Separation of throughways into separate roadways; ingress and egress. (1) The Department of Transportation may so design a throughway and so regulate, restrict or prohibit access thereto and use thereof as to best serve the traffic for which the throughway is intended. In this connection and for such purpose the department may divide and separate any throughway into separate roadways or lanes by the construction of raised curbings, central dividing sections or other physical separations, or by designating separate roadways or lanes by signs, markers or stripes and the proper lanes for traffic by appropriate signs, markers, stripes or other devices

(2) After any highway has been so marked or designed no person has any right of ingress or egress to, from or across the highway to or from abutting lands, except at such points as may be designated by the department.