By Patrick Driscoll, San Antonio Express-News Knight Ridder/Tribune Business News
Dec. 17--The Texas Transportation Commission selected a construction consortium that includes a San Antonio firm Thursday to build the first leg of the Trans Texas Corridor -- launching what officials called the nation's most important highway project since the 1950s.
The group, led by Cintra of Spain, will build and operate the corridor's first segment of toll roads from Dallas to San Antonio.
Zachry Construction Corp. will partner with Cintra on the 10-year project, the first phase of a 50-year venture promising greater mobility for drivers and profits for the operator.
Cintra will invest $6 billion over the next decade to construct the four-lane toll road and …