The Spring River Bridge, is a historic bridge carrying Riverview Drive over the Spring River south of Mammoth Spring, Arkansas. The bridge is a concrete girder structure with five spans, and a total length of 222 feet (68 m). The bridge is about 10 feet (3.0 m) wide, with simple cast concrete guard rails. The bridge rests on concrete abutments and piers. The bridge was built in 1916 by H. B.