Construction for the Portland Timbers' stadium expansion is well underway.

Work on the project, which will cost over $55 million, began after Thanksgiving, and expected to be complete by spring 2019, The Oregonian reported.

Construction includes:

• foundation and utility work, where Turner Construction will lay 228 micropiles to support three new levels of the stadium, as well as a bigger roof on the structure's east side;
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  Sidewalk widening;

A permanent crane will soon be installed on the site to support the construction of one of the three new levels during the 2018 season, The Oregonian reported.

"We continue to work feverishly, said Mike Golub, Timbers president of business. "We remain on schedule, which is exciting."

The Portland City Council officially approved the extensive project in December 2017.