Pipe over ECML south of Potters Bar station

[kesterlester]

This is my first posting here -- so apologies for any possible misjudgements.

I would like to know more about the large pipe which crosses the East Coast Main Line on a gantry about 1800m south of Potters Bar station and 200m north of the north-entrance to the tunnel which is to the south of Potters Bar. I saw it from the train today. I imagine it is not a part of the rail infrastructure itself. More likely it is a local gas main or water pipe (perhaps the former more likely than the latter given its diameter). However, this forum seemed to be a good place to start.

Do you know what substance it conveys?

 

[stuving]

It's an aqueduct, carrying a little stream (mostly in culvert) called the Potters Bar Brook. This map on NLS is from 1936, since which even more of it has been culverted and some bits moved about to avoid new houses. On Google Earth you can see one bit of new route just to the east of the aqueduct as a light strip on the grass. The brook actually crosses the railway first above the tunnel, and goes on to meander through the houses and across the fields at Warrengate Farm where it joins Mimmshall Brook.

Oh, and 1800m is a bit out - it's about half that.

 

[Magdalia]

about 1800m south of Potters Bar station and 200m north of the north-entrance to the tunnel

Oh, and 1800m is a bit out - it's about half that.

The distance from the north portals of the tunnels to the station is almost exactly ¾ mile (c1200m). MP12 is adjacent to the north portal of the down tunnel, MP12¾ is opposite platform 4 near the top of the ramp, though difficult to see from trains passing on the fast lines.

 

[kesterlester]

Thank you, both, for the replies. Both are very useful.

It's an aqueduct, carrying a little stream (mostly in culvert) called the Potters Bar Brook. This map on NLS is from 1936, since which even more of it has been culverted and some bits moved about to avoid new houses. On Google Earth you can see one bit of new route just to the east of the aqueduct as a light strip on the grass. The brook actually crosses the railway first above the tunnel, and goes on to meander through the houses and across the fields at Warrengate Farm where it joins Mimmshall Brook.

Oh, and 1800m is a bit out - it's about half that.

Thank you. That's very helpul. Apologies for being a bit out on the distance estimates.