That's a great question, and one that city maintenance crews think about a lot. The good news is, for truly modular urban trash cans, replacing parts like hinges or lids is specifically designed to be straightforward and not difficult at all. The core idea behind modular design is ease of maintenance and longevity.
Unlike a single, welded-together unit, a modular trash can is built from separate components. The hinge is typically a separate piece that attaches to both the lid and the main body with bolts or specialized pins. If a hinge breaks, a maintenance worker usually just needs a simple tool (like an Allen key or wrench) to remove the old one and bolt a new, identical hinge in its place. No welding or specialized skills are required.
The same principle applies to lids. They are made as a standard, interchangeable part. If a lid is damaged, it's simply unbolted from the hinge points and a new lid is attached. This process often takes just a few minutes, getting the bin back in service quickly instead of having to replace the entire expensive unit.
So, is it difficult? Generally, no. The main challenges aren't technical but logistical: ensuring the city or contractor has the correct spare parts in inventory and that the design uses common, durable fasteners. The beauty of modularity is that it turns a major repair into a simple swap, saving time and money while keeping our public spaces clean and functional.