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Bridges, tunnels, road barriers - height restrictions

Publisher
Greater London Authority
Updated
25 September 2026
Topic
Not set
Licence
Not set

Summary

This data set covers 877 structures within the Greater London boundary / M25 comprising of low bridges, tunnels and road barriers in a .csv file which will be updated annually.

It is available in our Roads data bucket under the folder /Bridges - restrictions.

The data contains the following variables:

Variable Description / value

Height restriction(m)

• Up to 3.0
• Between 3.1 and 3.5
• Between 3.6 and 4.0
• Between 4.1 and 4.5
• Between 4.6 and 5.1

Height restriction (imperial)

• Up to 9'10"
• Between 9'10" and 11'6"
• Between 11'9" and 13'0"
• Between 13'3" and 14'9"
• Between 15'0" and 16'6"

Easting

X-coordinate

Northing

y-coordinate

Grid Reference

Grid reference value

Lat

Latitude value

Lng

Longitude value

Borough

Borough name

Road name

Road name

Road number

Road Number

TLRN [Red route]?

• Yes = restriction is located on TLRN
• No = sign is NOT located on TLRN
(TLRN = Transport for London Road Network Area = Red Route, road network controlled by TfL)

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Source Metadata
XML, HTML
Harvest GUID
epowr

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