IH 635 LBJ Express

IH 635 LBJ Express

ENR Announces 2016 Global Best Project Winners - LBJ Express for Best Road/Highway Read more

Woodrow Wilson Bridge

Woodrow Wilson Bridge

JSE was hired by the Contractor to provide construction engineering services on both....Read more

I-65 Boone County

I-65 Boone County

This project involved 8.1 miles of added travel lanes on I-65 from I-865 to...Read more

I-88 Over Fox River

I-88 Over Fox River

JSE provided design plans and calculations for construction of the....Read more

Capital House

Capital House

This tower comprises of 22 floors, offering 332 one and two bedroom apartments. Also includes...Read more

Welcome to

Janssen & Spaans Engineering, Inc.

Janssen & Spaans Engineering, Inc. (JSE) is a growing Transportation Engineering Firm in the states and abroad. Our team of professional's understand the importance of value engineering and award winning designs. Here at JSE you will find a description of our featured projects that showcase the talents of our professional staff. Browse and discover all that JSE has to offer the transportation community. 

Latest News

ENR 2016 Best Road/Highway Project....Read more
Survey Crew Chief....Read more
2013 Top 10 Bridge Award #1....Read more
Roads & Bridges - Top 10 Bridges....Read more
US Route 460 Connector Bridge....Read more
ISO 9001....Read more

What We Do

What We Do

Job Opportunities

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SpaanSpan Brochure