Rules of engagement for the Big Four.

I agree that skateboards and rollerblades can only detract from a cyclist's primary imperative, after dodging oblivious drivers: Avoiding fellow cyclists who insist piloting their bikes as thought they were skateboards.

Plan to walk, bike, run, but not skate over Louisville's Big Four Bridge, by Sheldon S. Shafer (Courier-Journal)

Runners and walkers are welcome; cyclists, too. You can even bring your dog, as long as you use a leash.

But if you’re a skateboarder or rollerblader, don’t plan on using the Big Four Bridge cross-river skywalk once it opens in December — the rules likely won’t allow it.