(Williamsburg Village, 44', 1986', 13-16-D) in Williamsburg Village Professional Offices in South Barrington, Cook County, IL. IL62 (Algonquin Rd.) E. 2.4 miles from jct with Freeman Rd. in South Barrington, N. on Roselle Rd. 0.4 miles, W. on Colonial Pkwy into Williamsburg Village Professional Offices & continue S. & back E. on Colonial Pkwy 0.3 miles to bridge. (2-26-05, N42° 04.950', W88° 04.733')