MaMaJo ‘cutter head’ lowered below ground

Local News

MaMaJo is subterranean.

The first piece of the affectionately named tunnel boring machine tasked with digging a 5-mile tunnel more than 200 feet under the earth’s surface was lowered below ground Monday morning. The “cutter head” was hoisted down the 220-foot working shaft, where it will join with other pieces by the spring to create a 400-foot machine that will grind through bedrock to create a tunnel with an interior diameter of 16 feet.

Deep Rock Tunnel, Fort Wayne’s most significant public infrastructure project, will reduce – by more than 90 percent – the amount of combined sewer overflow sent into the city’s rivers, and will protect neighborhoods from basement back-ups and street flooding.

The tunnel boring is expected to be complete by 2021, and the connection to the neighborhood sewers should be done in 2023. The tunnel will be operational in 2023.

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