Constantine Bridge

See:

1. https://www.anatolianroads.org/ancient-bridges-of-asia/
2. Edward Smedley et all. Encyclopædia Metropolitana, Tom 22, 1845, p.428
3. F. W. Hasluck, A Roman Bridge on the Aesepus, n:  The Annual of the British School at Athens, Vol. 12, (1905/1906), p. 189
4. Maximilian C G Lau, "‘Ioannoupolis’: Lopadion as ‘City’ and Military Headquarters under Emperor Ioannes II Komnenos" Pre-Publication Version, https://www.academia.edu/23757150/_Ioannoupolis_Lopadion_as_City_and_Military_Headquarters_under_Emperor_Ioannes_II_Komnenos_Pre_Publication_Version