This 3 bay ACF Center Flow? covered hopper has elongated hatches and is painted gray with black lettering. This car was built by AC&F in July of 1980 to transport intermediate weight dry bulk loadings and runs on black Barber? roller bearing trucks. A part of Union Pacific since its acquisition in September of 1996, Southern Pacific had over 11,000 miles of railway from Chicago, South to New Orleans, and west to San Francisco and Portland, OR.