Uttarakhand, India bridge collapse

[Eufalconimorph]

Article.

Since the news article blocks ad blockers (aka the most effective anti-malware solution for the web) for its video and I'm too lazy to make a rule to override that now, here's the Reddit copy.

 

[3DDave]

Interesting. I pointed out that separate trusses on either side of a bridge isn't a guarantee of redundancy and that one side failing would trigger a failure on the other side? Glad to read the pedestrian following the truck was uninjured; no one seems to know about the driver, but at least it did not look as if the cab was damaged.

_missed the sub headline- Two persons on the truck, including driver, sustained serious injuries.

That's a shame.

 

[JohnRBaker]

That was a Bailey Bridge, probably surplus from WWII. The last Bailey Bridge I saw was in Niderviller, Lorraine, France, over a barge canal:

September 2004 (Minolta DiMAGE 7Hi)

John R. Baker, P.E. (ret)
EX-Product 'Evangelist'
Irvine, CA
Siemens PLM:
UG/NX Museum:

The secret of life is not finding someone to live with
It's finding someone you can't live without

 

[EdStainless]

Too bad they didn't unload the excavator and drive it across separately.
Though having worked in India if you aren't overloaded by a factor of 3 or 4 you aren't trying.

= = = = = = = = = = = = = = = = = = = =
P.E. Metallurgy, consulting work welcomed

 

[LittleInch]

I reckon that bridge is about 110 ft across - each span is 10ft.

As afar as I can see a double single truss is rated at 20 tonnes normal, 30 tonnes caution and 34 tonnes Risk.

A hyundai 215 excavator is 21 tonnes
The truck ?? 10 tonnes? 15 at the most.

So yes over loaded but not by much.

Those bridges though are phenomenal.

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

 

[Eufalconimorph]

Close or over load capacity, if the bridge was new. While they do still get used as temporary construction (they're fast to put up, making them pretty decent for emergency replacement of damaged bridges) there are surely a lot of them left around from WWII era. Depending on how old it was that could have been a large contributing factor to the collapse.

 

[JStephen]

Makes me wonder if the person shooting the video didn't anticipate that possibility.
Presumably, the guy walking behind the truck did not, or he would have walked a little further back.
There are two or three YouTube videos with the same clip.