The Coastline Transnational Highway project, also known as the East African Coastal Corridor Development Project, is financed by the African Development Bank (AfDB), European Union, and the governments of Kenya and Tanzania. Its goal is to boost regional integration, expand cross-border trade and tourism, and support socio-economic development. The project focuses on improving road transport infrastructure along the Kenya-Tanzania coastline, particularly between Mombasa and Bagamoyo.

Since 2022, Bank Information Center (BIC), Collaborative Centre for Gender and Development (CCGD), WeRise Africa, and other civil society organizations (CSOs) have actively monitored the project in Mombasa, Kwale, and Kilifi counties (located in the Kenyan coastal region). CSOs have engaged the AfDB, the Kenya National Highways Authority (KeNHA), various Kenyan government agencies, and contractors on child protection concerns, especially regarding sexual exploitation, abuse, and harassment (SEA/H). Over the years, advocacy from CSOs has led to some improvements in how AfDB and KeNHA engage with groups raising these concerns.