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SH 45SW is an innovative environmentally sensitive four-lane toll road being constructed between State Loop 1 (MoPac) and FM 1626 that will include extensive water quality protection measures and bicycle and pedestrian facilities. Construction of the project commenced in November 2016 and is expected to be completed in 2019.

The SH 45SW toll road will offer drivers an alternative to congested neighborhood streets like Manchaca Road, Slaughter Lane and Brodie Lane. The new expressway will also help reduce congestion on those roads. Drivers who choose to use SH 45SW can expect to save 9 - 17 minutes over driving local routes to reach Central Austin. Drivers who continue to utilize local roads will save 6 - 7 minutes over current travel times.

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