
Bridges, tunnels, road barriers - height restrictions
Transport for London
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) | |
| Comments | Additional information |

