Engineer's Line References (ELRs)

Mileages

Last update 13 June 2026

Additional information is always gratefully received, whether entirely new records (particularly historical records) or information to fill in gaps or correct errors, via the contact link under the Miscellaneous entry in the navigation bar above. Thank you.

Mileages are given in the form miles.chains unless stated otherwise. Figures prefixed with ≈ are approximate, those in parentheses are not on this route but are given for reference. Reference to 'start'/'end' of an asset are as read down the page.

TRL St Pancras to Cheriton (Channel Tunnel Rail Link)

TRL3 Dagenham Junction to Eurotunnel boundary

 21.264km	junction with TRL2
 21.699km	Dagenham Junction with TRL4 (up line)
 23.541km	start of Rainham viaduct
 24.070km	end of Rainham viaduct
 27.215km	start of Aveley viaduct
 27.894km	end of Aveley viaduct
 30.549km	start of Thurrock viaduct
 31.596km	end of Thurrock viaduct
 35.555km	North Kent Line Connection Junction with TRL5
 35.953km	intersection bridge under HDR (21m 37ch)
 36.550km	EBBSFLEET INTERNATIONAL
 40.150km	Southfleet Junction with FJS (206.012km)
 40.944km	start of Wrotham Road viaduct
 41.027km	end of Wrotham Road viaduct
 42.690km	Singlewell Junction with SNG1 (0.000km)
 49.967km	start of Medway viaduct
 51.228km	end of Medway viaduct
 83.732km	start of Tutt Hill viaduct
 83.859km	end of Tutt Hill viaduct
 88.315km	Ashford West Junction (CTRL) with TRL6 (0.000km)
 90.391km	start of Ashford viaduct
 91.821km	end of Ashford viaduct
 90.977km	intersection bridge over ACR (56m 47ch)
 92.723km	Ashford East Junction (CTRL) with TRL7 (4.455km)
105.557km	Dollands Moor West Junction with TRL8 (0.000km) up line
105.674km	Dollands Moor West Junction with TRL8 (0.000km) down line
106.914km	start of Grange Alders viaduct
107.382km	intersection bridge over XTD (66m 56ch)
107.440km	end of Grange Alders viaduct
108.367km	start of M20/A20 viaduct up line
108.517km	start of M20/A20 viaduct down line
108.582km	convergence of TML (67m 32ch), Channel Tunnel datum (7.000km) and end of M20/A20 viaduct
109.952km	junction with FTC (8.380km)