Most cities outside of the NE spend all of their money on ENORMOUS highways. Atlanta, Dallas and Houston have some of the most beautiful highways in the nation bisecting, criss crossing and cutting through their metros. But highways destroy the asthetic value of a city and also kills walkability. Houston has like 4 beltways or loops by itself. Imagine now if they would have invested all of that money into public transportation? Makes you think huh? DC is the anti-highway city. The tried to build four freeways through DC but thank god it never happened.
Washington D.C. Interstates and Freeways
D.C. Interstate System
Mayor Fenty wanted to lower 395 (SE/SW freeway) and make it into a ground level parkway because it cuts off DT DC from the SW Waterfront but they scratched the idea. Developers in DC are about to build over the 395 trench from Mass Ave to E street and turn that into a mixed use deveopment.
LDPG : Louis Dreyfus Property Group (http://www.ldproperty.com/395_air_rights/overview.php - broken link)