Austin Transportation

Highways
Central Austin is essentially bracketed by two major North/South thoroughfares: Interstate 35 to the east and the Mopac Expressway (Loop 1) to the west. U.S. Highway 183 runs from northwest to southeast, and State Highway 71 crosses the southern part of the city from east to west, completing a rough "box" around the central and north-central city. Austin is the largest city in the United States to be served by only one Interstate Highway.

U.S. Highway 290 enters Austin from the east and merges into I-35. Its highway designation continues south on I-35 and then becomes part of Highway 71, continuing on to the west. Highway 290 becomes its own road again southwest of the city, when it splits from Highway 71 in a busy interchange in Oak Hill known as "The Y." Highway 71 continues as far west as Brady, Texas, and Highway 290 continues west to intersect Interstate 10 near Junction. Interstate 35 continues south through San Antonio, and continues to its culmination at Laredo, Texas, which is on the Texas-Mexico border. Interstate 35 is the highway link to the Dallas-Ft. Worth metroplex in northern Texas. There are two links to Houston, Texas (Highway 290 and State Highway 71/Interstate 10). Highway 183 leads northwest of Austin and is a route with other major highways to such cities as Abilene, San Angelo, Lubbock, Amarillo, Albuquerque and Denver.

In the mid-1980s, Austin completed construction on Loop 360, a scenic highway that curves through the hill country from near the 71/Mopac interchange in the south to near the 183/Mopac interchange in the north. The iconic Pennybacker Bridge, also known as the "360 Bridge", crosses Lake Austin to connect north and south Loop 360.

Tollways
In November 2006, Austin opened the first segments of its first-ever tollway system: State Highway 130 runs from just south of Austin-Bergstrom International Airport to Interstate 35 just north of Georgetown. Highway 130 connects with Highway 45 in Pflugerville, Texas. The project, when completed, will end at Interstate 10 just east of Seguin, about 30 miles (48 km) east-northeast of San Antonio.

State Highway 45 runs east-west from just west of Highway 183 in Cedar Park to 130 inside Pflugerville (just east of Round Rock). The project also included a tolled extension to Mopac that allows direct access to I-35. A new southeast leg of Highway 45 has recently been completed, connecting US 183 and the current south end of TX-130 to I-35 at the FM 1327/Creedmoor exit near the south end of Austin and close to the town of Buda's northernmost interchange. The 183A Toll Road opened March 2007, providing a tolled alternative to 183 through the cities of Leander and Cedar Park. Despite the overwhelming initial opposition to the toll road concept when it was first announced, all three toll roads have improved mobility in and around the Austin area and are significantly exceeding their revenue projections.

Airports
Austin's airport is Austin-Bergstrom International Airport (ABIA) (IATA code AUS), located 5 miles (8 km) southeast of the city. The airport is on the site of the former Bergstrom Air Force Base, which was closed in 1993 as part of the Base Realignment and Closure process. Previously, Robert Mueller Municipal Airport was the commercial airport of Austin.

Public transportation
Capital Metropolitan Transportation Authority (Capital Metro) provides public transportation to the city, primarily by bus. Capital Metro is planning to change some routes to "Rapid Lines". The lines will feature 60 ft (18 m) long, train-like high-tech buses. This addition is going to be implemented to help reduce congestion. Capital Metro opened a 32-mile (51 km) commuter rail system known as Capital MetroRail on March 22, 2010.  The system was built on existing freight rail lines and will serve downtown Austin, East Austin, North Central Austin, Northwest Austin, and Leander in its first phase. Future expansion could include a line to Manor and another to Round Rock. Capital Metro is also looking into a circulator system of streetcars to connect most of Downtown, the University of Texas, and the 700-acre (2.8 km2) Mueller Airport Redevelopment. The streetcar system would help connect the new rail line to key destinations in Central Austin. An Amtrak Texas Eagle station is located west of downtown. Segments of the Amtrak route between Austin and San Antonio are under evaluation for a future passenger rail corridor as an alternative to the traffic congestion of Interstate 35. Austin is known as the most bike-friendly city in Texas and has a Silver-level rating from the League of American Bicyclists. Austin is also home to Car2Go, a carsharing program. Austin was chosen as the first city in the western hemisphere to host this company's business, which is based in Germany.