10/10/2026
Traffic moves above the bridge. The electricity-generating opportunity sits underneath it. Germany has installed wind turbines below motorway overpasses, using vehicle slipstreams and airflow constriction to power bridge lighting without a grid connection. π¨
What makes the design interesting is how closely the source and the use are connected. The structure carries vehicles, the air around it moves, and the turbines help supply lighting for the same piece of infrastructure. An overlooked space beneath a road becomes part of the energy system.
That is a useful way to think about infrastructure upgrades: look at what a place already does, then consider whether its unused space can support another job. Here, the story is visible in a familiar setting. A bridge can carry traffic while small machines below it help keep the structure illuminated.