Дорога SR 112: от аэропорта Майами до Майами-Бич

Highway in Florida

State Road 112 (SR 112) is a 9.9 mile (16 km) east–west state highway connecting Miami International Airport in Miami to Miami Beach in the U. S. state of Florida. Between the airport and Interstate 95, it is locally known as the Airport Expressway (or the Airport Tollway), and is a controlled access toll road between SR 9 and I 95. Between I 95 and Alton Road (SR 907A) in Miami Beach, SR 112 is signed only as Interstate 195 as it crosses Biscayne Bay by way of the Julia Tuttle Causeway. Between I 195 and its eastern terminus at Collins Avenue (SR A1A), the SR 112 signs are present but infrequent, and the road is locally maintained as Arthur Godfrey Road.

SR 112 begins at the main entrance of Miami International Airport, at the intersection of NW 21st Street and State Road 953 (Le Jeune Road), and heads north. From here until the interchange with I 95, the road is known as the Airport Expressway and is maintained by the Greater Miami Expressway Agency (GMX). For its first mile or so, the road runs parallel to SR 953 and an airport runway, with its lanes featuring a divided left hand driving direction. About 0.5 mile (1 km) north of the southern terminus, SR 112 features an at grade railroad crossing, near the eastern end of one of the airport's runways. The road swings to its main east west orientation past the airport, with its lanes crossing to a normal driving direction just to the east of its partial interchange with SR 948, which also provides limited access to U. S. Route 27. After crossing NW 37th Avenue, the Airport Expressway passes through its first of two toll gantries, charging $0.35 for vehicles with SunPass transponders and $0.70 for the remaining Toll by Plate users. It also runs roughly parallel to the Metrorail Orange Line, crossing under it just west of NW 32nd Avenue. SR 112 then interchanges with SR 9 (NW 27th Avenue), and then NW 22nd Avenue half a mile later. From here, the expressway passes through the second toll gantry (at the location of the former toll plaza), charging the same rates as the first gantry. Near this gantry, SR 112 passes the southern side of the Earlington Heights Metrorail station, where the two lines of the Metrorail system merge, with both the Airport Expressway and the Metro continuing to run parallel eastwards for another 1 mile (2 km) or so. Just before SR 112's partial interchange with SR 933 (NW 12th Avenue), the Metrorail tracks cross over the Airport Expressway as they curve southwards. About 0.5 mile (1 km) later, the Airport Expressway ends at the stack interchange with I 95 (alternatively known as the 36th Street Interchange), with SR 112 and the pavement continuing eastwards as Interstate 195.

On December 23, 1961, three signed roads along the route of SR 112 were opened: the 36th Street Tollway, Interstate 195, and Spur Interstate 195. I 195 Spur was the surface portion of the east–west state route along Arthur Godfrey Road in Miami Beach, connecting I 195's eastern terminus to SR A1A. The I 195 Spur signs disappeared from the road shortly after the designation was decommissioned by the newly formed United States Department of Transportation in the late 1960s, and is now signed solely (but scarcely) as SR 112.

While repeated attempts to secure funding for extending SR 112 along SR 948 to the Palmetto Expressway and the Homestead Extension of Florida's Turnpike have failed, the Florida Department of Transportation is constructing a connector between the Dolphin Expressway and the Airport Expressway as part of a massive project (the Miami Intermodal Center) tying together expressways, rail lines, and the airport. It remains to be seen if the connector will have its own FDOT designation or if the SR 112 will be extended over it to connect the Miami area's two primary east–west expressways.

All exits not concurrent with I 195 are unnumbered.