How about more toll roads in LA? 
I cannot see that happening. Louisiana is a POPULIST state. Suggesting any such thing would be political suicide for POLS.
Oh, they'll get the Gateway to the Gulf extension finished with tolls. Outside of that-not happening until Hell drops to zero Kelvin. On their own heads so be it.
"Gateway to the Gulf"??? What is that....I-49 South??
Maybe the P3 contract for the I-10 Calcasieu River Bridge in Lake Charles along with the dominant political settlement against public funding of expanding infrastructure will aid a push for more toll roads. More likely, it will be a slow road "pay as you go" approach using Fed funds and TIFIA loans to gradually build and upgrade.
No, Gateway to the Gulf is a raised expressway reroute of LA-1 from Leeville to the point where it turns hard to the east toward Grand Isle.
As to the P3 proposal for I-10 over Lake Charles, there are lots of environmental concerns to be addressed ahead of any actual dirt, concrete, or, steel can even be seriously considered,