Grand Parkway Infrastructure (GPI) Categories Engineering Consulting 7560 FM 1960 Dayton TX 77535 (877) 553-7374 (832) 412-3513 Grand Parkway Infrastructure About Us Design builders for SH 99 Grand Parkway Segments H, I-1 and I-2. Rep/Contact Info Heather DeLapp Phone: (877) 553-7374 Send an Email Share × Print Email Facebook Twitter LinkedIn Tell a Friend ×