firm profile principalscommunity involvement newsawards LIGHTHOUSE AND GATEWAY CONSTRUCTION COMPLETE! The Port of Kennewick began construction on Phase 1 of the Shoreline Restoration Project in 2009. This phase involved construction of a 63 foot wide, 26 foot tall Gateway feature that now welcomes v...

firm profile principalscommunity involvementnewsawards HDJ Design Group has maintained a thirty-year community involvement commitment within the Oregon/Washington community and encourages all the firm's employees to make positive impacts and donations of their time and resources. It has been the goa...

firm profile principalscommunity involvement newsawards Principals, HDJ Design Group From left to right: Tim Bretz, P.E. Tom Dennis, P.E. Greg Jellison, P.E. Brian Hopper, P.E., Principal Emeritus (not pictured) Jason L. Mattox, P.E., Associate Principal Tim Bretz, P.E. home | services | markets | c...

firm profile principalscommunity involvement newsawards JASON L. MATTOX, P.E. Associate Principal Jason Mattox has recently re-joined HDJ as an associate principal, and will be primarily responsible for managing design services for residential and commercial projects. Jason brings over 9 years of ci...

firm profile principalscommunity involvement newsawards TIM G. BRETZ, P.E. Principal, Operations Timothy G. Bretz, P.E., has recently joined HDJ Design Group as the firms third principal. Tim fills the vacancy created by Brian Hoppers retirement. Tim will serve as an Operations Principal at HDJ and ...