A9 highway (Nigeria)
The A9 highway is a major highway in Nigeria, located in the northern region of the country. It serves as a vital transportation link, connecting several key cities and facilitating both domestic and international trade. History 
The history of the A9 highway is intertwined with the development of northern Nigeria. Originally conceived as a single-carriageway road, it has undergone several phases of expansion and improvement over the years. The government of Nigeria has consistently invested in the enhancement of this critical transportation corridor, resulting in the significant upgrade to its current dual-carriageway configuration. Route description 
The A9 highway starts at the Nigerian border with Niger Republic in the town of Jibiya. From there, it extends eastward, traversing the picturesque landscapes of northern Nigeria. One of its major cities of significance along this route is Katsina, a prominent cultural and economic hub in the region. The highway continues its journey, finally terminating at a junction with Trunk Road A2, located approximately 14.4 kilometres north of Kano, one of Nigeria's largest and most populous cities. The highway's eastern terminus at Jibiya serves as a critical border crossing point into Niger Republic, connecting Nigeria to the neighbouring country's road network. In Niger, it connects with the N9 highway, which further leads to the city of Maradi. This international link plays a pivotal role in promoting cross-border trade and regional cooperation between Nigeria and Niger. Development and upgrades 
As of 2019, the A9 highway underwent significant upgrades to enhance its capacity and safety. These improvements included the expansion of the highway to feature two lanes in each direction, allowing for smoother traffic flow and reducing congestion. The upgrades aimed to meet the growing transportation demands of the region and improve the overall connectivity of northern Nigeria. Major junctions 
The A9 highway intersects with several other major roads during its journey, facilitating connectivity to various destinations. Notable junctions along the A9 route include the junction with Trunk Road A2 north of Kano, which provides access to the city's urban centers. Additionally, the highway connects with Miltara, contributing to the accessibility of this area. List of cities 
The A9 highway serves as a lifeline to numerous cities and towns in northern Nigeria. Notable cities along its route include:
 Kano: Located in the northwest of Nigeria, Kano is the state capital and a major centre of commerce, culture, and industry in the region. Katsina: Situated along the highway's path, Katsina is renowned for its historical significance and serves as a key economic hub. Jibiya: This border town at the frontier with Niger Republic plays a crucial role in international trade and cross-border cooperation. The A9 highway's strategic significance and its role in promoting economic development make it a vital component of Nigeria's road network. References 

Highways in Nigeria
Niger–Nigeria border crossings