Broward County Military Trail is a continuation of Andrews Avenue Extension, which itself is a continuation of Andrews Avenue (
CR 811A) built in the 2000s. At an intersection with Sample Road (
SR 834), Andrews Avenue transitions to Military Trail. For the first , the road is cosigned as Northwest 9th Avenue in the
Deerfield Beach numbering system, before jogging to the east and intersecting Southwest 10th Street, which is an eastward extension of the
Sawgrass Expressway (SR 869). Shortly after crossing Hillsboro Boulevard (
SR 810), Military Trail bridges the
Hillsboro Canal and enters
Palm Beach County.
Palm Beach County The southern segment of CR 809 begins at the Hillsboro Canal Bridge in
Boca Raton. Throughout Palm Beach County, the road has a speed limit of and has three lanes in each direction, primarily serving shopping centers, malls, restaurants, businesses. Military Trail intersects Palmetto Park Road (
CR 798), but not Glades Road (
SR 808) due to an elevation change. Glades passes over Military Trail due to it being very close to the
Tri-Rail tracks and
Interstate 95, so access is provided by nearby service roads, which also serve the
Boca Town Center. Military Trail also intersects Yamato Road in Boca, which exists east of CR 809 as
SR 794 and west as CR 794. Still in Boca, Military Trail also intersects Clint Moore Road. As it enters
Delray Beach, Military connects with Linton Boulevard (
CR 782) and West Atlantic Avenue (
SR 806), which provides access to downtown Delray. In
Boynton Beach, the road intersects Woolbright Road (
CR 792), Boynton Beach Boulevard (
SR 804), and Gateway Boulevard. In Delray and Boynton, Military Trail also provides access to the many country clubs located off the road. In
Greenacres, Military Trail intersects with Lake Worth Road (
SR 802) and CR 809 transitions to SR 809. SR 809 begins at the intersection of Military Trail and Lake Worth Road. SR 809 intersects Southern Boulevard (
US 98 and
SR 80) in a diamond interchange. For the next mile, SR 809 acts as the western border of
Palm Beach International Airport, until intersecting with Belvedere Road. One mile north of the northern end of the airport, it intersects Okeechobee Boulevard (
SR 704), a major intersection in the city. Continuing north, Military Trail passes by
Northwood University to the east, and north of Community Drive, SR 809 becomes a service road for housing developments. Following an intersection with 45th Street (
CR 702), SR 809 leaves
West Palm Beach and enters
Riviera Beach. There, it intersects with the Bee Line Highway (
SR 710) and Blue Heron Boulevard (
SR 708) at the outskirts of the West Palm Beach VA Medical Center. Continuing into
Palm Beach Gardens, SR 809 ends at PGA Boulevard (
SR 786). At PGA Boulevard, SR 809 terminates and Military Trail once again becomes CR 809. This designation continues for just under north to Indiantown Road (
SR 706) in
Jupiter. ==History==