Bridge at Sy 6924 7330 is a Grade II listed building in the Dorset local planning authority area, England. Bridge.

Bridge at Sy 6924 7330

WRENN ID
open-rampart-dust
Grade
II
Local Planning Authority
Dorset
Constituency
South Dorset MP: Lloyd Hatton (Lab)
Country
England
Type
Bridge
Address
Bridge at Sy 6924 7330, New Ground, Portland
OS grid reference
SY 692 733
Coordinates
50.55866, -2.43561
Source
Historic England listing

Also on this page: flood risk · radon risk · weather exposure · detailed attributes ↓

Description

This is a road bridge built in 1882 over a former mineral tramway. It is constructed from heavy squared rock-faced stone and features a segmental arch with rusticated quoins and a keystone supported by plain internal abutments leading to a high offset plinth. The bridge has a heavy square-edged weathered parapet with short stopped pilaster ends, and the inner face of the parapet, facing the road, is made of dressed stone. The north face includes short curved and raked abutments. The roadway is approximately 3 meters wide, and the parapets extend about 10 meters long. This bridge is one of three closely positioned bridges that once facilitated the transport of stone from the quarries on Tophill to the harbour, highlighting the 19th-century industrial activity of the quarries on the island when rail and tramways were vital for transportation.

Local climate

Bridge at Sy 6924 7330 receives an average of 840 mm of rain a year. This makes it wetter than 55% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 77% of listed buildings.

It experiences an average of 13 freeze-thaw cycles a year, fewer than 88% of listed buildings. Of these, 5 follow at least 1 mm of rain in the preceding 48 hours. Average temperatures at this location have risen by 0.3°C per decade since 1991.

Averages for 1991–2020; temperature trend 1991–2025. Figures describe the wider area (a grid cell of roughly 10 km), not the individual site. Contains modified Copernicus Climate Change Service information 2026.

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