. . 11 pairs 13 feet apart and 15 feet between the two rows, driven 4 to 5 feet below the bed of the river. These piles supported a narrow bridge 143.9 feet long, and were a part of the coffer-dam within which the conduit was built beneath the river.
This conduit here consisted of two 36-inch iron pipes, placed five feet from centers, laid in and covered with concrete and puddled on either side.
The cost of this (bridge and pipe) section was $6,700.00.
We were told years ago by Supt. Luther Symmes, that at that time the commissioners made effort with Medford selectmen to have our town share in the expense of a wider and more desirable bridge, as this was in the line of a proposed street, but without success.
Built as originally designed, and though the traveling public had no right therein, it served as the only passage across the river between Harvard avenue and Winthrop street until Canal bridge and Boston avenue were opened.
It continued in use until 1910, and since its re