Engineer's Line References (ELRs)

Mileages

Last update 1 March 2021

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Mileages are given in the form miles.chains. 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.

HLL Heathrow Link Line

  11.04		Heathrow Airport Junction with MLN1
  11.15		Heathrow Airport Junction with MLN1 [later position of down main line junction]
  12.25		HEATHROW INTERCHANGE
  12.30/19.908km	Heathrow tunnel portal ownership boundary (NR/BAA) and measurement unit change

 19.908km/12.30	Heathrow tunnel portal
 23.550km/14.51	HEATHROW TERMINALS 2 AND 3
 23.667km/14.56	up line junction with Terminal 5 route
 24.301km/15.08	down line junction with Terminal 5 route
 26.520km/16.38	HEATHROW TERMINAL 4

Note that, apart from the temporary Heathrow Interchange station, all stations include the term (Rail Station Only) on the National Rail Enquiries system.  Heathrow Terminals 2 and 3 has been known by various names including use of Central and including terminal 1, sometimes together.

Note too that this route became HLL and HLL1 once the Terminal 5 branch opened