The sequence of tugboat pictures is making its way around the internet at warp speed. Apparently, however, the incident was in the late 70's. The tug was deliberately dropping off the barges which would fit under the span. A line snagged, keeping the tug from running around through the open draw and back to the barges. Another tug recovered the barges and helped the tug to shore. No casualties except one drowned engine and some wet areas. The photos were printed in a newspaper, and then rumor has it the negatives were bought by a tug company and deep sixed until now.