Engineer's Line References (ELRs)

Mileages

Last update 12 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.

SWJ South Wales Mineral Junction Branch

   0.00	Tanygroes West Junction with AVN (0.11)
   0.49	Margam Forge siding
   1.75	Maesmelyn colliery
   2.01	CWMAVON
   2.25	Ynisdavid viaduct
   3.08	Oakwood Junction with RSB (10.52)
   3.30	start of Pontrhydyfen viaduct
   3.37	end of Pontrhydyfen viaduct
   3.68	Penstar colliery
   4.56	EFAIL FACH
   5.07	Blaenavon Junction with BNZ (0.00)
   5.49	TONMAWR JUNCTION
   5.55	Tonmawr West Junction with SMI (5.31)