Two methods handle most cases. Lining pulls a resin-soaked liner through the damaged run from a couple of access points; once it cures against the old pipe’s inner wall, the line has a new interior with no joints running through it, and nothing around the pipe gets disturbed. Bursting pulls a new pipe through the same path while a head ahead of it fractures the failing one outward into the surrounding soil, replacing it outright rather than resurfacing it. Neither needs a trench the length of the run, only small openings near each end, which is what keeps a fence line, a paddock, or a driveway out of the job entirely.
Not every line qualifies. A severe collapse or too little pipe left standing calls for excavation instead, so we scope the run with a camera first and show you exactly why one method or the other fits your case.