Alliant Engineering, Inc.
Civil Engineering and Transportation Planning & Design.
Explore capabilities, project experience, and office locations to build your shortlist.
Civil Engineering and Transportation Planning & Design.

Expert Transportation Engineering & Construction Management Services
Gaithersburg, MD
Safety focused. Mobility Driven.
Orlando, FL

Serving. Leading. Solving.™
Houston, TX+1

Engineering a Better Tomorrow
Chicago, IL

Where Commitment and Action Meet
Jacksonville, FL

Engineering for a World in Motion
Punta Gorda, FL+3
Consulting Engineers Since 1915
Bloomfield Hills, MI+2

We build for the benefit of all
New York, NY+1

Traffic Operations and Technology-Related Transportation Solutions
Denver, CO

Proven Track Record
Diamond Bar, CA+2

Trusted Infrastructure Services for Aviation, Transportation, and Water
Chicago, IL
Traffic Engineering and Traffic Signal Design.

The Transportation Solution Experts
Portland, OR

Better Communities, by Design

Lean into the future with us.
Orlando, FL+4

High-Quality Engineering Services for the New York Metropolitan Area and New Jersey
New York, NY+3
Construction Engineering and Inspection (CEI) and Materials Testing.
Detroit, MI+3

Partnering in Solutions that Work for You

Engineering & Passion

Construction Management, Resident Engineering, and Construction Inspection and Construction Management.
Lynbrook, NY+1
Designing Infrastructure, Redefining Horizons
Houston, TX+1