Iron bridge (Walnut St., 2,370', 1891) in Chattanooga, Hamilton County, TN. TN389 (4th St.) E. 0.35 miles from jct with I124 in Chattanooga, N. on Walnut St. 0.25 miles to the bridge. Now a pedestrian bridge. (7-16-08, N35 03.491 W85 18.448) Photo by Jack Schmidt.