Boston and Cambridge MARCH Bid Results Announced Posted on March 13, 2019 Click the link below to see the successful bidders in the most recent Boston (#193889) and Cambridge (#193738) City Carrier vacancy posting’s which closed on March 6, 2019. Posting 193889 City Carrier Cambridge Posting 193738 City Carrier Senior/successful bidders will assume new assignments effective Saturday, March 30, 2019.