The Boring Company's Prufrock-5 has wrapped up a test tunnel in Bastrop, Texas, marking a key milestone before the machine's next major deployment. The company confirmed the news early Tuesday, noting the roughly 900,000 lb boring machine is set to re-launch in November.
Bastrop has served as The Boring Company's primary manufacturing and testing base, and Prufrock-5 exited that facility back in November 2025 to begin its development cycle. Completing a test tunnel there confirms the machine has gone through its paces ahead of what the company is billing as a November re-launch — likely the start of a full-scale tunneling assignment. No project destination has been announced yet.
Prufrock-5 is the latest iteration in The Boring Company's line of tunnel boring machines, each generation designed to push faster excavation speeds and reduce the per-mile cost of underground transit infrastructure. At nearly half a million kilograms, the machine is an engineering undertaking in its own right — the test tunnel phase exists to verify performance before committing to a live project corridor.
The November timeline gives the team roughly six weeks to complete any final adjustments and mobilize the machine to its next site. Where that is remains the open question.
Sources & reporting notes
The links below identify the material source records used for this report.
- @boringcompany on X (2026-09-16T05:29:23.000Z) — Direct source
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