Comments on: Electrification Progress

By: Joshua

Joshua — Mon, 09 Nov 2009 07:15:51 +0000

The mangere bridge definately has been designed to carry rail across it. Their has also be careful allocation of a rail corrador throughout the projects length. I however don’t know if they have catered for just one or two lines.

By: admin

admin — Mon, 09 Nov 2009 06:43:29 +0000

I suppose that’s possible. However, I think that there would be a great unwillingness to actually build a section of single-track (beyond a stub like Onehunga) when we have spent hundreds of millions double-tracking the Western Line.

By: Jeremy Harris

Jeremy Harris — Mon, 09 Nov 2009 06:24:29 +0000

You couldn’t have double track through Onehunga and to the Airport, i.e. only section of single track was over the bridge..?

Does anyone know the definitive answer..?

By: admin

admin — Mon, 09 Nov 2009 06:15:29 +0000

Yes it would absolutely have to be double-track. There’s no point spending hundreds of millions on building the line unless you’re going to run trains at 15 minute frequencies along it. And those frequencies mean that double-tracking is definitely necessary.

By: Nick R

Nick R — Mon, 09 Nov 2009 06:08:49 +0000

Sweet Jesus it would have to double track, right?!

By: Jeremy Harris

Jeremy Harris — Mon, 09 Nov 2009 05:48:28 +0000

I think I’ve asked this before, as a single or double track..?

By: admin

admin — Mon, 09 Nov 2009 05:09:22 +0000

Yeah the Campaign for Better Transport took NZTA to the environment court to ensure that the design of the Mangere Bridge was done in a way that made it easy for rail to be put across there in the future.

By: Nick R

Nick R — Mon, 09 Nov 2009 04:54:26 +0000

Bob, I’m almost 100% certain the design of the new Mangere Bridge was eventually amended to allow for a low level rail deck to be tacked on to one side of the foundations, so all is not lost!

By: Jeremy Harris

Jeremy Harris — Mon, 09 Nov 2009 04:53:05 +0000

The RLTS has an Airport Rail designation as a priority, hopefully this gets done… Whew another thing to campaign for…

@Bob, the Mt Roskill SH20 motorway overbridges have TWO supports underneath them with one inbetween the westbound and eastbound lanes with room for lane expansion, the second support will be between the eastbound lane and the SAL (except as it passes through the Keith Hay Park area, not sure what’ll happen here as she’s pretty narrow)…

By: Joshua

Joshua — Mon, 09 Nov 2009 03:55:17 +0000

Bob, Hastie Ave footbridge had to be extended because of the motorway length, however they didn’t extend it past where the rail line would be extended as this part would be rebuilt to include a station, so even if it was built with the extra width it would be torn down again, interesting to note that the whole bridge wouldn’t be needed to be torn down but just the ramp it’self, which would most likely be replaced with a lift and stairs instead.