Third Mainland Bridge

The Third Mainland Bridge connects Lagos Island to the Mainland. It was opened in 1990, constructed by the firm Julius Berger. It remained Africa's longest bridge until 1996. The bridge spans 7.3 miles. It is also known as the Ibrahim Babangida Bridge. 

1. https://en.wikipedia.org/wiki/Third_Mainland_Bridge

2. https://www.ice.org.uk/what-is-civil-engineering/infrastructure-projects/third-mainland-bridge-lagos