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The Grand Parkway Project

The Grand Parkway Project is a 184-mile highway project in various phases of development around the greater Houston area and spread across the seven counties of Brazoria, Chambers, Fort Bend, Galveston, Harris, Liberty and Montgomery. Once complete, it will be the largest loop serving the region.

The purpose of the Grand Parkway Project is to:

  • Improve the transportation network in the Houston–Sugar Land–Baytown metropolitan area
  • Relieve traffic congestion and enhance travel options on the surrounding major roadways, including I-10, I-45, US 59 and US 290
  • Improve safety by reducing unsafe "stop and go" conditions
  • Accommodate demographic and economic growth

The Grand Parkway is divided into 12 segments, several of which are in the Corporation’s Grand Parkway System. Segment E and the tolled portions of Segment D in Harris County opened to traffic in December 2013, and tolling commenced in February 2014 (except for the direct connectors at I-10). Segments F-1 and F-2 opened to traffic on Feb. 5, 2016, and both began tolling on Feb. 15, 2016. Segment G opened March 29, 2016, with tolling commencing April 4, 2016.

I-2A, a portion of Segment I-2, opened in 2008 and began tolling in November 2011; this partial segment became part of the Grand Parkway System on June 30, 2017. GPTC became responsible for the operations and maintenance of Segment 1-2A when the other portions of Segments H and I reached substantial completion May 16, 2022 and Segment 1-2A toll revenues began flowing to the GPTC upon commencement of tolling of the entirety of Segments H and I, which began on May 21, 2022.

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