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The Leighton Difference
60 Years: A Strong Foundation
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Transportation
I-215 Placentia Avenue Interchange
I-5 Segment 2
SR-55 Widening
Del Mar Bluffs
Perris Valley Line
North Atwater Crossing
Metro L Line Eastside Extension
I-15 / Base Line Avenue Interchange
Adams Bridge
Kraemer Avenue Grade Separation
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About
The Leighton Difference
60 Years: A Strong Foundation
Awards & Accolades
Expertise
Environmental Consulting
Geotechnical Consulting
Testing & Inspection
In House Laboratories
Projects
Commercial & Industrial
Community Development
Education & Institutions
Public Buildings & Infrastructure
Transportation
Water & Wastewater
People
Culture & Leadership
Equality & Inclusion
Life @ Leighton
Join the Leighton Team
Resources
Contact Us
Careers