RI 6-10 interchange reconstruction (Providence area)

[M3100]

A recent article I saw on a railfan board noted that Rhode Island officials are investigating an accusation about the fill dirt used at the US Route 6-RI State Route 10 interchange west of Providence. 

The union representing the heavy equipment operators brought up the issue; evidently the sandy soil at the interchange location was mixed with fill material excavated from a rail station project managed by the same construction firm.  The fill dirt from the station project included oil and other material not suitable for fill. Details at https://www.ecori.org

[The Ghostbuster]

While they're at it, could they install exit numbers on US 6/RI 10 (preferably a continuation of RI 10's exit numbers)? Then they should install exit numbers on the US 6 Dennis J. Roberts Expressway, via the mileage of US 6 from the Connecticut/Rhode Island border.