The A4 highway is a highway in Nigeria. It is a north-south route from the south coast to inland in the east of the country.
It runs from Calabar near the coast through Ikom in Cross River State; Katsina Ala in Benue State; Uto in Akwa Ibom State; Wukari in Taraba State; and Numan in Adamawa State — to join the A3 highway near Maiduguri in Borno State.
References
A4 highway (Nigeria) Wikipedia(Text) CC BY-SA