The bridges includes two structures, one located at Upper Manilla across the Borah Creek; and the other across the Oakey Creek. Opened in 1908, it has three timber truss spans and is a good example of the deck Howe truss. This type of truss bridge was introduced in 1902 and used until 1908. Other examples are across the
Murrumbidgee River at
Gundagai (1905), and at Oakey Park, north of the present bridge. The bridge is of considerable technological significance. The bridge carries a single-track railway on an open deck (with transoms). The spans are , three at , , and , of which the three larger spans are timber trusses and the other timber girders. The trusses are deck-type Howe trusses of the deck-type, with timber compression diagonals, steel tie rods for the verticals and five bays. The piers are timber, with concrete bases. The bridge was listed on the (now defunct)
Register of the National Estate on 18 April 1989.
Oakey Creek underbridge The Oakey Creek Bridge is a Howe timber truss railway underbridge located at Upper Manilla across the Oakey Creek, situated from Central station, also completed in 1908. The bridge is a significant technical accomplishment. It was opened in 1908 and has five timber truss spans. It is a good example of the deck type Howe truss, introduced in 1902 and used until 1908. Other examples are across the Murrumbidgee River at Gundagai (1903) and at Borah Creek, south of the present bridge. The bridge carries a single-track railway on an open deck (with transomes). The spans are , five at and , of which the five larger spans are timber trusses and the others timber girders. The trusses are deck type Howe trusses, of the deck type, with five bays, timber compression diagonals and steel tie rods for the verticals. The piers are timber. The bridge was listed on the (now defunct) Register of the National Estate on 18 April 1989. == Heritage listing ==