Map for Franklin County Engineer; Cornell Robertson Map for Franklin County Engineer; Cornell Robertson Search | Advanced Search | New Members | Coupons and Discounts | All Categories Government & Education >> Government Support - Executive, Legislative & Other Franklin County Engineer; Cornell Robertson 970 Dublin RoadColumbus, OH 43215 | directions (614) 525-3043 | fax: (614) 525-3359 Visit Site Need to update your categories or expand your listing? Or want to learn how your business can become a part of the Chamber? Contact us at membership@columbus.org for assistance.