David Evans and Associates Inc.

David Evans and Associates Inc.
David Evans and Associates Inc.

2100 SW River Parkway

Portland, OR 97201

(800) 721-1916 / (503) 223-2701



Our experience in transportation spans more than 30 years. From bike trails to light rail to airports, transportation projects rarely begin with a clean slate. Our award-winning transportation experts draw upon our integrated technical specialists to balance the competing demands posed by complex transportation problems and design environmentally sensitive solutions that meet the needs of all people who have a stake in the project outcome.


DEA’s bridge engineers take a bird’s eye view of site opportunities and constraints, community concerns, and design and construction issues before beginning the design process.  Learn More ~

Freight Rail

DEA’s rail engineers and planners are specialists in freight rail design, planning, engineering, survey, and construction oversight. Learn More ~


DEA’s award-winning civil and transportation engineers draw on the firm’s integrated technical specialties to meet the needs of their clients and communities. Learn More ~


DEA’s transportation planners provide public and private clients with project management, planning, and public involvement services. Learn More ~


DEA’s seasoned project leaders meet the challenge of complex transit planning projects by providing the full range of planning, conceptual design, environmental and public involvement skills. Learn More ~