SQN provided construction engineering services for CDOT’s citywide traffic control improvement program, supporting more than 200 locations throughout Chicago. The project included installation and modernization of traffic signals, pedestrian countdown signals, detection cameras, ADA-accessible signals and ramps, pavement markings, signage, and related infrastructure improvements. SQN provided field inspection, contractor monitoring, quantity tracking, material inspection, daily reporting, and pay estimate support.
Sine Qua Non | Absolutely Essential