Engineer's Line References (ELRs)

Mileages

Last update 11 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.

SDI Swansea District Line

SDI1 Briton Ferry Up Flying Loop Junction

 206.14	Briton Ferry Up Flying Loop Junction with SWM2 up line only
 206.52	down line junction with SWM2
 206.66	intersection bridge under SWM2 (206.65)
 207.17	Neath Canalside Junction with NEB (18.43)
 207.36	New Cut viaduct
 207.61	start of River Neath Swing Bridge viaduct
 207.67	Dyvenor Junction with RSB (19.16) and end of River Neath Swing Bridge viaduct
 208.33	Jersey Marine North Junction with JER (1.24)
 208.39	LLANDARCY
 208.49	end on junction with SDI2 (0.00)

Note that 206.14-207.67 was formerly part of RSB and 207.67-208.33 was formerly NEL