Train Graphic
Great Western Passengers' Forum Great Western Coffee Shop - [home] and [about]
Read about the forum [here].
Register and contribute [here] - it's free.
article index - [here]
 tomorrow - MRUG meeting
tomorrow - ACoRP board nominations close
18/10/2019 - TravelWatch SouthWest
18/10/2019 - GWR meet the team - Westbury
19/10/2019 - MRUG/CS "Thank you" BBQ
21/10/2019 - Ticket booking test - BRI
Random Image
Train Running @GWR Twitter Acronyms/Abbreviations Station Comparator Rail news GWR co. site Site Style 1 2 3 4 Chat on off
Next departures • Bristol Temple MeadsBath SpaChippenhamSwindonDidcot ParkwayReadingLondon PaddingtonMelksham
Exeter St DavidsTauntonWestburyTrowbridgeBristol ParkwayCardiff CentralOxfordCheltenham SpaBirmingham New Street
October 15, 2019, 02:20:28 am *
Welcome, Guest. Please login or register.

Login with username, password and session length
Forgotten your username or password? - get a reminder
Most liked recent subjects
[94] London Overground - proposed ticket office reduction of hours
[84] Restoration of original prototype HST to service
[56] Climate Change Emergency - Implications for UK Transport Strat...
[52] IETs into passenger service from 16 Oct 2017 and subsequent pe...
[47] Collapse of Thomas Cook
[44] On crossing borders by public transport - to and within the UK...
News: A forum for passengers ... with input from rail professionals welcomed too
 
   Home   Help Search Calendar Login Register  
Pages: [1]
  Print  
Author Topic: Deja Vu Bristol Parkway Hatchet Road Bridge  (Read 1432 times)
johnneyw
Transport Scholar
Hero Member
******
Posts: 1123


Still want to work on the railways when I grow up.


View Profile
« on: September 10, 2019, 06:10:10 pm »

Local BBC radio is reporting a road closure or delays after another bus seems to have hit the bridge at Bristol Parkway. How long was it since the previous one? This year?
Logged

Railway rock n' roll rebel. I once bought a return ticket and didn't go back!
martyjon
Transport Scholar
Hero Member
******
Posts: 1805


View Profile
« Reply #1 on: September 10, 2019, 06:41:16 pm »

Local BBC radio is reporting a road closure or delays after another bus seems to have hit the bridge at Bristol Parkway. How long was it since the previous one? This year?

Yea, First Bus service 19A Cribbs Causeway to Bath has hit same arch as Applegates DD earlier this year. Bridge should be replaced but you know LA's, won't do anything until fatalities occur and there's no guarantee they will in those eventualities although Network Rail has a part to play in this particular case. Knowing the location well and to my non-professional eye an easy solution, lower the road surface by one foot, a job that could be done in a long weekend with 24 hour working but knowing how LA's work, start - stop working taking 12 months.
Logged
eightonedee
Transport Scholar
Hero Member
******
Posts: 460



View Profile
« Reply #2 on: September 10, 2019, 09:48:49 pm »

...or longer if the Cow Lane Bridge saga in Reading is anything to go by!
Logged
froome
Transport Scholar
Hero Member
******
Posts: 411


View Profile Email
« Reply #3 on: September 11, 2019, 08:03:42 am »

Local BBC radio is reporting a road closure or delays after another bus seems to have hit the bridge at Bristol Parkway. How long was it since the previous one? This year?

Yea, First Bus service 19A Cribbs Causeway to Bath has hit same arch as Applegates DD earlier this year. Bridge should be replaced but you know LA's, won't do anything until fatalities occur and there's no guarantee they will in those eventualities although Network Rail has a part to play in this particular case. Knowing the location well and to my non-professional eye an easy solution, lower the road surface by one foot, a job that could be done in a long weekend with 24 hour working but knowing how LA's work, start - stop working taking 12 months.

I doubt whether a long weekend is anywhere near realistic for that sort of job. There will be numerous public utilities that need to be moved, some over long distances, which would need to be done separately. There will also be the issue of drainage from the site. A lower road surface may create a low spot which require extensive drainage works to alleviate it.

As a teenager I lived on a main road which was later lowered under a railway bridge, probably for similar reasons as this. At the next heavy rainfall the whole road flooded to a depth which meant it was then closed to use for some time.
Logged
Red Squirrel
Global Moderator
Hero Member
*****
Posts: 3186


There are some who call me... Tim


View Profile
« Reply #4 on: September 11, 2019, 09:41:56 am »

This bridge is deceptive because it has two elements - a plate girder bridge over which three track pass, and a stone arch which, as far as I can tell, is redundant. The stone arch requires tall vehicles to pass in the middle of the road, whereas the plate girder bridge allows full headroom across its entire width. For vehicles passing under from the north, it is hard to see the arch in the gloom.

Is there an argument for demolishing the arched bridge? That probably could be done in a weekend!
Logged
Phantom
Sr. Member
****
Posts: 283



View Profile Email
« Reply #5 on: September 11, 2019, 09:56:17 am »

https://www.bristolpost.co.uk/news/bristol-news/live-first-bus-crash-parkway-3305004
Logged
Witham Bobby
Sr. Member
****
Posts: 126



View Profile
« Reply #6 on: September 11, 2019, 10:05:01 am »

Very fertile railway gardens in the vicinity of the bridge.

The overhanging branches must affect visibility through the bridge, I'd suggest

All part of the way the railways are looked after these days.
Logged
johnneyw
Transport Scholar
Hero Member
******
Posts: 1123


Still want to work on the railways when I grow up.


View Profile
« Reply #7 on: September 11, 2019, 10:52:31 am »

This bridge is deceptive because it has two elements - a plate girder bridge over which three track pass, and a stone arch which, as far as I can tell, is redundant. The stone arch requires tall vehicles to pass in the middle of the road, whereas the plate girder bridge allows full headroom across its entire width. For vehicles passing under from the north, it is hard to see the arch in the gloom.

Is there an argument for demolishing the arched bridge? That probably could be done in a weekend!

There's the opportunity cost to consider. Is it possible, likely even, that an extra track will need to be laid there some time in the reasonably near future to deal with an increase in traffic?
Logged

Railway rock n' roll rebel. I once bought a return ticket and didn't go back!
Bmblbzzz
Transport Scholar
Hero Member
******
Posts: 2255


View Profile
« Reply #8 on: September 11, 2019, 11:37:52 am »

It might be simpler/cheaper/quicker to install a 'false arch' to the girder bridge. This would at least make it clear to drivers of high vehicles that they need to avoid the left-hand side (looking from the north) of the road.
Logged

Day return to Infinity, please.
stuving
Transport Scholar
Hero Member
******
Posts: 4167


View Profile
« Reply #9 on: September 11, 2019, 11:48:30 am »

It might be simpler/cheaper/quicker to install a 'false arch' to the girder bridge. This would at least make it clear to drivers of high vehicles that they need to avoid the left-hand side (looking from the north) of the road.

The previous time this happened - dealt with here in the forum - the driver correctly pulled out before going under the northern (steel) bridge, but pulled back into the left before reaching the southern (arch) bridge (there's a video). That was partly because northbound cars had stopped under the bridge, and mostly a failure to think about why the signs said to pull out when the first brige wasn't arched.

Oh, and there is no need to wait for a track to be laid on that southern bridge - it's already there; the extra track that allows trains to sneak in and out of P4 without special permission.
Logged
Red Squirrel
Global Moderator
Hero Member
*****
Posts: 3186


There are some who call me... Tim


View Profile
« Reply #10 on: September 11, 2019, 12:19:31 pm »

Oh, and there is no need to wait for a track to be laid on that southern bridge - it's already there; the extra track that allows trains to sneak in and out of P4 without special permission.

Ah, that's the trouble with doing a desk-based analysis; the satellite views I checked must be out-of-date..!
Logged
Do you have something you would like to add to this thread, or would you like to raise a new question at the Coffee Shop? Please [register] (it is free) if you have not done so before, or login (at the top of this page) if you already have an account - we would love to read what you have to say!

You can find out more about how this forum works [here] - that will link you to a copy of the forum agreement that you can read before you join, and tell you very much more about how we operate. We are an independent forum, provided and run by customers of Great Western Railway, for customers of Great Western Railway and we welcome railway professionals as members too, in either a personal or official capacity. Views expressed in posts are not necessarily the views of the operators of the forum.

As well as posting messages onto existing threads, and starting new subjects, members can communicate with each other through personal messages if they wish. And once members have made a certain number of posts, they will automatically be admitted to the "frequent posters club", where subjects not-for-public-domain are discussed; anything from the occasional rant to meetups we may be having ...

 
Pages: [1]
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.2 | SMF © 2006-2007, Simple Machines LLC Valid XHTML 1.0! Valid CSS!
This forum is provided by a customer of Great Western Railway (formerly First Great Western), and the views expressed are those of the individual posters concerned. Visit www.gwr.com for the official Great Western Railway website. Please contact the administrators of this site if you feel that the content provided by one of our posters contravenes our posting rules (email link). Forum hosted by Well House Consultants

Jump to top of pageJump to Forum Home Page