It's been featured in a number of movies, including:
* The Notebook (2004): While not actually filmed on the Ravenel Bridge, the movie used computer-generated imagery to create a fictional bridge that closely resembles the Ravenel Bridge for a scene where Noah and Allie drive across it.
* The Patriot (2000): The Ravenel Bridge appears in a few scenes during the film's climax.
* The Prince of Tides (1991): The bridge features in a few shots during the film's opening scene.
It's possible that other movies have also featured the Ravenel Bridge, so if you have any more details about the movie you're thinking of, I might be able to help you pinpoint it.