Low clearance bridges in Rockingham County, New Hampshire
5 spots where an interstate or US highway in Rockingham County has less than 16 ft of clearance, lowest first. The lowest is 15 ft 0 in on I-93, 0.7 mi N Derry T / L.
Posted signs and your permit come first. These are the clearances New Hampshire reported to the federal National Bridge Inventory in 2025. Repaving, snow and new work can lower them.
| Clearance | Where | Highway |
|---|---|---|
| 15 ft 0 in | Under NH102 · 0.7 mi N Derry T / L · Map | I-93 |
| 15 ft 5 in | Under NH 33 · 0.6 mi from Junction RT 1 · Map | US-1 Bypass |
| 15 ft 5 in | Under Woodbury Avenue · 0.6 mi from Maine SL · Map | US-1 Bypass |
| 15 ft 6 in | Under Islington Street · 1.0 mi from Junction US 1 · Map | US-1 Bypass |
| 15 ft 8 in | Under Maplewood Avenue · .8 mi from Junction NH 16 · Map | US-1 Bypass |