Low clearance bridges on US-1 Bypass
10 spots where US-1 Bypass has less than 16 ft of clearance, in the order you drive them from south to north. The lowest is 14 ft 3 in in North Carolina, 0.3 mi S Junction SR1214. 6 are under 15 ft.
Posted signs and your permit come first. These are the clearances states reported to the federal National Bridge Inventory in 2025. Repaving, snow and new work can lower them.
North Carolina · 4 under 16 ft
Pennsylvania · 2 under 16 ft
New Hampshire · 4 under 16 ft
| Clearance | Where | County |
|---|---|---|
| 15 ft 5 in | Under NH 33 · 0.6 mi from Junction RT 1 · Map | Rockingham County |
| 15 ft 6 in | Under Islington Street · 1.0 mi from Junction US 1 · Map | Rockingham County |
| 15 ft 5 in | Under Woodbury Avenue · 0.6 mi from Maine SL · Map | Rockingham County |
| 15 ft 8 in | Under Maplewood Avenue · .8 mi from Junction NH 16 · Map | Rockingham County |