US Highway 75 | ||||
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Central Expressway | ||||
Route information | ||||
Maintained by TxDOT | ||||
Major junctions | ||||
South end: | I-345 in Dallas | |||
I-635 President George Bush Turnpike in Richardson US 380 in McKinney |
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North end: | Collin-Grayson County Line | |||
Highway system | ||||
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Central Expressway is a north–south highway in Dallas, Texas (USA) and surrounding areas. The best-known section is the North Central Expressway, a name for a freeway section of U.S. Highway 75 between downtown Dallas and McKinney, Texas. The southern terminus is at an intersection with "hidden" Interstate 345 (signed as Interstate 45) and Woodall Rodgers Expressway. From south of Main Street and its crossing under the Interstate 45 overhead in downtown Dallas, Central Expressway became the South Central Expressway, renamed César Chávez Boulevard on April 9, 2010.
The North Central Expressway extends from Woodall Rogers freeway to the Sam Rayburn Tollway in McKinney. For its entirety, the highway contains at least six frontage road lanes alongside the mainlanes.
The road has 8 continuous general-purpose lanes from downtown Dallas to Legacy Drive in Plano except for a six-lane segment where it passes under Interstate 635 (two additional lanes are present but are only entrance ramps/exit ramps for Forest Lane and Midpark Road). A 16-mile bi-directional HOV system, opened in 2007, extends from Interstate 635 to McDermott Road in Allen. The expressway's junction with Interstate 635 is a five-level stack interchange known as the High Five Interchange, the tallest in the world. For the next six miles (10 km) north of downtown Dallas, the freeway lies more than 30 feet (9.1 m) below adjacent and partially cantilevered frontage roads. This 14-lane segment is one of the busiest highways in the nation, averaging approximately 350,000 AADT in 2013.