Pair of Second World War concrete roadblock plinths east of Hoo St Werburgh is a Grade II listed building in the Medway local planning authority area, England. First listed on 16 November 2020. Roadblock.

Pair of Second World War concrete roadblock plinths east of Hoo St Werburgh

WRENN ID
night-barrel-nightshade
Grade
II
Local Planning Authority
Medway
Constituency
Rochester and Strood MP: Lauren Edwards (Lab)
Country
England
Date first listed
16 November 2020
Type
Roadblock
OS grid reference
TQ 789 728
Coordinates
51.42622, 0.57206
Source
Historic England listing

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

Description

This is a pair of concrete roadblock plinths built in 1940 as part of the Hoo Stop Line, created in response to the threat of a German invasion during the Second World War.

The plinths are located to the east of the village of Hoo St Werburgh, on either side of a track that runs north from Stoke Road. Each plinth is a large rectangular block of reinforced concrete, approximately 1.7 meters high, 4 meters long, and 1.2 meters wide. They feature a tapering face to the south and have a deep slot that divides each plinth in two, designed to hold a horizontal steel rail, often repurposed from railway tracks, which would serve as a strong but removable barrier. The concrete was poured into shuttering made from corrugated metal sheeting, leaving a textured surface on the blocks.

Local climate

Pair of Second World War concrete roadblock plinths east of Hoo St Werburgh 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 84% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 74% of listed buildings.

It experiences an average of 23 freeze-thaw cycles a year, fewer than 76% of listed buildings. Of these, 11 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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