ABOUT TRI HI CUSTOMER ONLINE CAREER OPPORTUNITIES Contact Us At Tri Hi Transportation, we value consistent and quality communication. To get in touch with any of our employees, please follow the contact information below. Or, scroll to the bottom of this page to fill out a contact form. Corporate Headquarters Tri-Hi Transportation N3163 Hwy 107 Merrill, WI 54452 P: 715-536-9860 F:715-536-4790 Get In Touch Tri Hi Transportation N3163 Hwy 107 Merrill, WI 54452 P: 1.800.536.9860 Find Us Copyright 2013 Tri Hi Transportation. Designed by Renewed Web Design TOP LOGIN