was wide enough for the construction of a four track subway line without serious disruption of surface travel, with the area alongside the boulevard not built up in many places. More often than not in some places, billboards would be visible instead of buildings. During the construction of the line, electric utility service was temporarily provided by a wooden pole line. Once the construction of the line was completed, the utility service was underground, and the Queens Boulevard trolley line was replaced by bus service (today's ), in part due to competition with the newly constructed subway line. Because the construction of the Queens Boulevard Line utilized the cut-and-cover tunneling method, Queens Boulevard had to be torn up and in order to allow pedestrians to cross, temporary bridges were built over the trenches. Like other IND lines, many stations' mezzanines stretched the full length and width of their stations, and are now considered to be overbuilt. On October 16, 1930, James A. Burke, the chairman of the Hillside Avenue Subway Extension Committee stated that the extension of the line to Springfield Boulevard was a certainty after receiving a letter from the Transportation Commissioner. On December 1, 1930, the BOT announced that a station would be constructed at 178th Street and Hillside Avenue, but would be done under the section between 178th Street and Springfield Boulevard, which was to be constructed simultaneously with the section from 137th Street to 178th Street. This announcement was made in response to a request by the Jamaica Estates Association for a station at 178th Street. At the time, BOT engineers were completing the design for the extension to Springfield Boulevard and the BOT said that bids on its construction might be let in the near future. On December 23, 1930, the contract for the construction of the section between 137th Street and 178th Street, Route 108, Section 11, was let. On December 18, 1931, it was announced that the completion of the Queens Boulevard Line to Roosevelt Avenue was delayed until January 1, 1933. Previously, it has been announced that the line would open in 1931 or 1932. On January 18, 1933, Chairman of the Board of Transportation announced that work on the first section of the line would be completed by September. In addition, Delaney submitted the capital outlay program for the year, which called for the completion of the extension of the line