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SW 124th Avenue Extension

SW 124th Avenue Extension

DEA led team provided planning, environmental, and engineering expertise to develop and screen alternatives for a new arterial road for Washington County from Tualatin-Sherwood Road to Tonquin Road, and east to connect with Grahams Ferry Road.

I-84 Graham Road Bridges

I-84 Graham Road Bridges

DEA provided designs to replace two aging Interstate 84 bridges for the Oregon Department of Transportation in Troutdale, Oregon.

Better Naito Improvement

Better Naito Improvement

DEA is providing project management and civil, structural, and traffic engineering services for the development of a two way cycle track through Portland from SW Harrison Street to the Steele Bridge.

US 6 Bridges Design-Build

US 6 Bridges Design-Build

Long considered one of the most hazardous stretches of highway in Colorado, the design-build project included more than $100 million in improvements to improve highway capacity, operations, and safety