Pittsburgh isn’t alone in being home to bridges on the verge of collapsing. This year marks the 200th anniversary of London’s Hammersmith Bridge, which has been closed to vehicular traffic for five years after cracks threatening the stability of the bridge were discovered. The bridge was temporarily closed to pedestrians and cyclists crossing over and river traffic crossing under, but those restrictions have been lifted. Except cyclists are required to dismount and walk across. (Transport for London: Hammersmith Bridge) Work is slowly being done on the bridge, but there is no estimate for when it will be fully functional again. Part of the delay appears due to the decentralization of bridge ownership in London that puts the burden of costly bridge maintenance and repairs on local councils that don’t have sufficient funds (The Standard, July 5, 2023). Much as I enjoy walking across bridges, I would have second thoughts about walking one where the vibrations caused by a cyclist might increase the damage to the bridge.