The bridge within the park at Osterley is half a mile north east of the house. It was executed in accordance with Adam's design in Adam volume 51/1, rather than the more costly triple-arched schemes of Adam volumes 51/6-51-8.

There are four Adam office drawings for the bridge within the National Trust drawings collection at Osterley. These comprise a plan and an elevation for each of two alternative schemes. The first scheme is dated 1768, and composed of complete copies of Adam volume 51/8 and 51/7, and the second scheme is composed of a complete copy of Adam volume 51/6 and its matching plan. The client's copy of the executed bridge design was photographed in the early twentieth century, but has since been lost.