Gemini bridge
The first cantilever bridge was invented by Heinrich Gerber in 1867. He also designed and constructed the Hassfurt Bridge over the main river in Germany
The Mullaperiyar Dam is constructed over the headwaters of the Periyar River in Kerala, India.
Nelson Mandela Bridge. The bridge was constructed over 42 railway lines to link two business areas, Braamfontein and Newtown, in Johannesburg, South Africa
Just over 4 years and 4 months.
pamban bridge in rameshwaram . it has one road line and one railway line
New York City Mayor Robert F. Wagner's car was the first over the bridge .
This question is difficult to answer as "suspension bridge" is a very loose term. Ancient people from South America and the Himalayas have used rope suspension bridges to span chasms since ancient times and there are arguments about who first designed/built the first modern bridges. For information relating to these arguments see the related link below.
over 200yrs old
The Bering Land Bridge was used by the first people who came to the Americas.
W. A. Provis has written: 'An historical and descriptive account of the suspension bridge constructed over the Menai Strait, in North Wales'
The Iron Bridge at Coalbrookdale The world's first cast iron bridge was built over the River Severn at Coalbrookdale in 1779
OG Loc