TEXARKANA, Texas — The biggest construction project ever attempted in Texas comes under public debate beginning Tuesday in the first of a series of town hall meetings about a proposed 4,000-mile network of superhighway toll roads. The Trans-Texas Corridor, or TTC, as it's become known, was initiated six years ago by Gov. Rick Perry. It's rankled opponents who characterize it as the largest government grab of private property in the state's history and an unneeded and improper expansion of toll roads. Texas Department of Transportation officials, and Perry, have defended the project as necessary to address future traffic concerns in...