There are many tales about it's past. Its geological formation, which involved an ancient waterfall, is quite different from the more common ridge top arches. Swift Creek, whose waters flow under the arch, was used during the lumbering days to float thousands of logs down to the Red River.

Rock Bridge was dynamited once, but fortunately, the blast failed to destroy the span. For years it was believed that the attempted destruction was done by lumbermen because it hindered and sometimes blocked the flow of logs during high water periods. It is now generally believed that the lumbermen did not do the dynamiting, for they possessed more than enough skill in explosive techniques to blow the bridge to smithereens. Furthermore, even in very high water, there is still sufficient space to permit a steady flow of logs under the span without their getting hung up on the bridge.

Then, there are legends about feuds between the early settlers over boundary rights during the time that lumbering firms began buying up timber rights. Quite possibly a disappointed land claimant attempted to blow up the bridge as revenge.

Another story I have heard, from people still living in the region, is that an old, witch-like lady, living somewhere in the area of where the pavement ends, presently, on Calaboose Ridge Road, did the dynamiting. As the story goes, in her quest to find the lost Swift, silver mines, she would hire young people in the area to help her do her searching. As a result of these searches, she became convinced that the lost silver mines were there, in, around or under, Rock Bridge. Supposedly, as a result of that conviction, she attempted to blow Rock Bridge away.

I guess no one is absolutely sure who made the attempt, but Rock Bridge has served as a natural crossing point for centuries.

Indian petroglyphs, now long gone, were once visible on the arch, indicating that aboriginal Indians used the bridge thousands of years ago, to cross Swift Camp Creek. Early white settlers also used Rock Bridge.