To improve traffic flow and relieve congestion at the SR 429/CR 535 interchange, the Central Florida Expressway Authority (CFX) built new ramps to and from Stoneybrook West Parkway. This work, which occurred nearly a mile south of the SR 429/CR 535 interchange, included a new exit ramp from southbound SR 429 to Stoneybrook West Parkway and a new entrance ramp from Stoneybrook West Parkway to northbound SR 429. Auxiliary, or merge, lanes and All-Electronic Tolling (AET, allows payment by E-PASS, other accepted transponders, or Pay By Plate) are being added as well. Drivers with an E-PASS or other accepted electronic transponders will save on Pay By Plate charges. The work was completed in October 2020.