 SANRAL commenced with toll feasibility investigations in 2001 for the N17 after which consultants were appointed for the rehabilitation, upgrading as well as design of new sections for the N17 from Springs to Ermelo.In order to enable SANRAL to refund loans for the funding of the rehabilitation project, it was inevitable that the N17 from Springs to Oshoek in the Mpumalanga Province would also be declared a continuous toll road and toll plazas will be erected.The existing single lane carriageway between Springs and Leandra has been rehabilitated with improvements to the vertical and horizontal alignment, paved shoulders, grade separated interchanges at the R548 (Devon/Balfour) and R42 (Delmas/Nigel), and climbing/passing lanes.