Redhill Tunnel North Portal is a Grade II listed building in the Rushcliffe local planning authority area, England. First listed on 5 May 1981. Tunnel entrance.
Redhill Tunnel North Portal
- WRENN ID
- tall-lime-hawthorn
- Grade
- II
- Local Planning Authority
- Rushcliffe
- Constituency
- Rushcliffe MP: James Naish (Lab)
- Country
- England
- Date first listed
- 5 May 1981
- Type
- Tunnel entrance
- Address
- Redhill Tunnel North Portal, Thrumpton Hall Park, Thrumpton
- OS grid reference
- SK 495 307
- Coordinates
- 52.87203, -1.26561
- Source
- Historic England listing
Description
The Redhill Tunnel North Portal consists of a pair of tunnel entrances, with the east tunnel dating from 1840 and the west tunnel from 1875, both featuring architectural enhancements from 1875. The engineers involved were Thomas Jackson Woodhouse and Charles Vignoles for the 1840 entrance, and J.S. Crossley and J. A. McDonald for the 1875 entrance.
Constructed from rock-face ashlar, the east entrance showcases a castellated and machicolated parapet that rises above a single central shield. To the right, there is an octagonal castellated turret with a corbel table, adorned with a single slit ventilator. Adjacent to this turret is a smaller circular castellated turret, also with a corbel table, featuring a decorative arrow loop. Flanking the entrance are lower sections of wall that have similar parapets.
The west entrance mirrors the east, with a similar parapet on the left, an octagonal turret on the left, and a circular turret on the right. Each side is bordered by sections of stepped castellated wall that end in smaller circular turrets, all of which are wider at the base.
The Midland Counties Railway was opened on 5 May 1840, and the Midland Railway was widened between Trent and Leicester in 1875. According to Pevsner, the original portal from 1839 had one tower, which was replicated to create a symmetrical composition in 1901 when the railway line was doubled.
Local climate
Redhill Tunnel North Portal sits in a drier-than-average part of the UK, with an average of 720 mm of rain a year. This makes it drier than 82% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 83% of listed buildings.
It experiences an average of 37 freeze-thaw cycles a year, more than 66% of listed buildings. Of these, 17 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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