In the future, highways A2 and A30 will be linked by a four-lane route approximately 11.5 km long. An important component of this construction project is the 450 m long Hahnenkamp Tunnel that will help ease traffic in the city centre of Bad Oeynhausen. The project also includes trough structures directly connected to the tunnel at either end, with the one in the North measuring 178 m in length, the one to the South 138 m.