September 3, 2012, 5:12 p.m.

Space shuttle Endeavour’s final 12-mile journey through the streets of South Los Angeles already promises to be a meticulously planned spectacle: a two-day parade, an overnight slumber party in Inglewood and enough hoopla to create a giant traffic mess.

But for some residents in South L.A., the excitement of the shuttle rumbling through their neighborhoods quickly faded when they learned that 400 trees will be chopped down to make room for the behemoth.

The California Science Center — Endeavour’s final home — has agreed to replant twice as many trees along the route from the shuttle’s docking place at Los Angeles International Airport to Exposition Park