Original sentence: For a short while, from the I-405 Freeway west to Centinela Avenue, the freeway is 8 lanes wide.However, because the Route 90 Freeway was never completed east all the way to Yorba Linda and the Route 91 Riverside Freeway, the freeway quickly narrows to 4 lanes west of Centinela, where it then ends at Culver and continues as an expressway
Edited sentence: However, the freeway portion is being extended just past Culver with a new interchange at this location (see below).One of the remarkable (and also sad) features of this freeway is the fact that for a short while (from the I-405 Freeway west to Centinela Avenue), the freeway is 8 lanes wide.This gives drivers a glimpse of what could have been had the Route 90 Freeway been built east all the way to Yorba Linda to the Route 91 Riverside Freeway.West of Centinela, the freeway quickly narrows to 4 lanes where it ends at Culver and continues as an expressway