Bridge No. 30, Niddry, Union Canal is a Grade C listed building in the West Lothian local planning authority area, Scotland. First listed on 25 June 1980.

Bridge No. 30, Niddry, Union Canal

WRENN ID
broken-obsidian-sunrise
Grade
C
Local Planning Authority
West Lothian
Constituency
Bathgate and Linlithgow MP: Kirsteen Sullivan (Lab)
Country
Scotland
Date first listed
25 June 1980
OS grid reference
NT 093 741
Coordinates
55.95146, -3.4527
Source
Historic Environment Scotland listing

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

Description

Bridge No. 30, located near Broomhouse on the Union Canal, was built around 1820 under the direction of engineer Hugh Baird. The bridge features a segmental arch constructed of coursed stone. It has slab copings and numbers are incorporated into the keystones. The Union Canal itself is designated as a Scheduled Ancient Monument (SAM No. 4170), having been scheduled on 15 December 2003.

Local climate

Bridge No. 30, Niddry, Union Canal receives an average of 950 mm of rain a year. This makes it wetter than 73% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 55% of listed buildings.

It experiences an average of 42 freeze-thaw cycles a year, more than 80% of listed buildings. Of these, 22 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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  • No EPC on record for this property
  • No sale records on file
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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. Niddry Castle Grade A 297 m
  2. Bridge No. 31, Winchburgh, Union Canal Grade C 679 m
  3. Winchburgh Primary School, Main Street, Winchburgh Grade C 950 m
  4. Bridge No. 29, Broxburn, Union Canal Grade C 1.0 km
  5. Bridge No. 32, Winchburgh, Union Canal Grade C 1.2 km
  6. Broxburn, Bridge No. 28, Union Canal Grade C 1.4 km
  7. Bastion And Retaining Walls, Newliston House Grade B 1.6 km
  8. Garden House, Newliston House Grade C 1.6 km
  9. Bridge No. 33, Myre, Union Canal Grade C 1.7 km
  10. Walled Garden, Newliston House Grade B 1.7 km