Jon Searles' photos with the keyword: tubular

This is one of my favorite bridges in Prague. It's actually a Metro bridge that links Hurka and Luziny, both of them in the vicinity of the larger Sidliste Nove Butovice.

Here's a better shot of the tubular bridge for the Metro at Cerny Most. This is one of a few such bridges on Line B. This one runs from Cerny Most to Rajska Zahrada, and the other one runs from Luziny to Hurka. This one is in better condition, although both are heavily vandalised.

In addition to being Metro connected, even more amazingly Cerny Most has some provisions for pedestrians and cyclists, although not nearly enough. The top of the tubular bridge is reserved for pedestrians, although I don't know if bikes are technically allowed on it. I saw some cyclists on it, though, and in any case the other facilities are so bad you won't see many pedestrians in Cerny Most except in the old Sidliste, so the safety hazard would be minimal.