M60 J10-12 proposed changes

[darkcape]

The initial alert we received on site was that only one cable had failed, however obviously it is way more serious. Hopefully with the HSE involved there will be a thorough investigation, this could've easily resulted in many deaths.

[Pendlemac]

Picture

https://twitter.com/TheRealPDog/status/ ... wsrc%5Etfw


More on the MEN site

http://www.manchestereveningnews.co.uk/

Something about the supporting cables snapping, not giving me much confidence to cross when completed!

http://www.manchestereveningnews.co.uk/ ... t-11340525

Given how wrong the MEN are calling it a 'suspension' bridge you have nothing to worry about.

When in use by traffic the bridge deck is supported by the main structure and there is no load on the cables.

As the Ship Canal is in use the bridge deck had to be suspended during the construction phase as the equipment for raising and lowering it has not yet been commissioned.

It will be interesting to see if the extended period under a higher than normal load has caused problems with the cables. ( Normally 10 - 20 min, bridge deck only compared with several weeks with containers and other equipment on it )

Can anyone remember how they did the Centenary Bridge further up the canal, as that would have had the same need to stay open during construction.

[Bryn666]

I don't actually know but the two structures are broadly identical.

There were several containers stacked towards one end and as you say I wonder if a dead load calculation was done incorrectly.

It sounds like it was a sudden and catsastrophic failure rather than a gradual failure but if no one was on it at the time that can only be good fortune.

[Gav]

Looks like they had a really lucky escape.....

http://www.manchestereveningnews.co.uk/ ... s-11338294

Wonder if this will set it back considerably ?

[KeithW]

Bound to cause some delay I would have thought, if nothing else there will be a need to review the design and construction techniques to find out how and why the collapse happened. The HSE will need to be reassured that everything has been assessed and a hold on further work will probably be issued until the investigation is complete.

[wrinkly]

Under discussion (well not much actually) here.

[wrinkly]

Video of the collapse caught on a dashcam:

https://www.facebook.com/ian.longden1/v ... 423870911/

[brummie_rob]

Video of the collapse caught on a dashcam:

https://www.facebook.com/ian.longden1/v ... 423870911/

That could have been so much worse if people were caught up in it...shocking!

[Big L]

The Facebook link seems dead, but it's on YouTube.


Link

[Haydn1971]

Stunning video, I can't see the deck being reused and some major repairs will be needed to the towers... Huge claim

[Bryn666]

Yes, the whole thing looks to be a write-off...

[wrinkly]

I was in the area yesterday so I took a look at the state of the collapsed bridge.

The deck had somehow been moved horizontally northwards between the north pair of towers to clear the canal.

I hadn't seen any reference to the move on here, or on the Greater Manchester Transport subforum of Skyscrapercity, but I've now looked on the Port Salford thread, which is on a part of Skyscrapercity I don't regularly read. There's some relevant discussion and pictures on this page.

A ship, the Arklow Vale, has been trapped at Salford, and the website marinetraffic.com is still showing it there, so perhaps the canal is not yet fully clear.

[wrinkly]

More pictures have since been added to the page linked above.

[wrinkly]

The ship that was upstream of the bridge site is still there. The canal is evidently still being treated as blocked. It's reported on Skyscrapercity that a forklift fell into the canal and is lost in the silt at the bottom. Divers have tried to find it but have so far failed.

[wrinkly]

The Ship Canal is now unblocked at the lift bridge site. The trapped Arklow Vale is gone.

[wrinkly]

The towers of the lift bridge have reportedly been stripped of equipment in preparation for demolition.

[Jeni]

Wow, didn't realise that they were leveling it and starting again. I'm guessing there was no hope of a repair.

[Bryn666]

I wouldn't want to be the project manager, that's for sure.

Career ending?

[wrinkly]

The towers of the lift bridge have reportedly been stripped of equipment in preparation for demolition.

This information came from people posting on Skyscrapercity. On the other hand, user "isambard" has posted this cutting there:

http://www.skyscrapercity.com/showpost. ... count=1149

[wrinkly]

All four towers still at full height. I've no idea what if anything is going on. Maybe they can't be touched until all investigations are complete.