Mai Son – National Road 45 expressway is a component of the North-South Expressway Project in the East.
The total length of the project is about 63km. The starting point is at Mai Son intersection (Km274 + 065) in Yen Mo district, Ninh Binh province; the ending point is at Km337 + 000 near the intersection with Nghi Son - Tho Xuan road, in Nong Cong district, Thanh Hoa province.
Deo Ca Group leads the consortium to implement package XL12.