Utility Tunnel Upgrades

Client: Boeing

Civil engineering for phased upgrades to the Boeing Everett facility’s steam system. This included approximately 2,200-LF of buried 8-ft by 8-ft concrete box culvert tunnel along with vaults and portions of surface utilidor to house future utilities including steam, domestic water, fire, condensate, industrial waste, and other dry utilities. Design also included utility relocations, and asphalt and concrete pavement design.