FREDERICK, Md. (AP) — Frederick officials are starting work on the final phase of a downtown park that began as a flood control project.

They’re breaking ground Wednesday on a $15.8 million extension of Carroll Creek Park.

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The city says the work will largely complete a 30-year-old plan to protect the downtown by encasing 1.3 miles of the creek in an underground tunnel. A shallow stream on the man-made surface is bordered by broad walkways and new retail, residential and office buildings.

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The final phase of the project will extend development another block east to the McCutcheon’s Apple Products building. McCutcheon’s is among the few remnants of what was once an industrial area.

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