The Seattle Pine Street Tunnel Dec, 2006 By Bruce Erickson, P.E., S.E. In Feature This article is currently only available in PDF format, please click the link to the top right. About the author ⁄ Bruce Erickson, P.E., S.E.Bruce Erickson, PE, SE is a structural engineer with the Seattle office of KPFF Consulting Engineers. He can be contacted at Bruce.Erickson@kpff.com Prev Seismic Site Classification for Structural Engineers Next Concrete Diaphragm Walls… One Size Does Not Fit All