GSG provided Phase I & II engineering support for toll plaza improvements, including a detailed topographic survey of four plazas at the I-294/159th Street cloverleaf ramp system. Data was collected for potential plaza repairs, relocations, and replacements using GPS, conventional methods, and static laser scanning.

Scope of Services

• • Surveyed toll plazas and associated entrance/exit ramps
  • Employed GPS, conventional surveying, and laser scanning
  • Delivered MicroStation files, signed PDFs, hard copies, control points, topographic maps, and TIN files