The other guy's quote for $10k is insane. There was already a gap in the foundation for access to the crawlspace, a bit of damage on either side of it will not cost that much to repair and is not an urgent structural issue.
Have a plumber fix those pipes then get under there, support the joist with a jack, cut out the damaged pieces, reinforce and build a form, pour, let set, remove jack. Maybe $5k total if you have all the work done professionally. Plumber would probably charge you more than the concrete guy.
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u/TertiaryOrbit 7d ago
Roughly, how much would it cost to fix something like this?