The Big Rock Bridge is a regional trail bridge that spans the Big Rock Creek just west of Chicago, Illinois. The bridge is located in Big Rock Creek Forest Preserve about 3 miles south west of the Aurora Municipal Airport. The park is a former rock quarry that was abandoned and later filled with water following a local flood. It has since been stocked with fish and is a popular fishing hole. Big Rock Creek is one of the highest quality streams in the northeast section of Illinois, but development is putting pressure on the watershed area. As a result, preserving some green space along the stream is critical for the future health of Big Rock Creek.

The bridge was built in the mid-2000s by Sahale, LLC, based out of Seattle, Washington. Sahale specializes in cable bridges, including cable stay structures. The project was developed and designed by Teng, an engineering and architecture firm from Chicago. These photos were provided by John Ritchie, the structural engineer for the project.