6 bridges with vertical clearance data on SR-21 in New York. Lowest: 144.0ft.
| Clearance | Carries | Crosses | Location | Built | Map |
|---|---|---|---|---|---|
| 144.0ft | Rte 21 | Kent Street, Csx Trans/A | .2 Mi N Jct Sh21 & Brg Cl | 1994 | Map |
| 149.3ft | Rte 21 | Erie Canal Heritage Trai | Jct Of Rte 21 + Barge C | 1961 | Map |
| 162.4ft | Rte 21 | 86I 17 64044055, Rte I86 | Jct Rts 17 + 36 | 1970 | Map |
| 168.3ft | Rte 21 | 90Ix, Rte I90 | Jct Rts 21 + Nys Thruway | 2019 | Map |
| 222.4ft | Rte 21 | Norfolk Southern | Route 21 In Hornell | 1995 | Map |
| 1072.5ft | Rte 21 | Cohocton River | 3.0 Mi E Of Wayland | 2023 | Map |