Section 135 - Authority to construct dual and express highways(a) The Department may divide or separate any state highway into separate roadways wherever there is particular danger to the travelling public of collision between vehicles proceeding in opposite directions or from cross traffic, by constructing curbs, central dividing parkways or other physical separations, or by signs, marks or other devices, in or on the roadway, appropriate to designate the dividing line.(b) The Department may designate as express highways, and control public or private access thereto, the westerly approach or approaches to the Delaware Memorial Bridge and any road or roads heretofore or hereafter constructed by the Department for the purpose of connecting such Bridge or its westerly approach or approaches with any existing highway in this State. 34 Del. Laws, c. 78; Code 1935, § 5758; 45 Del. Laws, c. 270; 46 Del. Laws, c. 127; 47 Del. Laws, c. 406, §§ 1, 3; 17 Del. C. 1953, § 135.;