Reaching another milestone for the for the I-405 Sepulveda Pass Improvements Project, Metro, Caltrans and contractor Kiewit Infrastructure West have opened a brand new, longer and safer “flyover” ramp at the Wilshire/I-405 interchange in Westwood.
The southbound I-405 offramp to eastbound Wilshire Boulevard officially was open for its very first work-day rush-hour commute this morning (Monday, Sept. 23), and is a whopping 300 percent greater capacity than the previous off-ramp. The original ramp, built as part of the Wilshire Interchange in the mid-1950s, was only 1,330 feet. The new ramp is 3,117 feet long and provides a dedicated lane for all exiting traffic to the Westwood area, one of the largest job centers in L.A. County.
Construction of the ramp was originally slated for a 90-day closure similar to previous Wilshire interchange ramps. However, the contractor was able to completely avoid the closure by developing alternate work plans and performing work primarily during night-time hours. The revised work plans and schedule were the result of concerted efforts by all project team members to mitigate and accelerate the work as much as possible.
“Metro continues to be laser-focused on the ongoing completion of key parts of the I-405 project and delivering them to the public just as soon as they’re ready,” said K.N. Murthy, Executive Director of Transit Project Delivery for Metro. “Working with the contractor, we were able to completely eliminate several other extended ramp closures here at the Wilshire Interchange. By the end of this year, we anticipate finishing all of these ramps and finally bringing some much-needed relief to Westside motorists.”
The newly completed ramp is the second to last ramp to be completed at this interchange. The eastbound Wilshire on-ramp to the northbound I-405 is the last remaining ramp now under construction, and is scheduled to open in mid-late November.
The new ramp configuration removes the perilous weave that occurred between motorists who had to compete for ramp space as they exited and entered the freeway from Wilshire Boulevard. The dedicated ramps eliminate these conflicts and the additional storage capacity will help remove auto congestion from the freeway itself.
When all work is complete, the ramps combined will add 75 percent more capacity to the Wilshire-405 interchange, bringing capacity enhancements to 2031 travel demands. Additionally, rebuilt ramps will conform to the latest seismic safety standards.
All ramps at Wilshire were rebuilt to widen the I-405 freeway between the I-10 and U.S. 101. The project will finally complete the last remaining gap of the I-405 carpool lane network between Orange County and San Fernando Valley. When complete next year, the I-405 will have the longest continuous, bi-directional carpool lane network in the country.
Categories: Transportation News