The project spans westbound SR-91 from the vicinity of Shoemaker Avenue to the I-605/SR-91 interchange, used by 270,000 vehicles a day. It also includes improvements to the Norwalk, Pioneer and Bloomfield local interchanges within the Gateway Cities, a 200-square mile, 15-community region, located in the southeast area of Los Angeles County and home to approximately two million people.
The Michael Baker team has identified that congestion in this area is the result of insufficient SR-91 freeway mainline capacity, inadequate capacity of the existing two lane connector for the westbound SR-91 to northbound and southbound I-605, and closely spaced freeway entrance and exit ramps.
