Crossing the Marys River in Benton County is the Marys River Covered Bridge, also known as the Harris Bridge. Records show that it was built in 1936 as a replacement to an older covered bridge on the site, but some locals claim that the bridge was constructed before the Depression Era, sometime in 1929 to be exact.

The span was also known as Harris Bridge following the name of the community it serves. From the time that the area was formed and the post office was established, residents already wanted to name their area Harris, although postal authorities declined as it may cause confusion with the nearby Harrisburg. It was named Elam for a while and then changed to Harris later on.

The Marys River Covered Bridge measures 75 feet in length and has a Howe truss design.