Planning any significant travelling in the LA metro area this weekend? You may want to rethink your trip. The Sepulveda Pass Improvements Project strikes again this weekend, and this portion, Carmageddon II as it is affectionately being dubbed, will happen simultaneously with the shutdown of Venice Boulevard on Sunday for the Herbalife Triathlon.

Both last summer’s Carmageddon I and this weekend’s Carmageddon II are part of the Sepulveda Pass Improvements Project, a billion-dollar joint venture between Metro and Caltrans, funded by the City of Los Angeles, the state of California and the federal government.

Carmageddon II will focus on demolishing the north side of the Mulholland Bridge. It will be nearly a year before the bridge is rebuilt, but when it is finished it will be wider and longer than its predecessor, according to KPCC.

From 7:00 p.m. on Sept. 28 to 5:00 a.m. on Oct. 1, the Los Angeles County Metropolitan Transportation Authority will close the Sepulveda Pass of the 405 Freeway (the stretch of the 405 between the 10 and the 101 freeways). Specifics of the closure by day and by segment can be found on the METRO website.

From 7:00 a.m. to around 1:30 p.m. on Sept. 30, the Los Angeles Department of Transportation will close Venice Boulevard for the athletes participating in the Herbalife Triathlon. A detailed breakdown of the closure can be found on the Los Angeles Police department website.

For those set on travelling this weekend, the Huffington Post offers a helpful and detailed breakdown of alternative routes for various times of travel.

Daunting as all the simultaneous roadwork may sound, Los Angeles City Councilmember Bill Rosendahl is optimistic about the weekend.

“I want my constituents to be aware of these major events taking place in our City this weekend,” says Rosendahl in one of the press releases regarding the overlap of Carmageddon II with the Herbalife triathlon. “Whether you’re going to church or meeting friends, driving in L.A. on Sunday morning will take some patience and a little planning.”

In the release, he also provides suggestions for alternative routes of transportation and details for when to avoid the Sepulveda Pass and Venice Boulevard.

Councilmember Rosendahl worked with the Los Angeles Fire Department to ensure, just as with the original Carmageddon, sufficient fire and emergency medical resources would be present, the press release notes.

Reach Staff Reporter Fiona here.