 In September 1918, the New York City Board of Estimate approved plans for Cross Bay Boulevard.A $2.9 million bid for the boulevard's construction was received in October 1921.Work involved the paving of Cross Bay Boulevard with concrete and asphalt; widening the thruway from 50 feet to ; and connecting the Rockaway, Broad Channel, and mainland portions as part of what was described as "the largest vehicular trestle in the world".