The A4 highway is a major north–south route in Nigeria that spans from the southern coast to the eastern inland region, connecting various cities and regions.

Route description

The A4 highway starts at the city of Calabar in Cross River State, positioned in the southern part of the country. The A4 then travels northwards, running parallel to the Nigerian-Cameroonian border. The route includes several key cities and towns: The A4 highway merges with the A3 highway near the city of Maiduguri in Borno State, providing a vital link between the southern coastal regions and the northeastern part of Nigeria.

Major junctions

The A4 highway intersects with other major routes at various points along its course, facilitating travel and trade across Nigeria. Notable junctions on the A4 include:

Cities along the A4 highway

The A4 highway connects several major cities and towns in Nigeria, facilitating both intra-city and inter-city transportation. Prominent cities along the A4 route include: The A4 highway's geographical significance and its role in enhancing connectivity in Nigeria make it a crucial part of the nation's road network.