4 ms·
A lot of them are not maintainable - eg, there's no economical way to "fix" reinforced concrete with an incorrect blend or incorrect reinforcement.
by kyrieeschaton 6y ago
A lot of them are not maintainable - eg, there's no economical way to "fix" reinforced concrete with an incorrect blend or incorrect reinforcement.
- jbay808 6y agoIs the cost of demolishing and rebuilding it so much higher than building it from scratch?
- Kinrany 6y agoThe time spent rebuilding and not getting value out of the thing should be included
- jbay808 6y agoIt seems counterintuitive to conclude "we can't afford to build this bridge in the first place, because it would be too expensive to temporarily close it". But based on your sibling's post, maybe you're right?
- murkt 6y agoYes, for example, it is much harder to rebuild a bridge in the middle of a city than it was to build anew. Maybe that bridge was constructed in the open field and now the area around is built up. There are a lot of traffic and it should go somewhere while the bridge is closed. A lot of communication lines could go through this bridge and you have to account for it, plan for it and somehow move it while you’re rebuilding the bridge. Can you just leave it as it is? I’m not sure, it’s a Soviet-build bridge, lots of cement was stolen during construction and now some pieces of concrete are raining down.
- amelius 6y agoBut wait, doesn't that depend on whether you view the money not made during the shutdown of the bridge as "lost" or as "not made"?
- hyakosm 6y agoThis exact problem happened in Montréal with the Champlain bridge, cheaply built in the 60s. A new bridge had to be built at the same place (inaugurated last year) and connected to existing infrastructure.
- tristor 6y agoYes, especially if it was made with materials which need to be abated