Allan Sekula, Gas Terminal, Barcelona (2008) from the series "Methane for all."
When an American crew picked up the first of these ships from the Daewoo dockyard, completed the sea trials, and began the voyage back across the Pacific, they discovered in the nooks and crannies of the new ship a curious inventory of discarded tools used in the building of the vessel: crude hammers made by welding a heavy bolt onto the end of a length of pipe, wrenches cut roughly by torch from scraps of deck plate. Awed by this evidence of an improvisatory iron-age approach to ship building, which corresponded to their earlier impression of the often-lethal brutality of Korean industrial methods, they gathered the tools into a small display in the crew's lounge, christening it "The Korean Workers' Museum."
If we lift up the manhole cover, lock-out the equipment, unscrew the housing, and break the word into components, infrastructure means, simply, below-structure. Like infrared, the below-red energy just outside of the reddish portion of the visible light section of the electromagnetic spectrum. Humans are not equipped to see infrared with our evolved eyes, but we sometimes feel it as radiated heat.
Infrastructure is drastically important to our way of life, and largely kept out of sight. It is the underground, the conduited, the containerized, the concreted, the shielded, the buried, the built up, the broadcast, the palletized, the addressed, the routed. It is the underneath, the chassis, the network, the hidden system, the combine, the conspiracy. There is something of a paranoiac, occult quality to it. James Tilly Matthews, one of the first documented cases of what we now call schizophrenia, spoke of a thematic style of hallucination described by many suffering from the condition, always rewritten in the technological language of the era. In Matthews' 18th Century description, there existed an invisible "air loom," an influencing machine harnessing rays, magnets, and gases, run by a secret cabal, able to control people for nefarious motives. Infrastructure's power, combined with its lack of visibility, is the stuff of our society's physical unconscious.