Texas State Highway 45
State Highway 45 | ||||
|---|---|---|---|---|
| Route information | ||||
| Length | 25.024 mi (40.272 km) | |||
| Existed | 1985–present | |||
| Eastern segment | ||||
| Counterclockwise end | US 183 / 183A Toll Road / RM 620 in Austin | |||
| Major intersections | Loop 1 Toll near Round Rock I-35 in Round Rock SH 130 Toll in Pflugerville US 290 / 290 Toll Road in Austin SH 71 near Austin SH 130 Toll / US 183 in Mustang Ridge | |||
| Clockwise end | I-35 in Austin | |||
| Southwestern segment | ||||
| Counterclockwise end | FM 1626 in Austin | |||
| Major intersections | Loop 1 in Austin | |||
| Clockwise end | RM 1826 in Austin | |||
| Location | ||||
| Country | United States | |||
| State | Texas | |||
| Counties | Hays, Travis, Williamson | |||
| Highway system | ||||
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State Highway 45 is a freeway loop around Austin, Texas, that exists in two open segments. The official designation of SH 45 is such to form a complete loop around Austin, a distance of roughly 80 miles (130 km).
One segment is in southwest Austin and runs southeast from Ranch to Market Road 1826 to Farm to Market Road 1626 and intersects the southern terminus of Loop 1 (Mopac Expressway). Between RM 1826 and Loop 1, the roadway is a divided four-lane facility with a wide median intended to accommodate a future freeway, after which the current lanes would serve as frontage roads. Between Loop 1 and FM 1626, the roadway becomes a tolled freeway.
The other segment is a toll road that forms a backwards C-shape along the boundary of Travis and Williamson County before bending down along the eastern edge of the Austin metropolitan area where it shares its route with SH-130.