Current condition
Ruin
Date completed
(Day, Month, & Year are approximate.)
The 21-Arch Section was declared as monument under the 22 Historical Structures of Tai Tam Group of Reservoirs in 2009.
https://www.amo.gov.hk/en/historic-buildings/monuments/hong-kong-island…
Comments
Tunnel, Conduit and Arches
The number of arches is mentioned hereunder.
"From the Tytam (sic) Reservoir, water is conveyed into town by means of a tunnel, a mile and one third in length and a conduit along the hillside some 400 feet above the sea level and nearly four miles in length, on which a fine road - called the Bowen Road - has been formed, which commands the most charming views of the city and the eastern district, and is a favourite resort of pedestrians In many parts, the conduit is carried over ravines and rocks by ornamental stone bridges, one of which, above Wanchai, has twenty-three arches."
Source: The Directory & Chronicle for China, Japan, Corea, Indo-China, Straits Settlements, Malay States, Siam, Netherlands India, Borneo, the Philippines for 1909. Available online on Google Books.