In this place the channel facing the sea was repaired by one of the Roman Legions. The Tenth Legion Fretensis added additional supports to the arcade. Note the pilaster in the center of this arch as well as a second reinforcing wall to the left. The circular elegance of the original construction was lost, but at least it won’t fall down (and hasn’t for nearly two thousand years!).
How do we know who did the work? A sticky tab was left behind. Ok, so it’s less like a sticky tab and more like an inscribed stone. You can see it (or a replica, in truth) in the upper right hand corner of the photograph. It rests between arches 37 and 38. The original inscribed stone has been removed.
It reads “IMP(ERATORI) TRIANO / HADRIANO AVG(USTO) / VEXILLATIO / LEG(IONIS) X FRET(ENSIS).
Negev believes the western side of the High Aqueduct was built shortly after the construction of the first (perhaps in the first century AD) and that the work done in the time of Hadrian (as attested in the inscription) was merely a repair job.
For more on this inscription and the repairs see A. Negev, “The High Level Aqueduct at Caesarea” in Israel Exploration Journal 14/4 (1964): 237-249.
A few seats have opened up on our Johnson University Study-Tour to Israel-Palestine slated for March 12-23, 2019. If you are interested in being a part of this high-energy student trip, contact me immediately at firstname.lastname@example.org. Don’t hesitate. Our roster must be finalized by mid-December. Academic credit is available.