Digswell Viaduct build a bypass tunnel?

[HST43257]

Anyway, with HS2 is there going to be need for Welwyn to be fixed?

No, and there’s not a desperate need for it to be fixed without HS2 either.

Pre HS2: Welwyn closure could be needed or Hertford Loop upgrade
Post HS2: Nothing needed but if needed then Welwyn closure

 

[HST43257]

This may be a bit over the top, but could it be that Welwyn North had JUST the peak Baldocks with the Cambridge slows not stopping between Welwyn GC and Knebworth?

 

[L Brightwell]

The two-track section between Digswell and Woolmer Green junctions has been an issue for years. It's quite easy to say that it's the busiest twin-track section in the country. Owing to the fact the coronavirus pandemic cut down services at quite significant levels, it's not as much of a huge problem as it was before, though that doesn't mean they should leave it. In reality, it's something that would cost billions and very expensive options to solve. Other projects are being delivered by Network Rail as part of the East Coast Upgrade currently. The dive-under at Werrington is coming on very well. Due to the high expenses and complexities of solving Welwyn North, I doubt it will be any time soon that we will see Network Rail with spades in the ground and preparing to deliver any upgrades.

 

[Bald Rick]

It's quite easy to say that it's the busiest twin-track section in the country

It’s quite easy to day, but also wrong! Lots of other twin track sections of railway in the country carry more services.

 

[HST43257]

It’s quite easy to day, but also wrong! Lots of other twin track sections of railway in the country carry more services.

Perhaps the addition of mixed traffic/speed may help