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.
Traffic Engineering and Traffic Impact Studies.
Yuma, AZ

Trusted. Timeless.

Professional Engineering and Municipal Engineering.
Scotch Plains, NJ

Civil Engineering and Commercial, Residential & Institutional Site Development.
Santa Barbara, CA

Ensuring Quality by Design
Pawtucket, RI

A Better Approach to Civil Engineering
Harrisburg, PA

Build More Than Infrastructure
Lehi, UT+8

Integrated Transportation Systems
Pleasanton, CA+2

Delivering High Quality, Efficient Transportation Solutions
New Cumberland, PA+6
Practical Solutions. Designed to Last.
Tualatin, OR

Engineering for a World in Motion
Punta Gorda, FL+3

Best-In-Class Engineering Expertise
Pleasanton, CA

Ingenuity, Integrity, and Intelligence.

Engineering the Extra Mile
Marietta, GA+2

Where Innovation Meets Sustainable Impact
Saint Paul, MN+4

A Company Built on Experience & Relationships
Manhattan, KS+3

Loyal. Trusted. Genuine.
Ormond Beach, FL+1
Safety focused. Mobility Driven.
Orlando, FL
Civil engineering, transportation, land development, and facilities consulting
Pittsburgh, PA+3
Cleveland's Premier Engineering & Surveying Firm Since 1969
Strongsville, OH

We Are the Community That Builds Communities
Rochester, NY+7
Public Infrastructure and Roadway design.

Nationally recognized. Locally preferred.
Greenwood Village, CO+15