Both Trump and Clinton have stated that they will put significant resources into infrastructure improvements - "shovel ready" projects are always high on the list.  So under either administration it is possible that additional Federal funding will be available.

As you may be aware, because of how Djou set up HART to give the Mayor and Council extremely limited oversight of rail, it will be hard for either candidate to "tighten the purse strings" on rail contracts unless the charter amendment to fix it is passed.  More likely that if given the opportunity, Djou would tighten the purse strings in the way he tried to do for 8 years on the council - by gutting and slashing city services.  He has already announced he would cut luxury property taxes - scary to imagine what city services he would cut to pay for that wealthy tax break.