No one said it would be easy.

Starting this week, Hennepin County shoppers will begin ponying up an additional .15 percent sales tax to help pay for a new Twins ballpark, whose design and logistics already bear signs of becoming tangled balls of fishing tackle.

As they say, the devil is always in the details. In this case, impending glitches for the $522 million project include:

LOCATION, LOCATION, LOCATION: The cramped few acres designated for the downtown park will create a fit tighter than shoes a size too small. This was known going in.

Much less publicized: The land has yet to be purchased from its owners, which include a Houston real estate firm that presumably knows how to get blood from a turnip.

The county’s spending cap on land acquisition is $90 million. If fair market value exceeds that, things could get interesting.

CHOO-CHOO, BUT NO ROOM FOR YOU: The light-rail station to be built just outside the stadium has the potential to make that area resemble a Tokyo subway at rush hour.

An anticipated 4,000 fans will enter and exit trains there at every game. The necessarily petite design of the boarding area calls for a space 23 feet wide.

Just for yuks, I got out my tape measure. My family room is exactly 23 feet wide. Uh-oh.

Minnesota Ballpark Authority director Dan Kenney tried to put a cozy spin on this by comparing it to the same crowded urban-ballpark experience fans get at a Chicago Cubs game.

Two things wrong with that: The passenger-dispersal spaces around Wrigley Field are expansive by comparison, and Wrigley has been around since God made dirt. It’s long been paid for, unlike the new Twins park, where ballyard-funding taxpayers deserve better.

WHAT? NO MOAT?: Design plans for the ballpark’s outside perimeter appear to create something less than an inviting, urban neighborhood atmosphere. The potpourri of concrete this, barrier that includes an 8-foot-high wall running the length of an adjacent street.