The Standard Specifications for road and bridge construction in Mississippi have been prepared, examined and recommended in the manner and form set out in a book entitled "Mississippi Standard Specifications for Road and Bridge Construction"--"Mississippi Department of Transportation, Jackson"--"2004 Edition", and a copy has been filed in the office of the Secretary of the Mississippi Transportation Commission. It is hereby ordered that such specifications are approved and adopted as of this date for all road and bridge construction except as may be designated otherwise in the contract documents for work already advertised or under construction.