Remembering that the water in mid-channel is twelve feet deep, with a twelve-mile current, we must concede this to be the most marvelous of all aquatic achievements.
In 1817 Judge Porter built the first bridge to Goat Island, about forty rods above the present bridge. In the following spring the large cakes of ice from the river above, not being sufficiently broken up by the short stretch of rapids over which they passed, struck the bridge with terrific force, and carried away the greater part of it. With the courage and enterprise of a New-Englander, the next season he constructed another bridge farther down, on the present site, rightly judging that the ice would be so much broken up before reaching it as to be harmless.
That bridge, with constant repairs and one almost entire renewal, stood firm in its place until the year 1856, when it was removed to make room for the present iron bridge. The old piers were much enlarged and strengthened, and also raised about three feet higher to receive the new bridge. As nearly every stranger inquires how the first bridge was carried over the turbulent waters, a brief description of the process may be acceptable. First, a strong bulkhead was built in the shallow water next to the shore; a solid backing was put in behind this, and the upper surface properly graded and well floored with plank. Strong rollers were placed parallel with the stream and fastened to the floor. In the old forest then standing near by were many noble oaks, of different sizes and great length. A number of these were felled and hewed "tapering," as it was termed, so that, when finished, they were about eighteen inches square at the butt, fifteen at the top, and eighty feet long. Through the small ends were bored large auger-holes. These sticks were placed, as required, on the rollers, at right angles to the stream, the small ends over the water, and the shore ends heavily weighted down.
[Illustration: SECOND MOSS ISLAND BRIDGE]
The first stick being properly placed, levers were applied to the rollers and the stick was run out until the small end reached an eddy in the water. Then another similar stick was run out in like manner, parallel to the first, and about six feet from it. A few light, strong planks were placed across and made fast. Two men were provided each with strong, iron-pointed pike-staffs, each staff having in its upper end a hole, through which was drawn some ten feet of new rope. Thus provided, they walked out on the timbers, drove their iron pikes down among the stones, and tied them fast to the timbers. Thus the whole problem was solved. Around these pike-staffs the first pier was built and filled with stone. Then other timbers were run out, all were planked over, and the first span was completed. The other spans were laid in the same way.