People who cross the Neponset River between Dorchester and Milton on Granite Avenue traverse a bridge that looks like, and is, a relic of the days when the Neponset River was a working river.

The nation's first railroad, built in 1826, ferried granite blocks from a Quincy quarry to a wharf on the banks on Gulliver's Brook, which is just upstream of the bridge, and from which the builders of the Bunker Hill Monument got their granite blocks.

Schooner being loaded with blocks from the Quincy railway (the three-wheeled thing is one of the "cars"- from the BPL's photo collection):