Cranes are on Shaky Ground and Collapsing Daily.

A 720-tonne gantry crane tipped off its rails on Friday, dropping a section of the new Port Mann bridge into the Fraser River, just east of Vancouver.

Crane drops section of Port Mann bridge into B.C. river

90-tonne segment of bridge plunges into Fraser River
CBC News
Posted: Feb 10, 2012 9:33 AM PT

Last Updated: Feb 10, 2012 3:30 PM PT

 

 A 720-tonne gantry crane tipped off its rails on Friday, dropping a section of the new Port Mann bridge into the Fraser River, just east of Vancouver. (Steve Lus/CBC)

A crane tipped off its tracks on the Port Mann bridge construction project east of Vancouver on Friday morning and dropped a segment of the bridge into the Fraser River.

Bridge project spokesman Max Logan said the gantry crane, which is designed to move on rails, is secure and nobody was hurt, but a 90-tonne section of the bridge deck the crane was moving fell into the Fraser River.

The segment struck a pile as it fell and is now submerged in the river. It is unclear whether the segment can be recovered.

The bridge segments are brought in by barge and lifted into place by the special 720-tonne horizontal gantry crane, which is also called a segment launcher.

Logan said one of the supports for the gantry appears to have been crushed and the gantry pitched forward.

It is unclear how long the mishap will delay the project, but the contractor Kiewit is responsible for any costs that result.

The Trans-Canada Highway remains open on the old Port Mann Bridge and there are no reports of any injuries.

When completed, the $800-million bridge will provide 10-lane crossing of the Fraser River for the Trans-Canada Highway east of Vancouver. It is scheduled to be completed in 2013.

Crane falls at Mich. construction site; 3 hurt

A 250-foot-tall crane collapsed Friday morning onto a building at a construction site at the Kent County jail complex in Grand Rapids, injuring three people, authorities said.

The jail was placed on lockdown following the incident. Kent County Undersheriff Jon Hess described the injuries to a construction worker and two Kent County jail trustees as minor, The Grand Rapids Press (http://bit.ly/ziaMEe) reported.

Both the department construction company officials said all inmates and workers were accounted for.

Construction company Owen-Ames-Kimball Co. said Friday in a statement it was investigating the cause of the accident and had no further information. Hess said it appears that a cable snapped as the crane was carrying cement.

Images from the scene showed part of the crane leaning against a building. A garage area where sheriff's vehicles are kept was damaged.

The main jail that houses inmates apparently wasn't damaged, and Hess said authorities were checking the structural integrity of that building.

The crane that fell has been used for seven months on a $27 million renovation project, Hess said.

http://www.chicagotribune.com/news/chi-ap-mi-constructionaccid,0,32...

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Comment by Starr DiGiacomo on February 29, 2012 at 5:03pm

http://news.asiaone.com/News/Latest%2BNews/Singapore/Story/A1Story2...

1 dead, 2 injured as crane collapses in construction site

One man was pronounced dead and two others injured as a crane collapsed at a construction site along Fort Road at 4pm on Wednesday.

The Singapore Civil Defence Force were called to the scene, where officers found that the crane, about 21 metres in height, had fallen onto a nearby seven-storey uncompleted building.

Paramedics were on the rooftop to assess the men's injuries. The two injured men suffered a suspected spinal injury and a fractured right thigh respectively. They were then evacuated using an on-site crane and crane bucket and sent to Tan Tock Seng Hospital.

The third man who was found trapped under the boom of the crane died at the scene.

Comment by Nancy Lieder on February 11, 2012 at 11:15am

I note no cause is given for EITHER of these crane collapses. The wobble definitely affects cranes, which are flung to the side just enough to drop.

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