Interstate highways that serve Dallas are:
I-20 (west: Abilene, TX; east: Shreveport, LA)
I-30 (west: ends just west of Fort Worth; east: ends at Little Rock, AR)
I-45 (north: merges into US-75; south: Houston, TX)
I-35E (north: merges into I-35 at Denton, TX; south: merges into I-35 near Hillsboro, TX)
The City of Dallas homepage is located at: http://www.ci.dallas.tx.us/
(As of October 2001, this points to http://www.dallascityhall.com/)