 3277.6ft | Keagy Road/685 | Barnhart Creek | 0.70-Rte1362; 0.74-Rte692 | 1950 | Map |
| 3277.6ft | Chalk Level Road | Whitethorn Creek | 0.70 To 686 - 0.70 To 690 | 2014 | Map |
| 3277.6ft | Chalk Level Road | Georges Creek | 2.0-Rt 927-0.6-Rt 686 | 2019 | Map |