wall before the bleachers were added. Center field was much closer than it became later when the center field area was extended over the sunken railroad tracks. The field was surrounded by a quarter-mile [] bicycle track which was wide. The bicycle track was upgraded in October 1890. During the 1891 baseball season, the Phillies welcomed fans to ride their bicycles to games, check and lock their cycles at the park, and then to use the bicycle track at the end of the game. Following the 1893 season, the Reading Railroad constructed a railroad tunnel under the intersection of Broad Street and Lehigh Avenue and the ballpark's centerfield, creating the ballpark's distinctive outfield "hump", and elevating the street level along the outfield fences. (This tunnel continues in use today by SEPTA Regional Rail's Main Line.) To prevent fans from viewing the games over the right field wall along the now higher Broad Street, the Phillies constructed the high fence prior to the 1894 season. Fire would destroy the grandstand and bleachers of the original stadium on August 6, 1894. The $80,000 in damage (equal to $ today) was covered fully by insurance. The fire also spread to the adjoining properties, causing an additional $20,000 in damage, equal to $ today. While the Phillies were playing a short road trip and then staging six home games at the University of Pennsylvania Grounds at 37th and Spruce, a building crew worked around the clock to erect temporary bleachers. The makeshift stands were finished in time for the game on August 18. 1895 reconstruction and expansion During the 1894–95 off-season, the park was fully rebuilt, seated 18,800, and was dedicated on May 2, 1895. The Phillies' National League Park was the first ballpark to be constructed primarily of steel and brick to prevent future fires. The ballpark had outer brick walls on all four sides, three wide steel stairways between decks, and a series of fifteen 30-foot heavy iron girders supporting the platforms and roof of the upper deck. The upper deck was made possible by the use of the cantilever system. Cantilever design was a new architectural technique in stadium construction in 1894, and National League Park was the first to be constructed with it. The ballpark's cantilevered concrete supports eliminated the need for many of the support columns in the pavilion that had made for “obstructed view seating” in the original