I like to imagine that everyone in San Francisco enjoys the loop-de-loop overpass in to the United maintenance facility at SFO as much as I do. Perhaps the attraction simply that it is industrial echo of Robert Smithson's Spiral Jetty project on the Great Salt Lake in Utah.

The maintenance facility itself predates Spiral Jetty by at least a decade but I haven't tracked down the exact date when the overpass was added so maybe it's always been a shout-out to Smithson's work. In a similar vein to the last post here are some things I made not so much about the overpass but with it.