Again, they've retrofitted an underpass at Studemont, Yale and now that I think about it, Houston Ave. Studemont stays busy, but neither Yale nor Houston really warrant the underpasses, so economics and traffic flow are probably not the biggest reasons for getting this done. I can't fathom why Yale has the underpass, but neither Heights Blvd, Durham nor Shepherd have it. Also (and again now that I think about it), if they were to build any tunnels from the Galleria area to the innerloop bypassing the train tracks, it would make much more sense to do it on Richmond and San Felipe. There's already considerably less traffic that would be displaced by the construction, and the land is considerably less congested with development currently. But, if this wasn't built on all three roads, including Westheimer, I could foresee the residential neighborhoods separating the streets would become high speed racing paths as impatient people would try to avoid waiting by taking the backroads to get around the train. There is no good solution unless it's a complete solution.