The avenue was paved in the 1890s as a grand
parkway resembling
Manhattan's Fourth Avenue, which was later rebuilt and renamed to Park Avenue. The Fourth Avenue in Brooklyn was rebuilt after 1910 to accommodate more traffic. On October 25, 1962, Mayor
Robert F. Wagner Jr. requested that the
New York City Board of Estimate approve an expenditure of $724,572 for the reconstruction of subway structures and entrances along the
Fourth Avenue subway line in order to accommodate the widening of Fourth Avenue between 60th Street and Atlantic Avenue, which was to be accomplished by narrowing the street's sidewalks. At the time of the request, 80% of the work on the project was completed. Work had started on the project, which cost $1 million, several months earlier. The contract that the Mayor had requested approval for would have relocated vault lights, gratings, entrances and exits at 56th Street and 49th Street, and at the 45th Street, 53rd Street and 59th Street stations. Protected
bike lanes, separated from vehicular traffic by a lane of parking, were proposed for Fourth Avenue in 2017 in an attempt to improve
cycling infrastructure in New York City. The first bike lanes were added between 60th and 64th Streets within Sunset Park in 2018, followed by the section between 1st and 15th Streets in Park Slope in early 2019. Due to ongoing reconstruction work on the Fourth Avenue subway tunnel, the section between 60th and 38th Streets could not receive bike lanes until the reconstruction was completed. In August 2019, following several cyclist deaths citywide, the
NYCDOT announced that the remainder of Fourth Avenue between 38th and 60th Streets would receive protected bike lanes by late 2020. ==Churches==