Third Mainland Bridge Third Mainland Bridge Third Mainland Bridge is the longest of three bridges connecting Lagos Island to the mainland, the other are the Eko and Carter bridges. It was the longest bridge in Africa until 1996 when the 6th October Bridge located in Cairo was completed. The bridge starts from Oworonshoki which is linked to the Apapa-Oshodi express way and Lagos-Ibadan express way, and ends at the Adeniji Adele Interchange on Lagos Island. There is also a link midway through the bridge that leads to Herbert Macaulay Way, Yaba. The bridge was built by Julius Berger Nigeria PLC and opened by
Lagos Consul and was located at Wydah. At the time of Beecroft's appointment, the Kingdom of Lagos (under Oba Kosoko) was in the western part of the Consulate of the Bights of Benin and Biafra and was a key slave trading port. In 1851 and with pressure from liberated slaves who now wielded political and business influence, Britain intervened in Lagos in what is now known as the Bombardment of Lagos or Capture of Lagos resulting in the installation of Oba Akitoye and the ouster of Oba Kosoko. Oba Akitoye then signed the Treaty between Great Britain and Lagos abolishing slavery.