We visited this bridge during our stay in Albania and were surprised the was no cache at this great location. So now there is!
The Mesi bridge crosses the Kir river. In summer the river stands dry, but after the winter the water can get pretty high we've heard. The bridge is 108m long, 3.4 meters wide, 12.5 meters high with 13 arches, and is one of the longest examples of an Ottoman bridge in the region. It was built in the 18th century, around 1770, by Kara Mahmud Bushati, the local Ottoman pasha.
The cache is a petling so no room for TB's.