Sculpture at the River Market, the nonprofit that puts on the Sculpture at the River Market Show and Sale of work by artists who work nationally, opens with its $100 ticket preview Friday. The preview lets ticketholders vote on the next sculpture the nonprofit will commission for the corner of Broadway and Markham, by City Hall. The preview and show will be at the River Market pavilions.

Seven sculptors are semifinalists in the competition for the $60,000 commission: Nnamdi Okonkwo of Fayetteville, Ga.; Basil Watson of Lawrenceville, Ga.; Clay Enoch and Joe Norman, both of Loveland, Colo.; Theresa Dyer of Nashville, Tenn., Charles Strain of Harrisburg, Mo.; and Ryan T. Schmidt of Benton. Okonkwo has work in the Riverfront Park Sculpture Garden; Enoch is a previous commission winner, creating the “Unity” sculpture at Central High School; and Schmidt has a sculpture at the Governor’s Mansion.

Okonkwo proposes a 6’x8’x7′ bronze enlargement of his 10.5-inch tall “Unity.” Watson, son of Jamaican painter Barrington Watson, has entered his 6-foot-tall (before pedestal) bronze of a woman athlete, “Breaking Barriers.” Enoch proposes “Community,” a 7’x10’x3′ image representing people — a child with books, a woman with a baby, a person on a bike, standing side-by-side on an arcing base. Norman proposes a 12’x4’x2′ “multifocal” stainless steel image that reads as butterflies in one direction and spells out the word “homeward” on the back. Theresa Dyer, who is also an architect, proposes a 10’x12’x4′ stainless steel sculpture of two boys, back to back, looking at a star. Charles Strain has entered his 12’x6’x6′ bronze “The Gathering,” which also stands at the Des Moines University Student Education Center. Schmidt proposes his 10’x5′ stainless steel abstract from his “Tango” series.

The show will be open to the public 9 a.m.-5 p.m. Saturday, May 4, and 10 a.m.- 4 p.m. Sunday, May 5. The winner of the commission will be announced at 3 p.m. Sunday.