At the Intersection of Innovation and Proven Expertise
For over 30 years, PSI has delivered smart, sustainable transportation solutions across the Mid-Atlantic. From civil infrastructure and advanced traffic engineering to AI-powered software, we lead with technology and trust to shape the future of transportation.
Explore PSI’s latest project showcasing technology-driven solutions to complex infrastructure challenges.
Your Challenge,
Our Commitment
At PSI, your vision drives our work. Our multi-disciplinary team of engineers, planners, researchers, and software developers is strengthened by our most important team member: you. Together, we define a shared vision to deliver groundbreaking solutions tailored specifically to your community’s needs.
Proven Experience
For over 30 years, PSI has earned trust through award-winning design, unmatched expertise, and a consistent record of delivering outstanding results.
Driven by Innovation
Forward-thinking and tech-driven, PSI delivers smart, sustainable solutions with safety and efficiency built in.
Our Services
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Roadway Design
Designing safer, smarter, and more efficient roadways, streetscapes, and traffic systems to improve mobility and quality of life.
Transportation Planning
Shaping resilient transportation networks through integrated traffic modeling, urban planning, and livability-focused solutions.
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Traffic Engineering
Optimizing transportation performance through data-driven analysis, advanced signal technology, and strategic safety enhancements.
Asset Management
Proactive inventory, condition assessment and management of critical infrastructure assets for pavement, signage, ADA compliance, and curbside—leveraging data to inform maintenance and capital investments.
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Subsurface Utility Engineering (SUE)
Utility investigations, conflict analysis, and mapping to enhance project accuracy, mitigate risks, and streamline project delivery.
Construction Management and Inspection
Comprehensive onsite inspections, material testing, and schedule oversight to ensure quality, compliance, and efficient project execution.
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Projects That Define Progress
Discover how PSI’s innovative solutions are shaping smarter, safer, and more connected communities.
11th Street NW Bus Priority Project | Transit, Bike & Pedestrian Improvements in Washington, DC
Embassy Row Streetscape Design in Washington, DC | Massachusetts Avenue NW Roadway Rehabilitation
14th Street NW Streetscape & Safety Improvements | Corridor Rehabilitation from Thomas Circle to Florida Avenue
"PSI’s professional expertise and artistic handling of public outreach ensured a smooth progress, and the project schedule was shortened by 40%. PSI’s performance in every critical element of the project has made the project very successful, and the tasks were handled very professionally and expeditiously."
Ready to Transform Your Community?
We’re passionate about building smart, resilient communities through innovation and expertise. Let’s discuss how PSI can tailor solutions for your community’s unique transportation challenges.
Build Your Career at PSI
Join a team committed to innovation, excellence, and community impact. We’re always looking for passionate professionals who want to make a difference.
Grow With Us
Expand your expertise and advance your career in a dynamic, collaborative environment.
Be a Changemaker
Contribute directly to projects shaping safer, more sustainable communities.
Explore Career Opportunities
