Certifications from a State Highway Agency or National Entity such as ACI (American Concrete Institute) or NICET (National Institute for Certification in Engineering Technologies) in earthwork, asphalt, and concrete if required by the client or jurisdiction in which they will be working. Work will require the knowledge of materials, methods, and equipment used in highway construction; knowledge of geometry and basic mathematics; ability to read, interpret and explain construction plans and drawings, contract provisions, and specifications; and communications ability.