Thom Bridge

What does the Project entail?

The City of Helena is replacing butterfly valves, air release valves, and blow-off valves on the existing Crosstown Connector Water Transmission Main. Phase 1 includes work at 13 locations on the west side of Helena.

What is the Crosstown Connector Water Transmission Main?

It is a 24-inch diameter water transmission main that connects the Ten-Mile Water Treatment Plant to the City of Helena’s reservoirs in the Malben High Pressure Zone.

Why is the project taking place?

The existing valve components are more than 60 years old. Replacing them will improve the operation, reliability, and resiliency of the City’s water transmission system.

What to Expect?

• Temporary street closures and traffic control measures.

• A temporary water pipe near t

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