Florida State Road 423

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State Road 423 and County Road 423

County Road 423
SR 423 in red, CR 423 in blue
Route information
Length21.33 mi[1][2] (34.33 km)
7.533 miles (12.123 km) as SR 423[2]
Existedearly 1970s–present
Major junctions
South endJohn Young Parkway in Hunters Creek
Major intersections
East end US 17 / US 92 in Winter Park
CountryUnited States
Highway system
SR 421 SR 424

State Road 423 (SR 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 runs from SR 408 north to U.S. Routes 17/92 (US 17/92) just east of Interstate 4 (I-4).

SR 423 and its southern components serve as an alternate to the parallel Orange Blossom Trail. The road is named after John Young, a NASA astronaut and one of twelve men to walk on the Moon, who was from the Orlando area.[3]

Route description

SR 423 is signed north-south when named John Young Parkway, while Lee Road it is signed east-west.

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, becoming an east-west road to its terminus at U.S. Route 17/92 just east of Interstate 4.[4]

South of State Road 423's southern terminus, John Young Parkway, known as County Road 423 continues south towards I-4, the Beachline Expressway and the Southern Connector. South of the Osceola-Orange county line, it is unsigned County Road 531A and continues to a single-point urban interchange 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—which included widening the existing roadway from four to six lanes from Shader Road to the U.S. 441/Orange Blossom Trail intersection, constructing two new overpasses and completing a new 1-mile alignment extension to Forest City Road/S.R. 434 at the intersection with Edgewater Drive/S.R. 424—was completed in 2013.[5] Benefits of the extension include a direct connection between John Young Parkway and SR 434 and a much-improved alternate route to serve commuters during I-4 Ultimate construction.[6]

Future improvements include widening John Young Parkway from SR 50 to Shader Road from four lanes to six lanes. This capacity improvement project will also improve the level of service and enhance safety. Design is expected to be complete in Spring 2015. Construction is currently not funded; the duration is anticipated to be 24 to 30 months.[7]

Major intersections

The entire route is in Orange County.

Hunters Creek0.00.0John Young Parkway southContinuation into Osceola County
SR 417 to I-4 – International Airport
Exit 10 on SR 417 (Central Florida GreeneWay)
SR 528 to I-4 – International Airport, Cocoa
Exit 3 on SR 528 (Beachline Expressway)

SR 482 (Sand Lake Road) to US 17 / US 92 / US 441 (Orange Blossom Trail) / International Drive
Oak Ridge9.014.5Oak Ridge Road (CR 528A)
Orlando11.518.5 I-4 – Tampa, Daytona BeachExit 79 on I-4 (SR 400)
Church StreetTransition from CR 423 to SR 423
SR 408 to I-4 – Downtown Orlando, Ocoee
Exit 8A on SR 408 (East-West Expressway)
0.3940.634 CR 526 (Old Winter Garden Road)
0.8801.416 SR 50 (Colonial Drive) – Winter Garden
2.0823.351 SR 438 (Princeton Street)
2.6624.284 SR 416 (Silver Star Road) – Ocoee, Winter Garden
SR 434 north – Altamonte Springs
interchange; northbound exit and southbound entrance; southern terminus of SR 434
4.1026.602 US 441 (Orange Blossom Trail) – Apopka, OrlandoRoad is unsigned SR 500
4.8397.788 SR 424 (Edgewater Drive)
Winter Park6.25010.058

I-4 / US 17 Truck north / US 92 Truck east – Tampa
Exit 88 on I-4 (SR 400)
6.33610.197Wymore Road – Eatonville
7.53312.123 US 17 / US 92 (Orlando Avenue)Road is unsigned SR 15 / SR 600
1.000 mi = 1.609 km; 1.000 km = 0.621 mi


  1. ^ a b Google (June 15, 2019). "County Road 423" (Map). Google Maps. Google. Retrieved June 15, 2019.
  2. ^ a b c FDOT straight line diagrams Archived March 6, 2014, at the Wayback Machine, accessed December 2013
  3. ^ Volz, Brianna (January 6, 2018). "Astronaut John Young, who grew up in Orlando, dies at 87". WKMG. Retrieved January 24, 2019.
  4. ^ Google (2010-08-01). "overview map of State Road 423" (Map). Google Maps. Google. Retrieved 2010-08-01.
  5. ^ http://www.roadsbridges.com/sites/default/files/36_John%20Young%20Parkway_RB0614.pdf All articles with bare URLs for citations[bare URL PDF]
  6. ^ West Orlando News Archived 2014-05-06 at archive.today
  7. ^ Florida Department of Transportation