lighthouse connecticut united_states southwest end near connecticut north west end west mile south entrance mile southwest completed constructed light feet tall courses stories measures feet diameter replaced originally light fifth order lens fourth order lens installed months operation currently use alternating white red flash seconds light added national_register_of_historic_places design 1890s lighthouse formally proposed mark united_states congress appropriated establishment light fog signal contracted construct foundation superstructure design type lighthouse realized major foundation form identical curved iron plates inward pointing secured knees assembled rings lowered water filled concrete stone concrete series photographs work shows assembly lower courses wilson point lowering cylinder light fall prior deposit protective foot tall completed serves typical example lighthouse located feet water foundation support deck lighthouse built includes cavity lighthouse brick basement story structure lighthouse assembled courses curved iron plates interior lined brick strengthen tower anchorage winding cast iron stairs rise periphery story writes historian plain features underwent period development second phase describes support gallery covered deck having simplified classical detailing window enclosed shallower cast iron surrounds deck light story original cast iron decks able seen atop cast iron door lighthouse faces south time nomination windows sealed floor lighthouse serves kitchen second level rooms split partition smaller room bathroom level divided description survey fourth floor windows removed cast iron floor brick wall exposed lighthouse measures feet diameter active discontinued service originally light fifth order lens fourth order lens installed months operation light characteristic fixed white light red flash seconds light automated lens replaced modern light continues serve active aid navigation installed current lens installed current light characteristic alternating white red flash seconds white red flashes seen nautical miles nautical miles service tower began tilt keepers moved furniture tower problem reported exacerbated following new england hurricane importance light added national_register_of_historic_places listed significant typical example pre fabricated cast iron conical cast iron tubular foundation lighthouse served source inspiration artist years swimmers competing annually swim race mile race lighthouse section list keepers list includes known keepers assistants non officers
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