TxDOT releases update on VZC construction projects Posted in: News Van Zandt County – Canton Maintenance crews plan to conduct overlay operations on I-20 service roads between Mile Markers 515 and 517. Expect lane closures with flaggers providing traffic control. Van Zandt County construction projects updates: SH 64 Widening Project Limits: From FM 16 to FM 858 Contractor: Big Creek Construction Cost:PLEASE LOG IN FOR PREMIUM CONTENT. Our website requires visitors to log in to view the best local news. Not yet a subscriber? Subscribe today!