This is the Paul Revere bridge in Concord, MA where a car collided into the wall.

Since this bridge was a historical piece, the stones were numbered and pictures were taken to ensure that the stones would be mortared back in exactly the same spots.

Taking down the damaged section.

Mortaring the large granite stones into place while working off of a boat.

A newspaper clipping from the Concord Journal describing the work entailed.

The Cradock Bridge in Medford, MA was also struck by a vehicle.

Stones were loosened and had to be reset.

Here we are working off of a scaffold plank on the opposite side of the wall.

Here we are setting the large granite stones in place with a forklift.