Janssen & Spaans Engineering (JSE) has provided engineering excellence for over 40 years. We specialize in road and bridge design, including major design-build and complex bridge projects.

Our award-winning projects span across the United States and abroad. JSE is centrally located in Indianapolis, with satellite offices in Columbus (Indiana), Chicago, Southern Florida, and Montreal, Canada.

Visit our Contact page for more information.


JSE not only believes in providing exceptional service to clients, but we also ensure our employees receive the best benefits, work/life balance, and interdepartmental mentorship. We encourage growth and continuing education for our engineers and technicians. 

To learn more about our open positions, please visit our Careers page.


We are currently providing services to state and local governmental agencies, consultants, and contractors in the following areas:

  • Design-Build
  • Bridge Design
  • Road Design
  • Construction Inspection
  • County Bridge Inspection
  • Bridge Replacements
  • Bridge Rehabilitation
  • Value Engineering & Re-Designs
  • Consultant Independent Peer Reviews

Notable Current Projects

North Split

I-65 / I-70 North Split (Indianapolis, IN)

I-69 Sec 6

I-69 Section 6, Contract 5 (Indianapolis, IN)

I-66 2021

I-66 Express Lanes P3 (Prince William Co./Fairfax Co., VA)

I-395 a

I-395 P3 Independent Design Check (Miami, FL)


Florida International University, FIU (Sweetwater, FL)

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