The former Bessom Bridge used to cross a stream that fed into the River Haddeo, while the new one crosses the north side of the lake.
When water levels drop, the old bridge can be seen from the new one.
Shipley said the changing landscape on Exmoor was “extraordinary”.
“The photographs are incredible, they’re just so dramatic of the bridge poking out from the silt and sediment that’s covered it.
“We live in an ever-changing world and it’s not a kind of fixed point where things stay the same, but then by contrast… there’s been a consistency of settlement and people living in farming and working in similar ways, so it’s that balance of understanding how the world around us is always changing and responding, but also recognising that some things are really consistent over time.”
She added that the historic bridge could be enjoyed from afar and asked visitors to refrain from walking on the dried-up section of the reservoir.
Elsewhere around the county, traces of centuries-old gardens were found in Bishop’s Palace in Wells, while relics of old structures were uncovered at Glastonbury Abbey due to the record-breaking summer temperatures.
