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. U.S. Highway 61, named Missouri Street in West Memphis, was constructed at the same time and its juncture with Highway 70 would become the epicenter of downtown West Memphis.