The owners of Pioneer Place Mall are asking the city's permission to demolish one of two sky bridges over downtown streets—one more step toward constructing a one-story glass building many have speculated will be an Apple Store.

A request submitted to the city last week shows the mall wants the sky bridge over Southwest Yamhill Street between Fourth and Fifth avenues torn down so it can put in a glass-enclosed street front retail space along the eastbound MAX line, where Saks Fifth Avenue stood until 2010.

In May, Pioneer Place owners General Growth Properties submitted plans for a one-story, 26,297 square-foot space with a clear glass facade on three sides, facing north onto Yamhill. The plans indicate a single retail tenant, with a stone plaza along the MAX line.

City planning officials say they don't know what tenant Pioneer Place has in mind, and representatives for the mall haven't yet returned WW's calls.

But The Oregonian suggested back in February that Apple might be looking to move up from its store in Pioneer Place's basement level. Initial plans were submitted to the city by Apple's preferred architect, Bohlin Cywinski Jackson, and at least one blog that follows Apple's retail spaces raved that the store would be Apple's widest in the world.

According to the Design Advice Request submitted by two architects from Apple’s architectural firm Bohlin Cywinski Jackson,

the Apple store would have a 165-foot storefront, a 17½-foot tall

interior and over 9,000 square-feet of public space. A notation on one

drawing indicates the “gross square footage” of the entire project is

23,532, and the plaza totals 4,283 square-feet.

Currently, the widest storefront is George Street (Sydney) at 120 feet. This proposed store would be 45 feet wider than that.