bridges

Golden gate bridge-
length :1.7 miles or 8,981 feet
material: steel
crosses:golden gate
Opened: May 27 1937





Sydney Harbor bridge-
Total length :1,149 m (3,770 ft)

material :?

Crosses: Port Jackson
Opened: 19 march 1932

Danyang–Kunshan Grand Bridge- 

164.8 kilometers or 102.4 miles 

Material: ?

Opened June 30, 2011

Carries: Rail