CRANBERRY TOWNSHIP, Pa. (KDKA) – Plans for a $12 million tunnel connecting I-79 to a development in Cranberry Township are moving along.

The township says the Board of Supervisors approved a $12 million contract with Allegheny Excavating Inc. on Thursday for the tunnel that will be constructed beneath Route 228, connecting the Interstate to the Cranberry Springs development.

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Work on the MSA Thruway project will begin in spring and is predicted to be done by 2021. The project will include the tunnel, ramps, a roundabout and sidewalks, the township says.

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During construction, officials say traffic will be maintained on Route 228.

The township says MSA donated about $3.5 million of land for the project, the Board of Supervisors entered into funding with Sippel Enterprises L.P. and UPMC. The township will also contribute $2.5 million towards the project.

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The hope from the township is that the project will ensure the Route 228 Interchange “will avoid the conditions” at the intersection of Route 19/I-79 northbound.