High Bridge carrying road over East Drive and Afon Llifon is a Grade II listed building in the Gwynedd local planning authority area, Wales. First listed on 8 September 1998. Bridge.

High Bridge carrying road over East Drive and Afon Llifon

WRENN ID
over-alcove-raven
Grade
II
Local Planning Authority
Gwynedd
Constituency
Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
Country
Wales
Date first listed
8 September 1998
Type
Bridge
Address
High Bridge carrying road over East Drive and Afon Llifon, Glynllifon, Llandwrog
OS grid reference
SH 463 559
Coordinates
53.07856, -4.29494
Source
Cadw listing

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

Description

High Bridge is a tall single-arched rubble bridge that carries a road over East Drive and the Afon Llifon. It features a regulating course, voussoirs, keystones, and abutments. The broad arch spans the river and the former east drive on the east bank.

Local climate

High Bridge carrying road over East Drive and Afon Llifon sits in one of the wettest parts of the UK, with an average of 1,370 mm of rain a year. This makes it wetter than 97% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 98% of listed buildings.

It experiences an average of 20 freeze-thaw cycles a year, fewer than 78% of listed buildings. Of these, 9 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.

More on this building

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  • Detailed attributes — period, style, materials, features
  • Flood risk assessment
  • Radon risk assessment
  • Weather exposure and heating demand — rain and frost month by month and year by year, wind direction, solar and humidity
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Nearby listed buildings

  1. Stone Bridge carrying East Drive over Afon Llifon immediately north of one of the iron footbridges Grade II 115 m
  2. Rubble Footbridge between Iron footbridge and Cave Grade II 172 m
  3. Penrallt Grade II 298 m
  4. Washouses to Nos. 1 & 2 Penrallt Grade II 302 m
  5. East Lodge Grade II 323 m
  6. Rubble Footbridge uphill from Hermitage Grade II 433 m
  7. Hermitage Grade II 441 m
  8. Rubble Footbridge below the Hermitage Grade II 449 m
  9. Pair of Stone Bridges beside Iron Bridge and below Hermitage Grade II 451 m
  10. Iron Footbridge over Afon Llifon Grade II 461 m