Florida State Road 112
|This article needs additional citations for verification. (October 2007)|
|Maintained by MDX and FDOT|
|Length:||9.856 mi (15.862 km)|
|Existed:||December 23, 1961 – present|
|West end:||Miami International Airport|
|I‑95 in Miami|
|East end:||SR A1A in Miami Beach|
State Road 112 (SR 112) is an 9.9-mile-long (15.9 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, and is an all electronic toll road between State Road 9 to I-95. Between Interstate 95 and Alton Road (SR 907A) in Miami Beach, SR 112 is signed only as Interstate 195 as it crosses Biscayne Bay on the Julia Tuttle Causeway. Between I-195 and its eastern terminus at Collins Avenue (SR A1A), the SR 112 signs are present but infrequent.
State Road 112 begins at the main entrance of Miami International Airport, at the intersection of NW 21st Street and State Road 953, and heads north. From here until the interchange with I-95, the road is known as the Airport Expressway and is maintained by the Miami-Dade Expressway Authority. For its first mile or so, the road runs adjacent to SR 953 to its west of SR 953, with its lanes featuring a divided left-hand driving direction. About half a mile 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; this interchange also provides limited access to US 27.
After crossing NW 37th Avenue, the Airport Expressway passes through its first of two toll gantries, charging $0.35 for SunPass users and $0.70 for 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, also charging $0.35 for SunPass users and $0.70 for Toll By Plate user. It is also just past here that 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 the next mile 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. Half a mile later, the Airport Expressway ends at the stack interchange with Interstate 95, with SR 112 and the pavement continuing eastwards as Interstate 195.
The 4.424-mile-long (7.120 km) section of SR 112 connecting Interstate 95 in the west with Miami Beach in the east is also designated as I-195. This portion of the route is signed as I-195, with SR 112 becoming an unsigned highway. I-195 and SR 112 cross Biscayne Bay by traveling over the Julia Tuttle Causeway. Past Alton Road (SR 907), I-195 terminates while SR 112 continues east as Arthur Godfrey Road.
East of Interstate 195, State Road 112 continues as the palm-lined Arthur Godfrey Drive (also known as West 41st Street), an undivided 0.82-mile-long (1.32 km) four-lane road. It passes through the southern end of Nautilus, past shops and low-rise office buildings, crossing a canal before passing along the southern edge of North Beach Elementary School. Continuing past more shops and a hotel, SR 112 crosses another canal before immediately meeting the southbound half of SR A1A. Past here, the road becomes one land in each direction and meets the northbound half of SR A1A one block later, terminating amidst the high-rises of Mid-Beach Miami Beach. 41st Street continues on a short distance into a cul-de-sac.
Tolls on the Airport Expressway are all electronic, and does not accept cash. Payment is done either via SunPass transponders or via toll-by-plate billing, the latter of which charges double of the former. Two toll gantries are located along the expressway portion of the road, each charging $0.35 for SunPass users and $0.70 for Toll By Plate users. As of November 15, 2014, it costs $0.70 to travel the entire expressway portion via SunPass and $1.40 via Toll By Plate. All motorists are charged at least one toll for using the road; there are no "free sections" as existed prior to the electronic toll conversion in 2014.
Construction of SR 112 began in 1959, and the expressway was opened to traffic on December 23, 1961 (six months after the Palmetto Expressway, SR 826). Its initial name was the 36th Street Tollway, but use of the name eventually faded in favor of the more popular Airport Expressway. Initially the toll road had its western terminus at the congested intersection with LeJeune Road (SR 953), Northwest 36th Street (SR 948), and Okeechobee Road (US 27/SR 25) just east of the airport.
The westbound toll booths were removed in March 1984.
In 1990, SR 112 was extended southward and westward onto the airport property, ending at the airport's main entrance.
The numbering of SR 112 is an anomaly in the current grid-based system. The road was assigned its number while it was in its planning stages; it retained the number as FDOT made widespread changes in the numbering of State Roads in southeastern Florida in the 1970s and early 1980s.
On November 15, 2014, the Airport Expressway became an all electronic toll road, no longer collecting cash, and the only ways to pay are either by the SunPass transponders or billing by the toll-by-plate program, at double the cost of SunPass users. This also eliminated all "free movement" sections of the tolled section of SR 112, and restored tolls westbound. The move was first announced in 2010, and along with the nearby Dolphin Expressway, was the last of the MDX expressways to be converted to open road tolling.
Spur Interstate 195
On December 23, 1961, three signed roads along the route of SR 112 were opened: the 36th Street Tollway (now the Airport Expressway), Interstate 195, and Spur Interstate 195. Spur Interstate 195 was the surface portion of the east–west state route along Arthur Godfrey Boulevard in Miami Beach, connecting I-195's eastern terminus to SR A1A. The Spur I-195 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 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.
The entire route is in Miami-Dade County.
|0.000||0.000||Miami International Airport|
|Miami Springs||0.85||1.37||SR 953 south (Le Jeune Road) – Rental Car Center, Cell Phone Lot||Westbound exit and eastbound entrance|
|1.013||1.630||Le Jeune Road north (SR 953) / Northwest 36th Street west (SR 948)||Westbound exit and eastbound entrance|
|Hialeah||1.15||1.85||US 27 north (Okeechobee Road / SR 25)||Westbound exit and eastbound entrance|
|1||2||Toll gantry ($0.35 SunPass, $0.70 Toll By Plate)|
|2.464||3.965||SR 9 (Northwest 27th Avenue)|
|2.982||4.799||Northwest 22nd Avenue – Metrorail|
|Miami||3.46||5.57||Northwest 17th Avenue||Westbound exit only|
|3.647||5.869||Toll gantry ($0.35 SunPass, $0.70 Toll By Plate)|
|4.017||6.465||Northwest 12th Avenue (SR 933) – MDC Medical Campus||Eastbound exit only|
|4.618||7.432||I‑95 (SR 9A) / Express Lanes – Downtown Miami, Fort Lauderdale, Orlando||west end of I-195 overlap; signed westbound as exit 1; I-95 exit 4|
|Miami Beach||9.042||14.552||SR 907A (Alton Road)||at-grade intersection; east end of I-195 overlap|
|9.800||15.772||SR A1A (Indian Creek Drive)||carries only southbound SR A1A, but traffic can turn left from SR 112 east to reach northbound SR A1A|
|9.856||15.862||SR A1A north (Collins Avenue)|
|1.000 mi = 1.609 km; 1.000 km = 0.621 mi
- FDOT straight line diagrams, accessed March 2014
- Google (June 8, 2009). "map of SR 112, with State Road 112 on the left". Google Maps. Google. Retrieved June 8, 2009.
- "5526 MDX Rate Card 112" (PDF). Miami-Dade Expressway Authority. Retrieved March 1, 2013.
- Map of State Road 112 (Map). MapQuest, Inc. 2009. Retrieved 2012-07-22.
- Google (July 22, 2012). "Florida State Road 112". Google Maps. Google. Retrieved July 22, 2012.
- Chardy, Alfonso. "Cash tolls on Miami-Dade expressways will soon be electronic". Miami Herald 23 Mar 2010.
- All Electronic Toll Collection Starts November 15 on SR 836 and SR 112
- "Florida Department of Transportation Interchange Report" (PDF). Florida Department of Transportation. 2008-11-24. pp. 10, 14. Retrieved 2009-07-27.