The Slate Covered Bridge is a wooden covered bridge that carries the Westport Village Road (formerly New Hampshire Route 10) over the Ashuelot River in Westport, a village of Swanzey, Cheshire County, New Hampshire.

It is the second bridge in this location, the first having been built around 1800. In 1842 William Wheelock was halfway across the earlier bridge with a span of four oxen when the bridge collapsed dropping both drivers and animals into the river. Although no one was hurt, Wheelock engaged an attorney from Keene to seek damages from the town. The current bridge was damaged by a snowplow in 1987 and was repaired at a cost of $2,000. On March 8, 1993, the Slate Bridge was destroyed by fire. At the time of publication, the town of Swanzey had expressed the intention to replace the structure with a new covered bridge. The bridge was built in 2001, as a replacement for the 1862 bridge.

The 1862 bridge was a single-span Town lattice truss, with a span of 122 feet and a roadway width of 17 feet. Its name derives from a family that lived nearby at the time of its construction. It rested on abutments of split granite and was covered with a tin roof. Its sides were fully sheathed, and it had numerous repairs and parts replaced.

Of the 400 covered bridges that once stood in the state of New Hampshire, as of 2019 only 54 remain.

It was listed on the National Register of Historic Places in 1978.

Located at:  N42 50.845    W72 20.421     -     WGCB #29-03-06

Photographed in July of 2019.