This study investigated road segmentation and its effect on road traffic congestion in Apapa (LGA) of Lagos state, Nigeria. The aim is to carry out spatial data structures of dynamic road segmentation of APAPA LGA showing the road segment (spatial data) and its topological information.. Survey research design was used to gather data through primary and secondary sources. The data collected were analyzed using ArcGIS 10.2 software to develop geospatial database for road congestion management and control. The results showed that road traffic congestion has negative effect on firms' performance in Apapa seaport and its environs. This paper concluded that economic activities within Apapa LGA have been negatively affected by road traffic congestion. It was recommended that firms can actually move to a more comfortable zone to reduce stakeholders such as customers' and employees' stress of entry and exit in that location and increase business owners 'chances of expanding their businesses.