State Road 436 (SR 436), known as Semoran Boulevard for most of its length and Altamonte Drive in Altamonte Springs, is a north-south road (east-west after US 17/92) in the Orlando area running from US 441 in Apopka to the Beachline Expressway near Orlando International Airport.

Heading west, the road enters Altamonte Springs, Florida and has an interchange with I-4 at exit 92.

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.