A busy road bridge on Teesside has been demolished and replaced while drivers continued to use it.
The A66 Surtees Bridge over the River Tees, used by 55,000 vehicles daily, is being widened to three carriageways.
Since work began in March 2006 the original structure has been demolished and a new one built alongside by an army of workmen, including divers.
Motorists faced lane closures and speed restrictions, with full closures only taking place overnight.
The work, which will accommodate slip roads to and from the new South Stockton Link Road, is expected to be fully complete by autumn.
Arun Sahni, Highways Agency project manager, said: "Previously when bridges were replaced the routes they covered would be out of action for the duration of the works but this revolutionary and innovative design has meant that delays have been only minimal.
"People think they've been driving on the same bridge all this time but in fact it is now a completely new structure."