The above map shows where the bridge is located.
Click here for a large 500kb JPEG photo of a map of the park that is around this bridge.
Although the map does not show it, you can walk across the locks from Canal Street to get to the island south of the one Canal Street is on. From there you can get addition views of the swing bridge in addition to those you will find on the island that Canal Street is on. See the park map for more details.