Military railroad bridge over Potomac Creek on the Richmond, Fredericksburg & Potomac Railroad, built by the U.S.M.R.R. Construction Corps, C.F. Nagle, supervisor / photographed by Capt. A.J. Russell, chief of Photographic Corps, U.S.M.R.R.

Photograph shows a trestle railroad bridge built of timber by the United States Military Railroad Construction Corps over Potomac Creek.
Printed below image: Total length, 414 feet. Height, 82 feet. Contains 204,000 feet timber board measure. Work begun Friday, May 20, 1864, at 5 A.M. Train passed over May 22d, at 4 P.M. Actual time of construction, 40 hours.