Column holding up I-280 above the 16th Street grade crossing, San Francisco. A piece of civil engineering jargon that is apparently more obscure than I realized: those vertical columns that hold up bridges are called bents. Really.

Shot with the Nikon D70s and the 18-70mm f/3.5-4.5 zoom at 40mm, ISO 400, f/4.5, shutter 1/125 sec. White balance, exposure, contrast, saturation, levels, highlights, and color adjustments in Aperture.