Florida State Road 997

State Road 997 (SR 997), also known as Krome Avenue and West 177th Avenue is a 36.7-mile-long (59.1 km) north–south state highway in western Miami-Dade County, Florida. It runs from State Road 998 in Homestead north across U.S. Route 41 to U.S. Route 27 near Countyline Dragway (formerly Opa-locka West Airport), just south of the Broward County line. Its main use is as a bypass around the western side of Miami, linking the routes that run southwest, west and northwest from that city. The road passes through newer suburbs in the southern third of its length, while the northern two thirds of the highway traverse the eastern edge of the Everglades.

State Road 997 begins in Homestead at the western terminus of SR 998 on Campbell Drive. The road heads north exiting Homestead and enters unincorporated Miami-Dade county, immediately entering farmland north of Southwest 296th Street, and becoming increasingly rural the further north it journeys.

SR 997 passes through the rural community of Redland, crossing CSX tracks north of Southwest 232nd Street. 6.1 miles (9.8 km) after leaving Homestead, SR 997 forms the western terminus of SR 994 northwest of the remains of Aladdin City. After a few more miles and crossing the Black Creek Canal, SR 997 chicanes to the right, crossing over the Conrad Yelvington branch railroad where it forms the western boundary of the suburban The Hammocks up to its junction with SR 94, the latter's western terminus. Past here, the road enters woodland and is relatively uninterrupted for the next 5 miles (8.0 km), save for the Conrad Yelvington facility, reaching the Tamiami Trail (US 41) at its northern end. After passing the Miccosukee Indian casino and resort, SR 997 has an uninterrupted run north along the boundary of the Everglades, turning northeast after 9 miles (14 km). After crossing the Miami Canal 4.4 miles (7.1 km) later, SR 997 terminates after 0.8 miles (1.3 km) at US 27.

State Road 205 was defined in 1931 to run from Flamingo (now inside Everglades National Park) northeast to State Road 4A (now U.S. Route 1) in Florida City along the Ingraham Highway. There it would run concurrent with US 1 into Homestead (US 1 ran through downtown Florida City and Homestead, instead of the bypass it uses now), splitting onto the existing Krome Avenue to end at State Road 27 (U.S. Route 94, the Tamiami Trail, now U.S. Route 41).

In the 1945 renumbering, the State Road 27 number was assigned to all of the former State Road 205, as well as an extension north to State Road 25 (now U.S. Route 27). The large Everglades National Park was formed in 1947, taking over most of SR 27 southwest from Florida City. Paving of this road, mostly along the old Ingraham Highway, was completed in 1956. The extension north to SR 25 opened in the early 1950s.

In the mid-1960s, State Road 5 (U.S. Route 1) was rerouted onto a bypass of Homestead and Florida City. This removed the concurrency of SR 997 and SR 5/US 1, but the old alignment became State Road 5A and U.S. Route 1 Business until 1968.

The SR 27 designation for Krome Avenue confused many motorists, as the SR 27 designation belonged to the nearby Tamiami Trail (U.S. Route 41) prior to the 1945 renumbering. Tamiami Trail was still labeled as SR 27 on maps for several years following 1945.^[which?] In later decades, motorists confused Krome Avenue for Okeechobee Road, which carried the similarly numbered U.S. Route 27 since 1949.

In 1983, the Florida Department of Transportation renumbered the road as a part of a statewide renumbering and to avoid state road number confusion. The part north of Florida City became State Road 997, which was extended south past the turnoff for the Everglades to merge with U.S. Route 1. The part southwest from Florida City became State Road 9336, and at some point it was extended east two blocks past SR 997 to US 1.