Miss. Code Ann. § 65-1-83: Miss. Code Ann. § 65-1-83

The State Highway Commission shall continue through the State Highway Department to cooperate with the United States Department of Transportation, as necessary, in the taking of a traffic census and the making of other surveys, inspections or studies as said federal agency may request or require pertaining to or on the state highway system and such other roads, bridges and highways within this state as it may deem advisable.