According to this website the bridge appears in the background to one scene in the movie "Picnic".
http://www.georgeduning.com/soundtracks/Picnic/Picnic_Filmin...
There is another image of the bridge to be found here.
The classic movie Picnic was filmed in this park. Anyone remember whether the bridge is in the movie?
One link further shows the bridge in stills from the movie.
http://www.georgeduning.com/soundtracks/Picnic/Picnic_Filmin...
A very noteworthy bridge.