West Tisbury businesses, from a gas station to farm stand vendors, fear that the partial closure of South Road and prominent detour signs spurred by President Obama’s visit will hurt sales during one of the busiest weeks of the year.

President Obama arrived for a nine-day visit on Martha’s Vineyard last Saturday. The first family is staying at a private home off South Road in Chilmark. Because of security concerns, South Road is closed between Meeting House Road and Wooton Bassett Road until August 18.

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