In the summer of 2010, the Expressway Authority began the widening of SR 408 from Oxalis Avenue to Goldenrod Road as well as the widening of the SR 408 Chickasaw Trail Bridge. This project was completed in March 2012. In addition, the interchange with SR 417 was expanded. This resulted in the elimination of SR 4080 and the interchange with Valencia College Lane. Traffic to Valencia College was redirected to Chickasaw Trail and Dean Road. On October 13, 2016, Central Florida Expressway board members approved to rename a portion of SR 408 after professional golfer Arnold Palmer. State Representative Mike Miller and State Senator David H. Simmons sponsored legislation for renaming the road, which was signed into law by Governor Rick Scott on June 14, 2017. The section of SR 408 between Kirkman Road and Clarke Road was renamed the Arnold Palmer Expressway on July 1, 2017. A stack interchange with Interstate 4 near downtown Orlando replaced the original double-trumpet interchange in recent years. The first construction phase began in April 2006 and was completed in November 2008. Due to a lack of funds, the rest of the interchange project was ultimately postponed until the I-4 Ultimate project. Following the first phase, the ramp that originally handled all traffic merging from I-4 only handled traffic from I-4 eastbound, which left abandoned lanes. A ramp stub was constructed in advance of the completion the conversion to stack interchange on SR 408 westbound. The Florida Department of Transportation was responsible for this project. On May 19, 2020, Governor Ron DeSantis formally opened the reconstructed SR 408 ramps with I-4. This was completed as part of the acceleration of I-4 Ultimate improvement project as part of the lack of traffic in Florida due to stay-at-home orders that were implemented within the state of Florida during the COVID-19 pandemic. Future The OOCEA 2025 Master Plan (2000) suggested extending SR 408 further east toward the west end of SR 520. In the OOCEA 2030 Master Plan, this proposed extension was further extended to I-95 in Brevard County. Exit list Challenger Parkway Route description Begins at Fl 408 50 interchange ends at parking lot west of sr 434 See also Central Florida Expressway Authority References External links SR 408 (East-West Expressway) – Central Florida Expressway Authority Terraserver "Urban Areas" image of SR 4080 TerraServer "Urban Areas" image of former SR 4081 Florida @ SouthEastRoads – Florida