The 49th annual Acura Grand Prix of Long Beach has nearly arrived. That means a couple of things: On the one hand, downtown Long Beach will essentially be one giant party from Friday to Sunday, April 19-21. But on the other, navigating the area in your car will be a challenge. And not just during the three-day event — but for a few days before and the day after. Staggered street closures, in fact, will begin on Wednesday, April 17, with some remaining closed until Monday, April 22. Here are the streets to avoid over the next week. Wednesday, April 17 All side streets leading into the Grand Prix’s circuit off Shoreline Drive and Seaside Way will close at 4 a.m. A few hours later, at 7 a.m., the northbound Queensway Bridge off-ramp and southbound Queensway Bridge on-ramp for Shoreline Drive will also shut down, along with Aquarium Way south of Shoreline Drive and westbound Shoreline Drive generally. At 3 p.m., Shoreline Drive eastbound from Broadway to Ocean Boulevard will also close. Pine Avenue, according to a recent city news release, will stay open to