 There is no exit 3 on the Northway section of I @-@ 87 , as this number was reserved for an interchange with the cancelled I @-@ 687 . A project to improve access to the Albany International Airport at exit 4 is currently underway . The two old bridges at exit 4 that carry 102 @,@ 000 vehicles a day are deteriorating and subsequently are being replaced . Once the new replacement bridges are built , the old bridges will be demolished . Construction began in February 2015 and is expected to be completed by October 31 , 2015 . 
