N4 road (Senegal) need to be nearly 1000 metres long with 500 metres long access roads through the riverside swamps. An alternative (smaller) route is the N5 via Bignona and Banjul, crossing the Gambia river by ferry at Banjul and rejoining the N4 just south of Kaolack. N4 road (Senegal) The N4 road is the Trans-Gambia Highway extension in Senegal, which is the main connection between the Casamance area in the south and the capital Dakar. The road runs north from Ziguinchor in Casamance to Bignona, crossing the Casamance River. It runs north-east to Bounkiling and then north to traverse the country of
Banjul and a relatively short wet season covering the remaining four months. However, during those four months, Banjul tends to see heavy precipitation. August is usually the rainiest month, with on average 500 mm of precipitation falling. Temperatures are somewhat constant, though it tends to be slightly cooler during the wet season than the dry season. According to a Gambian government minister, Banjul is at risk of submerging under water by a metre rise in sea levels as a result of climate change and global warming. The primary method reaching the city by land is by roadway. A highway connects Banjul