Construction on a new building in the largest park in Minneapolis will close a stretch of Theodore Wirth Parkway for several days this summer, starting Thursday.

The Trailhead, Theodore Wirth Park's new building, will house attractions like a cafe, equipment rental and locker rooms.

Work on the project will run through the summer and include additions like parking lots and lights, according to a Minneapolis Park Board release. Construction will shutter Theodore Wirth Parkway between Plymouth Avenue N. and Hwy. 55 for some days, the release said, adding that the Theodore Wirth Trail in that area will close for several weeks.

The Park Board plans to update its website with road closure information and provide signage, said spokeswoman Robin Smothers.

The Trailhead, formerly called the Adventure and Welcome Center, is a partnership between the Loppet Foundation and the Park Board. The Loppet Foundation has championed the building, calling it "the hub of activity for year-round outdoor endurance-based activities in the Minneapolis area" on its website.

"We believe that the Trailhead will create a space for diverse communities to unite over a shared enthusiasm for year-round outdoor activities," the Loppet Foundation said on its website.

The Trailhead's single-story 14,000-square foot building will include features like a bike and ski shop and strength and conditioning room, the Loppet Foundation's website said.

The project has seen delays since the concept was approved in 2012. Expenses have spiked from $4.5 million to more than $8.5 million. Park staff have said bringing in consultants for a state environmental review, picking a costlier option for modifying the 18-hole golf course, and the need for larger water and sewer pipes all contributed to the increase.

The Loppet Foundation had raised more than $4 million for the project through the end of last year.

Beena Raghavendran • 612-673-4569