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Bridges for pedestrians are far lighter construction than bridges for cars and trucks.
by WalterBright 1y ago
Bridges for pedestrians are far lighter construction than bridges for cars and trucks.
- xeonmc 1y agoPedestrians are also far lighter than cars and trucks, and slightly lighter than deers.
- manwe150 1y agoPedestrians also happen to be much denser than cars though, since cars are mostly air, while humans are mostly water, which can lead to some interesting situations (and Wikipedia articles)
- WalterBright 1y agoMy dad worked for a while as an accident investigator for the Air Force. One time there was a crash where a pilot deliberately flew into a cliff at top speed. The only evidence they ever found of his body was a finger joint. My dad said the body just turns into spray at those speeds.
- duskwuff 1y agoTypical pedestrian bridges aren't 150 feet wide, though. Nor do most have grass growing on them (at least, not intentionally). This is, in fact, a fairly unusual infrastructure project.
- ultrarunner 1y agoI'd imagine that once you're 150 ft wide the potential for several vehicles driving across or parking has to be considered.
- duskwuff 1y agoQuite possibly. Although I'm not sure that's even significant compared to the increase in weight when it rains, waterlogging the soil on the bridge.
- WalterBright 1y agoI'd make the bridge bed porous.
- WalterBright 1y agoEasy to make it impassable for vehicles.