Winchester Bridge Reserve is a Timaru District Council freedom camping area situated alongside the Waihi River, which flows from the Four Peaks Range through the Geraldine district toward the Opihi River near Temuka.

The site sits in Canterbury's South Island and offers a large, grassy camping area with open skies. Both self-contained and non-self-contained camping is permitted, with a maximum stay of three nights.

Facilities include drop toilets, picnic tables, and rubbish bins. Campers are asked to arrive after 4pm and depart before 10am, and to follow responsible camping practices throughout their stay.