(River Island, 57', 1991, 33-65-A) across marsh of Cape Fear River S. of Wilmington, Wilmington Township, New Hanover County, NC. US421 S. 7.8 miles from jct with US17/74/76 (Dawson St.) in Wilmington, W. on Sanders Dr. 0.9 miles, continue W. (curves S.) on River Rd. 2.4 miles to the bridge on the W. side of the road. (N34 05.507 W77 55.301) Photos by Gary Stebbins 5-23-09.