---
title: US - Shugborough Tunnel Shaft Void Filling & Lining
description: Geobear filled hidden shafts and lining voids in Shugborough Tunnel with geopolymer injection. Completed in 40 night possessions, delivering a 120-year design life and 45% lower CO₂ vs grout.
---

[Case Studies - Infrastructure ](https://www.geobear.com/en-us/infrastructure/references)

# [US - Shugborough Tunnel Shaft Void Filling & Lining](https://www.geobear.com/en-us/infrastructure/references/shugborough-tunnel-shaft-void-filling)

 Written by [Brian Jones](https://www.geobear.com/en-us/infrastructure/references/author/brian-jones) | Dec 15, 2025 1:19:31 PM

[View full post](https://www.geobear.com/en-us/infrastructure/references/shugborough-tunnel-shaft-void-filling)

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