Hitchin Flyover

Discussion in 'Infrastructure & Stations' started by swt_passenger, 30 Mar 2011.

Thread Status:
Not open for further replies.
  1. swt_passenger

    swt_passenger Veteran Member

    Messages:
    20,872
    Joined:
    7 Apr 2010
  2. Registered users do not see these banners - join or log in today!

    Rail Forums

     
  3. shinkansen1966

    shinkansen1966 Established Member

    Messages:
    1,134
    Joined:
    2 Jun 2009
    Location:
    North London
    So the Hitchin Flyover will be ready in early 2014. Great stuff and not a moment too soon.

    Wonder if FCC or successor franchise will use this opportunity to rewrite the timetable for this route or add more service as the press release indicates.

    Welywn bottleneck to sort out next. One cheaper solution is to reposition Welywn North station on the south side of Digwell/Welywn viaduct just before four track merges into two track for the crossing.
     
  4. cle

    cle Established Member

    Messages:
    1,868
    Joined:
    17 Nov 2010
    I understand this is great for resilience, less pathing delays etc... but will this actually lead to any increases in service, or decreased in journey times? Especially with Welwyn a few miles south!
     
  5. shinkansen1966

    shinkansen1966 Established Member

    Messages:
    1,134
    Joined:
    2 Jun 2009
    Location:
    North London
    My guess is improved reliability. Nothing more. Mind you, that would be a welcome improvement.

    Plus the novelty of travelling at speed off the ECML, over the viaduct and onto Cambridge line instead of the crawl through Hitchin. Or just as likely wait for an EC train to pass.
     
  6. swt_passenger

    swt_passenger Veteran Member

    Messages:
    20,872
    Joined:
    7 Apr 2010
    It will be Thameslink and also IEP to Kings Lynn that will really make changes to the service pattern possible.

    I expect that although the flyover provides the actual reliability improvements necessary to run with closer headways (as there'll be no up/down crossing conflicts) - without the additional rolling stock provided by the other projects not much can happen?
     
  7. Aictos

    Aictos On Moderation

    Messages:
    8,460
    Joined:
    28 Apr 2009
    It would just mean a increase in service capacity, will be worth it's weight in gold in maintaining a service when for example there's any problems preventing services to use the Cambridge Junction pointwork to access the Cambridge branchline.
     
  8. philjo

    philjo Established Member

    Messages:
    2,511
    Joined:
    9 Jun 2009
    It will allow the evening peak Hertford services to go through to Letchworth & turnback from the sidings there (they do this off-peak at the moment anyway). This would ease congestion from platform 4 at Stevenage. The Cambridge stoppers in evening peak are currently timetabled to wait outside Stevenage for 2-3 minutes as they are waiting for the Hertford service in platform 4 to leave again towards hertford before the line is clear. The Cambridge service waits again 2-3 minutes at Hitchin for various EC services to go through - on some days the wait is up to 6-7 minutes. so a 20 minute WGC-Letchworth journey off-peak takes about 30 minutes in the evening peak.

    It means they can fine tune the timetable around Welwyn without having to factor in conflicts at Hitchin as well. Though the linespeed for the slow lines Woolmer Green-Hitchin needs increasing so the Cambridge fasts can use this without a time penalty.
     
  9. LE Greys

    LE Greys Established Member

    Messages:
    5,389
    Joined:
    6 Mar 2010
    Location:
    Hitchin
    :idea: Oh, so that's it! I've often wondered what that wait was for.
     
  10. GingerSte

    GingerSte Member

    Messages:
    209
    Joined:
    26 May 2010
    This is good news. A few more like this and we'll be alright.

    Do we know who's designing/building it yet?
    (Declaring interest as bridge engineer.)
     
  11. Fred26

    Fred26 Member

    Messages:
    992
    Joined:
    5 Mar 2010

    Does Network Rail have plans for a flyover at Newark?
     
  12. philjo

    philjo Established Member

    Messages:
    2,511
    Joined:
    9 Jun 2009
    Whilst talking of this section of line, NHDC have issued planning notices saying a planning application has been received for extending the platforms at Letchworth.

    http://www.north-herts.gov.uk/dcdataonline/Pages/AcolNetCGI.gov?ACTION=UNWRAP&RIPNAME=Root.PgeResultDetail&TheSystemkey=151975


    Regarding the flyover construction, I assume the the section over the ECML will be installed either during Christmas 2012 or 2013 when the railway is closed? Otherwise, there could be a couple of weekend diversions via Cambridge!
     
  13. DaveNewcastle

    DaveNewcastle Established Member Fares Advisor

    Messages:
    7,397
    Joined:
    21 Dec 2007
    Location:
    Newcastle (unless I'm out)
    Maybe. But I assume that you weren't watching the development of the new motorway (linking the M8 and M74) over the WCML and all suburan lines radiating from Glasgow Central last February, then?
    If you google for it, you might even find time-lapse images of the bridge being progressively 'rolled-out' by a novel technique over the railway very slowly during night-times.
     
  14. OxtedL

    OxtedL Established Member Quizmaster

    Messages:
    2,344
    Joined:
    23 Mar 2011
  15. yorkie

    yorkie Administrator Staff Member Administrator

    Messages:
    44,326
    Joined:
    6 Jun 2005
    Location:
    Yorkshire
    But they don't need to; the turnout from the Down Fast to Down Slow just south of (ie, before) Hitchin is 70mph, isn't it? So they can do 100mph all the way to just before Hitchin anyway.
     
  16. philjo

    philjo Established Member

    Messages:
    2,511
    Joined:
    9 Jun 2009
    True, but the southbound services (which won't be affected by the flyover as they will obviously use the existing route) often use the slow lines from Hitchin to Woolmer Green as an EC service tends to pass them in the Stevenage area. The slow line south from Hitchin I think is 75mph. Hitchin to Letchworth section on the branch is 90mph.
     
  17. FLHH East Anglia

    FLHH East Anglia Member

    Messages:
    108
    Joined:
    13 Feb 2009
    i think that the speeds will go up for MU's on the slows in the not too distant future.
     
Thread Status:
Not open for further replies.

Share This Page