Mt. Adams Retaining Wall

Mt. Adams experienced a series of landslides during construction of I-471 which required, aside from the demolition of dozens of hillside buildings, a complete redesign of the hill's planned retaining walls. The post-tensioned retaining wall pictured here was not originally planned, and its design and construction delayed completion of I-471 by nearly a decade.

These photos were sent to me by an individual who asked to remain anonymous. I do not have any detailed information regarding the wall's construction or its maintenance. Please do not email me with questions about the wall -- I do not have the answers and do not know where to direct you to find them.

Close-up of pilings