Around 3,000 workers have helped construct the bridge using 2,300 feet long steel cables held aloft by a 'high line' crane system.

The writer think out that the completely new way to settling the gnaw rail problem is correcting the deflexion of crane frame to the rails and keep the cartwheel runes along the rail central line .

In automatic production in an immersion production line, the automatic stable running of bridge crane is critical.