Janssen & Spaans Engineering, Inc. (JSE)

Janssen & Spaans Engineering (JSE) is a civil and transportation engineering firm that specializes in road and bridge design, including complex bridge design and construction‑related services. Their work includes design‑build projects, bridge replacements and rehabilitation, construction inspection, independent peer reviews, traffic and hydraulic design, value engineering, and consulting services for state and local governmental agencies, consultants, and contractors across the United States and internationally.