sentences:  Due to the rapid growth of the city that grew from thick forests and swamps earlier in the 20th century, West Memphis was nicknamed the "Wonder City" in the mid-1930s.The first automobiles began crossing the Mississippi River at Memphis in 1917 by special roadways constructed on the Harahan Bridge, which was built for rail traffic and opened in 1916.This heralded the growth of the future West Memphis as its main street, U.S. Highway 70, known as Broadway Avenue, brought an influx of automobile traffic through the area.