Check out these construction images:
New construction access ramp completed inside SR 99 bored tunnel
Image by WSDOT
In June 2015, crews working for Seattle Tunnel Partners completed a new construction access ramp inside the south entrance to the SR 99 bored tunnel. The ramp bridges the eight-foot drop between the level of the recently completed northbound roadway deck south of the entrance and the bottom level of the bored tunnel. The 400-foot-long ramp provides a gentle slope for crews moving equipment and materials into tunnel, including the vehicles that transport the curved, concrete tunnel segments. Learn more about the Alaskan Way Viaduct Replacement Program at www.alaskanwayviaduct.org or follow Bertha, the SR 99 tunneling machine, on Twitter @BerthaDigsSR99.
Lake Merritt BART station and BART headquarters building under construction (1973)
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Image by Eric Fischer
The interesting part, as far as I am concerned, is the BART train car mockup on display across the street, where the MTC headquarters building is now. I wonder if they still have it somewhere. Oh hey, here is a close-up of it there.
From Democracy in the Space Age: Regional Government under a California State Plan, 1973