In early 2015, JL Paterson & Associates (JLP), now part of Jacobs Engineering Group, received the assignment to undertake engineering design work for the Los Angeles to Anaheim corridor, a pivotal component of the California high-speed railroad system. The task at hand was formidable: there existed no surveying data for the corridor, which stretches 30 miles (48km) in length and 1,500 feet (457m) in width, accommodating up to 100 trains daily.