Western Pennsylvania · Since 1983
Multi-disciplinary consulting engineering
Bridges, roadways, construction management, and facility design — proven engineering and project management for public-sector clients across Western Pennsylvania.
- 40+
- Years in operation
- MBE
- Certified Minority Business Enterprise
- 3
- Practice areas
- PA
- Licensed engineers & surveyors
About the firm
Proven engineering and project management — since 1983
Tri-State Design and Development, Inc. is a multi-disciplinary consulting engineering firm based in Western Pennsylvania. Our leadership team is skilled in broad-base design, supervision, project management, construction management and inspection, and administration — overseeing every project from field survey through final closeout.
Our in-house staff includes experienced managers, registered professional engineers and surveyors, construction inspectors, and CADD designers. We're well recognised for our work on public projects and buildings throughout Western Pennsylvania.
More about us- Certified Minority Business Enterprise (MBE)
- Registered Professional Engineers & Surveyors
- PennDOT-experienced design teams
- In-house Construction Inspectors & CADD Designers
A comprehensive line of services
What we do
Our in-house staff — registered professional engineers and surveyors, construction inspectors, and CADD designers — covers projects end to end, across three practice areas.
Construction Management & Inspection
Owner's representation, scheduling, cost control, and on-site inspection from notice to proceed through closeout.
Learn moreTransportation Design — Bridges & Roadways
Bridge and roadway design, rehabilitation, and project management for PennDOT, municipal, and public-sector clients.
Learn moreFacility Projects
Architectural and engineering services for public buildings, facility upgrades, and ADA compliance work.
Learn moreFeatured project
I-79 Meadowlands Interchange Improvement
Tri-State Design's contribution to the award-winning I-79 Meadowlands Interchange Improvement Project — voted Roads & Bridges' 6th Best Road Project of 2013 and ESWP's 2013 Transportation Project of the Year.
- Roads & Bridges — 6th Best Road Project of 2013
- ESWP — 2013 Transportation Project of the Year
Have a project on the boards?
Talk to us about transportation design, construction management, or facility work — we'll respond within one business day.