Florida State Road 423
|John Young Parkway
|Maintained by FDOT|
|Length:||7.40 mi (11.91 km)|
|Existed:||early 1970s – present|
|South end:||SR 408 / CR 423 in Orlando|
| SR 50 in Orlando
SR 438 in Orlando
SR 416 in Orlando
US 441 / SR 500 in Orlando
SR 424 in Orlando
I-4 / SR 400 in Orlando
|North end:||US 17 / US 92 / SR 600 in Orlando|
State Road 423, known for most of its length as John Young Parkway, and Lee Road east of Orange Blossom Trail, is a four- and six-lane surface road in the U.S. state of Florida. SR 423 is completely inside Orlando, Florida and runs from SR 408 north to U.S. Route 17/92 just east of Interstate 4.
Route description 
SR 423 begins at an interchange with SR 408 and heads north towards Orange Blossom Trail. It then changes names to Lee Road east of Orange Blossom Trail to its terminus at U.S. Route 17/92 just east of Interstate 4.
South of State Road 423's southern terminus, John Young Parkway, known as Orange County Road 423 continues south towards I-4, the Beachline Expressway and the Southern Connector. South of the Osceola-Orange county line, it is signed as Osceola County Road 531A and continues to a diamond intersection with the Osceola Parkway, ending a bit north of Pleasant Hill Road near Kissimmee, where the name changes to Orange Blossom Trail heading towards Campbell and to the Osceola-Polk county line. The section from US 192 southward is also numbered US 17-92.
The first section of SR 423 was built by the Florida Department of Transportation in the early 1970s, from Colonial Drive (SR 50) west of downtown Orlando north to Orange Blossom Trail (US 441-SR 500). Over the years, extensions to the south have been built, some by Orange County and some by the state.
An additional extension is being built which will bring John Young Parkway northward from Orange Blossom Trail in Orlando to meet the west end of SR 434 and is expected to be "finished in about two years".
Junction list 
|0.0||SR 408 (east-west Expressway) / CR 423||Southern terminus, John Young Parkway continues south, Exit 8A (SR 408)|
|2.5||SR 416 (Silver Star Road)|
|3.9||US 441 / SR 500 (Orange Blossom Trail)|
|6.0||I-4 / SR 400 – Orlando, Daytona Beach||Exit 88 (I-4)|
|7.4||US 17 / US 92 / SR 600 (Orlando Avenue)||Northern terminus|
- Google Inc. Google Maps – overview map of State Road 423 (Map). Cartography by Google, Inc. http://maps.google.com/maps?f=d&source=s_d&saddr=FL-423+N%2FN+John+Young+Pkwy%2FN+Magruder+Ave&daddr=N+John+Young+Pkwy+to:N+Orlando+Ave&geocode=FdKHswEdNLol-w%3BFaYmtAEdpK4l-w%3BFa59tAEdRHcm-w&hl=en&mra=ls&via=1&sll=28.542363,-81.416051&sspn=0.009387,0.013797&ie=UTF8&t=h&z=13. Retrieved 2010-08-01.
- Tracy, Dan (June 23, 2011) "New north-south route on the way for weary Orlando commuters". Orlando Sentinel