Middlesbrough transporter bridge opened on 17th October 1911 improving access to the north bank of the Tees and superseding the ferry service, which was previously the only means of crossing the river between Thornaby on Tees and the sea. It is the longest transporter bridge in the world with the total length of 259 metres/851 feet it has a maximum height from high water of 69 metres/255 feet making it Middlesbrough’s most visible landmark. Photograph and imformation courtesy of George Guirguis 
Picture Stockton Archive
A Pictorial History of Stockton-on-Tees
My great grandmother used to cross the Tees every day on the transporter bridge to take her youngest son to a hospital. He had feet which turned inwards and wore some sort of leg irons to try to correct this, and they had to be adjusted daily. He was born in 1917 at Haverton Hill. His mother, my grandmother, died in 1919 aged 39 of exhaustion.
I think the transporter bridge is a piece of art.