TL;DR version:<p>- Urban highways cost more money than urban transit<p>- They divide cities logistically.<p>- Introduce pollution<p>- Are very unsightly to neighborhoods<p>- Steal traffic from roads in commercial zones and undermine regional commercial activity.<p>- Put emphasis on car-first neighborhoods and businesses (which give little ROI).<p>- Encourage urban sprawl and community inefficiency.<p>My take:
These points are understood and expected from urban highways, but then again urban highways were meant to solve a different problem.  The points are simply what the solution costs.