
OLH Inc.
Trusted solutions for engineering and construction
Augusta, GA+3
Explore capabilities, project experience, and office locations to build your shortlist.

Trusted solutions for engineering and construction
Augusta, GA+3

Groundbreaking by Design
Louisville, KY+8

Professional Engineering & Surveying with Common Sense
Idaho Falls, ID+1

Powering our future through partnerships, principles, and passion.
King of Prussia, PA
Creating a Better Water Future

Planning and Transportation Engineering.
Randolph, VT+11

Premier Engineering Design, Construction Support, and Maintenance Services
Hudson, OH

Innovative and sustainable design in civil engineering and architecture

Transportation Driven. Client Focused.
Pittsburgh, PA+3

Civil Site Design and Drinking Water Engineering.
Lacey, WA

Engineering, Smarter, Stronger Communities
Bakersfield, CA+7

Structural Engineering and Concrete Structures.
Encino, CA

Deep expertise. Focused solutions.
Boston, MA

Specializing in waterfront project design and consulting
Fort Myers, FL
Architecture and Civil Engineering.
Grand Rapids, MI+5

Construction Inspection and Coatings Inspection.
Cleveland, OH
Committed to Excellence From Concept to Completion
St. Louis, MO+2

Stronger by Design.

Making Strides in Modern Engineering
Boise, ID

Providing value and quality in everything we do
Kansas City+1
Expert Construction Management and Program Oversight
Washington, DC

Solving complex MEP/FP engineering challenges since 1961.
Woburn, MA

Construction Engineering and Inspection and Resident engineering.
Norman, OK+3

Civil Engineering/Site Design and Structural Design.
Franklin, TN