First, an important point: we’re asking again to please avoid driving this weekend because of the shutdown of 10 miles of the 405 freeway in order to demolish the north side of the Mulholland Drive Bridge.

The 405 is, as you know, an integral part of our regional freeway system and removing it from service for 60 hours can’t be done without impacts. The best way to avoid having a big, pointless traffic jam is to do your part to avoid making it worse — and leave the roads this weekend to those who have no choice but to drive for reasons of work or emergency.

There is a lot going on this weekend; the short list is below. Keep in mind that Metro Rail, the Orange Line and Silver Line are now running until 2 a.m. on Friday and Saturday nights and that Metrolink is adding trains between Chatsworth and Union Station.

Click above to go to the interactive version of the map.

•Metro has partnered with almost 300 L.A. County restaurants, businesses, venues and tourist destinations to offer discounted “Carmageddon II” specials as part of its ongoing campaign to encourage the public to “Eat, Shop and Play Locally” September 29-30. Here’s the news release.

•ARTmageddon is promoting theaters, galleries and museums offering shows and exhibits in neighborhoods across the region, with many offering discounts. Check out the ARTmageddon website for a map and list of shows near you.

•There are a variety of organized bike rides being offered on the Westside on Saturday. The Los Angeles County Bicycle Coalition has the rundown on their website — the rides are different lengths and begin in different places, including the very easy-to-reach Expo Line Culver City station.

•Heading to the beach? Take the Expo Line to the La Cienega station, ride one block west on the Expo Line bike trail and then pick up the Balloona Creek Bike Path. From there it’s a short ride south to Marina del Rey and the coastal bike parth. North to Venice Beach and Will Rogers beach in Santa Monica; south to Playa del Rey, Dockweiler State Beach, Manhattan Beach and Hermosa Beach.