Forsythe & Long Engineering, Inc. Share: Engineers Forsythe & Long Engineering, Inc. Visit Website 4560 Helton Drive Florence, AL 35630 (256) 766-6713 (256) 766-7113 (fax) About Rep Info Map About Design / Build Services, Engineering, Custom Machinery, General Contractors, Maintenance Services, Enviornmental Consulting Whom to Contact Ms. Margaret Forsythe President What's Nearby? Distance: 5 10 15 20 25 50 mi.