Bridge carrying the tracks over Cesar Chavez Blvd, San Francisco, looking north towards the south portal of Caltrain tunnel #2.

Shot with the Nikon D70s and the 18-70mm f/3.5-4.5 zoom at 70mm, ISO 400, f/7.1, shutter 1/1250 sec. Cropping, exposure, contrast, saturation, levels, highlights, and shadows adjustments in Aperture.