


Left to right: John Sanders, P.E., Matt Christensen, P.E., S.E., and Hans Erickson, P.E., S.E.
TKDA is pleased to announce the promotion of three long-time staff from our 11-member Bridge Group. John Sanders, Matthew Christensen, and Hans Erickson have been promoted to Senior Registered Engineer. The Bridge Group provides design services for a wide range of structures, including highway, pedestrian, and railroad bridges. TKDA leadership selected these individuals based on their exemplary skills and outstanding job performance. Together they have completed hundreds of bridge projects across the United States.
Mr. Sanders joined TKDA in 1988 and has served as a Project Manager and lead Design Engineer for BNSF Railway Company bridge rehabilitations and bridge rebuilds at more than 295 sites in 16 states. His current projects include multiple rail bridge replacements and rehabilitations across the BNSF system.
Mr. Christensen has over 12 years of experience in structural analysis, design, and plan preparation for bridge structures, as well as specialty structures. His bridge design experience covers most types of highway, pedestrian, and railroad bridges. Areas of special expertise are seismic design and the design of post-tensioned concrete bridge structures.
Mr. Erickson has over 11 years of experience in structural analysis, design, and plan preparation for bridge structures, as well as specialty structures. His bridge design experience covers most types of highway, pedestrian, and railroad bridges. Areas of special expertise are the design of steel plate girder bridges (straight and curved), and the design of fatigue-resistant details. He is also certified as a Team Leader for bridge safety inspections in the State of Minnesota.
Both Mr. Christensen and Mr. Erickson have been key team members in a number of high-profile, fast-track design-build projects, such as the I-35W St. Anthony Falls Bridge, TH 13 and CR 101 Interchange in Savage, Elk Run Interchange near Rochester, and TH 169/494 Interchange in Eden Prairie.












