But Trump won and this was one of his political issues.  

As Obama said "Elections have consequences."

Trump, and the Republican Congress, will develop their own definition of 'infrastructure' and fund that.   They may even throw some money out for Trump's Wall just to help their election chances in two years.  

 Cut a few billion out of Health and Human Services to fund it?  Cut out a few millions from Federal Grants for Social Research at Duck U and similar institutions and from all the government agencies who fund those universities?  

I'm betting that they fund infrastructure primarily in the Red States, however.  Texas and  Arizona would be good Republican places to put in Wall foundations, for example.  

Blue California and Blue new York will get their money, of course.  Too big to ignore.  

 Blue Oregon?  They'll get the crumbs.