Population and traffic growth
Texas grew by 4.3 million people between 2000 and 2010, an increase of 20.6%. The counties along the
I-69 Texas system grew even more, by 23%, and have 8 million residents. Some counties along the I-69 system had population increases over 50% from the 2000 to the 2010 Census. Ports along the Texas Gulf Coast and inland ports on the Texas-Mexico border anticipate a dramatic increase of cargo in the coming years.
Interstates provide greater safety because they have bridges and overpasses at crossroads and entrance and exit ramps. A four-lane divided interstate can reduce severe traffic accidents as compared to the current two- and four-lane roads. Based on 2009 statewide crash rates, interstate highways in Texas experience 20-30 percent fewer crashes than US highways