Trezzo sull'Adda Bridge built
1377 CE.
Shown on the map at 45.612°, 9.523°.
The Trezzo sull'Adda Bridge or Trezzo Bridge was a medieval bridge at Trezzo sull'Adda in Lombardy, Italy, spanning the Adda river. Completed in 1377, the single-arch bridge held the record for the largest span for over four hundred years, until the beginnings of the Industrial Age, while it was not until the early 20th century that masonry bridges with larger openings were constructed.
Text from the Wikipedia article Trezzo sull'Adda Bridge, licensed CC BY-SA 4.0.