AI-verified clearance data
Parking clearance heights in Portsmouth, New Hampshire
AI-verified clearance heights for 5 low-clearance bridges in Portsmouth, New Hampshire. Enter your vehicle height on the interactive map to see what fits.
0 parking garages
0 tunnels
5 low bridges
Parking garages (0)
None indexed in this city yet.
Tunnels (0)
None indexed in this city yet.
Low-clearance bridges (5)
Low clearance: GREAT WORKS RIVER under HIGH ST
11'0"
GREAT WORKS RIVER
FHWA NBI; under-bridge clearance; built 1964; bridge carries HIGH ST
Source: FHWA National Bridge Inventory
Low clearance: GREAT WORKS RIVER under MADISON ST
14'0"
GREAT WORKS RIVER
FHWA NBI; under-bridge clearance; built 1963; bridge carries MADISON ST
Source: FHWA National Bridge Inventory
Low on-bridge clearance: HWY MAIN ST
13'6"
HWY MAIN ST
FHWA NBI; on-bridge clearance; built 1890
Source: FHWA National Bridge Inventory
Low on-bridge clearance: HWY MAIN ST
14'5"
HWY MAIN ST
FHWA NBI; on-bridge clearance; built 1909
Source: FHWA National Bridge Inventory
Low clearance: TR AMESBURY RIVERWALK under I 495 NB
13'4"
TR AMESBURY RIVERWALK
FHWA NBI; under-bridge clearance; built 2016; bridge carries I 495 NB
Source: FHWA National Bridge Inventory
⚠ Always verify at the sign.
Posted clearances on this page are for planning. The only authoritative number
is the sign at the garage entrance or bridge approach. Clearances can change
due to re-paving, renovations, or weather. If you spot an inaccuracy,
open the map and use the "Report clearance" button.