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Trusted Construction Contractors in Los Angeles
Parthenon is a certified SBE and DBE firm with a proven track record in delivering large-scale infrastructure projects across Southern California. Our expertise spans transit systems, roadway construction, and complex urban development, supported by strategic partnerships with industry-leading contractors. We prioritize client satisfaction through rigorous project management, safety-focused practices, and a commitment to deploying highly qualified professionals.

With decades of collective experience, our team has earned recognition for excellence in construction management and general contracting. We maintain transparent communication with clients while adhering to strict compliance standards, ensuring every project meets technical specifications and community needs. Our repeat client base and participation in landmark projects underscore our reputation as a trusted construction partner.
Services
Construction Management Transit Systems Development Roadway Construction Infrastructure Upgrades Project Consulting
Highlights and features
  • Certified SBE/DBE contractor with major agency approvals
  • Proven success in Los Angeles' most complex infrastructure projects
  • Safety-first approach with zero workplace injury goals
  • Strategic partnerships with top-tier construction firms
  • Dedicated team of construction management professionals
Associations and certifications
  • SBE
  • DBE
  • CUCP
Services
Construction Management
We provide comprehensive construction management services, overseeing project timelines, budgets, and quality control. Our team coordinates with stakeholders to ensure compliance with technical specifications while maintaining safety standards. With experience in public infrastructure projects, we deliver solutions that meet both functional requirements and community needs.
Transit Systems Development
Specializing in transit infrastructure, we execute rail extensions and connectivity projects that improve regional mobility. Our work includes tunneling, station construction, and system integration for agencies like LACMTA. We focus on reducing congestion through efficient design and sustainable construction practices.
Roadway Construction
Our roadway construction services encompass bridge replacements, highway expansions, and urban street improvements. We implement traffic management plans to minimize disruptions while enhancing safety and capacity. Projects like the 6th Street Viaduct Replacement demonstrate our ability to deliver iconic infrastructure with community benefits.
Infrastructure Upgrades
We modernize critical infrastructure including utilities, drainage systems, and public spaces. Our approach balances technical requirements with environmental considerations, creating sustainable solutions that support long-term urban growth and resilience.
Project Consulting
Our consulting services offer expert guidance on project feasibility, risk assessment, and technical specifications. We support clients through planning, design review, and implementation phases to ensure successful project outcomes.
People
E. Trias
Principal
E. Trias brings decades of infrastructure project experience, specializing in transit systems and urban development. His leadership focuses on deploying qualified professionals while maintaining strict project execution standards.
Questions
What construction services does Parthenon Corporation offer?
We provide construction management, general contracting, and consulting services for transit systems, roadway projects, and infrastructure upgrades.
Are you certified as a minority-owned business?
Yes, we hold SBE, DBE, and CUCP certifications through relevant transportation agencies.
What major projects have you completed?
Our portfolio includes the Regional Connector Transit Corridor, Purple Line Extension, and 6th Street Viaduct Replacement projects in Los Angeles.
Do you work with other construction firms?
We collaborate with industry leaders like Skanska and Stacy & Witbeck on complex joint ventures.
What safety standards do you follow?
Our Health and Safety program aims for zero workplace injuries through rigorous compliance protocols.