(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. (5-23-09, N34 05.505 W77 55.300) Photos by Gary Stebbins.