Current SDDOT DBE Directory Current Excel SDDOT DBE Heavy Highway Contractors Directory Click here Click here Go back to directory. Expert Approach, Inc. Expert Approach, Inc. Contact: LD Herrera Work 7 E. Main Street Vermillion SD 57069 United Stateswork Work Phone: (605)655-2182work Work Fax: (703)229-8691workfax Work Email: LD@ExpertApproach.comINTERNET Capability Statement: Expert Approach Biographical Info Work Area: Statewide NAICS Codes: 518210, 541511, 541512, 541519, 541613,561499, 561920 Services Performed: Computer installation and training, Hardware/software re-seller, Information technology services, Supplier – computer hardware/software MBE:Y MWBE:N WWBE:N DBE:Y ACDBE:N Categories: 518210, 541511, 541512, 541519, 541613, 561499, 561920 Updated 1 year ago.