Precast Tunnel Liner Segments

Specialized and used in large diameter, bored tunnels

•Proven strength, durability and dimensional accuracy
•Custom segment thickness, length and radius
•More cost-effective than poured-in-place large diameter tunnels

Liners are manufactured to a specific design radius in a series of segments. Segments are installed in the field to form a complete ring that supports the surrounding soil and rock.

Shamrock Lake Concrete Culvert Rehabilitation:

  • Located on Highway 11 in East McKirdy, Ontario a 108 year old cast-in-place (CIP) concrete box culvert located 9 metres beneath the highway was failing. A solution was required to rehabilitate...MORE

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