After the awarding of the contract or contracts, all work performed under the contract or contracts shall be under the direct supervision and direction of the Director of Operations of the Department of Transportation, which Department shall be reimbursed at the rate of 10 percent of the contract bid.

45 Del. Laws, c. 123, § ?18; 9 Del. C. 1953, § ?521; 53 Del. Laws, c. 255; 60 Del. Laws, c. 503, § ?22; 60 Del. Laws, c. 609, § ?5;