Frenetic activity surrounds the Hamworthy site of Poole’s Twin Sails Bridge as a time-lapse video shows exactly how the iconic bridge was put together.

The resulting video can be seen on YouTube and the footage covers more than six months’ work in all weathers as the jigsaw of steel is put together.

Five spans across the Back Water Channel connecting Hamworthy and Poole town are gradually built out of 41 sections of steel, manufactured by Cleveland Bridge UK.

Constructors Hochtief commissioned Hallmark Productions to produce this unique time-lapse video.

Two special cameras, designed to work in all weathers, and to be ultra-reliable were positioned high on the site with clear views of the months of activity.

Images were captured at one-minute intervals from July 2011 and continue to date.

They were sent to Hallmark via a high tech 3G data connection and have been made into a fascinating film.

“The results are stunning, providing an amazing archive of footage for the town,” said Rod Hewitt of Hallmark.

“As well as showing the development of the new bridge, the footage gives a valuable insight into the changing weather patterns in the harbour,” he said.

Grainy black and white photographs and moving images of the official opening of Poole Bridge in 1927 are in existence and held by Poole Museum, and this shows just how far technology has advanced in the interim.

The video can be found under Poole Twin Sails Bridge 10th Feb 2012 or youtube.com/watch?v= fmLmY3BggfI.