The IND was built with longer platforms than those of the IRT or BMT. Initial plans called for stations to be built with long platforms to accommodate trains of eleven cars. However, these lengths were shortened, as stations on the IND Eighth Avenue Line between 72nd Street and 163rd Street – Amsterdam Avenue have lengths of exactly . There were two exceptions: 96th Street was on both levels, as that was the standard length of platforms built for the IND after the 1940s. The 81st Street–Museum of Natural History station had an uptown platform that was long, and a downtown platform that was . Platforms of exactly length can also be found on the IND Queens Boulevard Line between Elmhurst Avenue and 67th Avenue.