Quantum Construction Consultants, LLC is a unique firm specializing in the bridge and roadway infrastructure needs of municipalities. Located in Concord, New Hampshire, QCC has been providing structural and civil engineering services to state, municipal, and private clients throughout New England since 1999. In addition to bridge and roadway infrastructure design, QCC is committed to providing quality engineering services including hydrologic and hydraulic analyses, drainage design, civil support services, structural design services, site design, construction support services, environmental permitting and dam design services. QCC’s engineering and design capabilities are complemented by our construction phase services.