Erica L. Kurtzhalts, office manager for Mastec North America, and Justin T. Wallens, an Erie County assistant district attorney, were united in marriage at 1 p.m. Saturday in St. John the Evangelist Catholic Church. The Rev. Robert M. Mock performed the wedding ceremony. A reception for the couple was given in Fairdale Banquet Center. The bride is the daughter of James and Marilyn Kurtzhalts of Buffalo and the bridegroom is the son of Dr. W. Todd Wallens and Sally Wallens, both of Grand Island. The bride is a graduate of University at Buffalo. The bridegroom also is a graduate of UB and received a juris doctor degree from its Law School. The newly married couple will make their home in Amherst after returning from a trip to Aruba.