Langdon-McDermott Covered Bridge
Sullivan County, New Hampshire 
New Hampshire No. 18 (WGN 29-10-06)  (WGCB NH-10-06):  (1869; restored 1961)  A single-span Town lattice truss with light Burr arches 81' over the Cold River.  Located: North of Alstead, New Hampshire off SR 123A.  Directions:  About 2 miles north of Alstead, New Hampshire on SR 123A then left 0.1 mile left to the bridge on east side of the road.  It is braced by cables attached to the new highway bridge that bypassed it in 1964. It is now used for foot and snowmobile traffic only.  Three bridges previously stood on this site. They were built in 1790, 1814, and 1840 and were all of the pole and plank type. The current bridge was of a type patented by Sanford Granger in 1833. The patent appears to be a modification of the Town lattice truss.  Granger, owned a sawmill on Fall Mountain Brook from 1838 until 1851. Virgin timber removed from the mountain was used in the construction of his bridges. The current structure was built by his son Albert S. Granger.   In 1961, an estimate of $7,000 was given to the town for the restoration of the bridge with the town paying $2,100 and the state $4,900.   However, in 1964 the town decided to establish a sinking fund to pay for building a modern bridge which was built downstream under the Town Bridge Aid Program and the covered bridge was closed to vehicular traffic but retained for historic reasons. The structure is also known as the Cold River Covered Bridge.  It was listed on the National Register of Historic Places May 17, 1973. (Sep 2004)
Covered Bridges Main Index New Hampshire Main Index Home