Engineer's Line References (ELRs)

Mileages

Last update 1 June 2026

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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.

HLL Heathrow Link Line

HLL Network Rail portion

  11.04	Heathrow Airport Junction with MLN1
  11.15	Heathrow Airport Junction with MLN1 later position of down main line junction
  11.47	start of Stockley East Flyover viaduct
  11.55	end of Stockley East Flyover viaduct and start of Stockley North viaduct
  11.60	start of Sams viaduct
  11.74	end of Sams viaduct
  11.79	end of Stockley North viaduct
  12.00	intersection bridge over MLN1
  12.25	HEATHROW INTERCHANGE also called H. JUNCTION
  12.30	Heathrow tunnel portal end-on junction with HLL1 and ownership boundary (NR/BAA)

Note that this was part of the original HLL