Florida State Road 436

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State Road 436 marker

State Road 436
Semoran Boulevard
East Altamonte Drive
Route information
Maintained by FDOT
Length25.532 mi[1] (41.090 km)
Major junctions
West end US 441 in Apopka
  I-4 in Altamonte Springs
US 17 / US 92 in Casselberry
SR 408 in Orlando
East end SR 528 at Orlando International Airport
CountiesOrange, Seminole
Highway system
SR 435SR 437

State Road 436 (SR 436), known as Semoran Boulevard for most of its length and Altamonte Drive in Altamonte Springs, is a northwest-southeast beltway in the Orlando area running from US 441 in Apopka to the Beachline Expressway near Orlando International Airport. Constructed in the late 1960s, the road passes through Seminole County, Florida and Orange County, Florida. Because of this, the common name for SR 436 is a portmanteau of the names of the two counties: "Sem" and "oran", hence "Semoran Boulevard." The common pronunciation of "Semoran" resembles that of Cimarron.[pronunciation?]

Route description[edit]

Starting at the intersection with US 441 in Apopka, SR 436 runs east and intersects with SR 434 and Interstate 4 (I-4). East of this interchange, the road is named East Altamonte Drive, and widens to 8-10 lanes. The road returns to the Semoran Blvd. designation and begins to turn to the south after the interchange with US 17 and US 92 (U.S.17-92). Heading south, the road enters Orlando and intersects with East Colonial Drive (SR 50) under a flyover intersection. This intersection was considered to be one of the deadliest intersections in the nation with an average of three accidents per day. It then intersects the Holland East-West Expressway, still heading south. The road has interchanges with SR 552 and SR 15 before ending at the Beachline Expressway. South of the interchange, the road continues south without a state road designation as the main access road to Orlando International Airport.


Construction began in October 2011 on a $24.5 million project to build a flyover ramp from eastbound SR 436 to Red Bug Lake Road in Casselberry in order to reduce congestion from motorists having to wait at a traffic light to turn onto Red Bug Lake Road. On February 1, 2014, the flyover ramp from eastbound SR 436 to Red Bug Lake Road opened to traffic. In late 2013, the Florida Department of Transportation began an $80 million project to construct a flyover interchange with US 17-92 traveling over SR 436 in Casselberry.[2] This interchange was built to alleviate congestion at one of the busiest intersections in Florida. The flyover interchange was completed on April 6, 2015, with a ribbon-cutting ceremony held.[3]

Major intersections[edit]

OrangeApopka0.0000.000 US 441 north (SR 500)interchange
0.3480.560 To US 441 south / Sheeler Road
SeminoleAltamonte Springs4.9397.949 SR 434
6.8511.02 I-4 (SR 400) – Orlando, Daytona BeachI-4 exit 92
8.26813.306 CR 427 south (Maitland Avenue)west end of CR 427 overlap
8.74614.075 CR 427 north (Ronald Reagan Boulevard)east end of CR 427 overlap
Casselberry9.79915.770 US 17 / US 92 (SR 15 / SR 600) – Orlando, Sanfordinterchange
11.29118.171Red Bug Lake Road - Oviedoeastbound flyover ramp
Orange14.34923.092 SR 426 (Aloma Avenue) – Winter Park, Goldenrod
14.84923.897University Boulevard - University of Central Florida, Full Sail University
17.6628.42 SR 50 (East Colonial Drive)interchange
Orlando18.8730.37 SR 408 west – Downtown OrlandoSR 408 exit 14
18.90630.426 To SR 408 east / Lake Underhill Road (CR 526) – Titusville
19.97832.151 SR 552 (Curry Ford Road)
22.93936.917 SR 15 (Hoffner Avenue)
24.98740.213 SR 528 to I-4 / Florida's Turnpike / International Drive – Cocoa, Kennedy Space Center, Tampa, Tradeportsigned as exit 1A (SR 528 east) and 1B (SR 528 west); SR 528 exit 11
25.53241.090 Orlando International Airport
1.000 mi = 1.609 km; 1.000 km = 0.621 mi


  1. ^ a b FDOT straight line diagrams Archived March 6, 2014, at the Wayback Machine., accessed December 2013
  2. ^ Comas, Martin E. (January 30, 2014). "Casselberry's State Road 436 and Red Bug Lake Road flyover set to open Saturday". Orlando Sentinel. Retrieved November 14, 2018.
  3. ^ Chavez, Crystal (April 6, 2015). "Ribbon Cutting Monday For New US 17-92 Flyover". WMFE-FM. Retrieved November 14, 2018.