Tri-county Engineering Inc 193 E Collier St Troy, MO 63379 Phone : (636) 528-7110 Business Category Government Offices-County Surveyors-Land Surveying Services Legislative Bodies Lincoln County--surveyor 193 E Collier St Troy, MO 63379 Phone : (636) 528-7110 Business Category Government Offices-County Surveyors-Land Engineering & Architectural Services Surveying Services Government Offices & Public Schools