My first reaction on seeing the words "verbal agreement" is "you got jack shit". Nothing happens in DC on just a verbal agreement, and definitely not some multi-billion dollar porkstravaganza.
Do you think he called Donald Trump directly and said "I'd like to do a bigly infrastructure project, would you like that?"
Also, is he planning to build a tunnel from DC to NYC? That would be by far the longest tunnel in the world. The current record holder is the Guangzhaou Metro tunnel, at 37.5 miles. This tunnel would be over 200 miles long, probably closer to 225.