When one begins to think about what is required to allow a massive number of vehicles to remain suspended or transported over an area, it quickly becomes incomprehensible. Add to that the requirement that the structure needs to continue to funciton in all conceivable weather over a long period of time and I am amazed that it is even possible.
This is from a series of images that that were taken under the bridges that move traffic in and out of Baltimore.
Meanderings, at best 