Pill Bridge is a stone arch bridge over the River Yeo between the parishes of Ilchester and Long Sutton, in the English county of Somerset. It is a scheduled monument. The current 17th century packhorse bridge replaced an earlier 13th-century bridge at the same site. It was the unloading point for goods destined for Ilchester, 1.5 miles (2.4 km) downstream, until the conception of the Ivelchester and Langport Navigation. A warehouse at the site was used from 1699 until 1805. The bridge consists of three semi-circular arches. It is 48 inches (1,200 mm) wide and has a total span of 54 feet (16 m).