I'm posting this here because the CSX Track Upgrades thread has gone off topic------ Today at Gilson Rd. Littleton there are 8 precast concrete foundation subbases, one riser, and 2 signal foundation bases placed west of the crossing by a CSX boom truck. Also present is a mini-excavator . See photo------
How these pre-cast pieces work-------
https://www.amconco.com/railroad-produc ... -railroad/