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SH 45SW is an innovative four-lane toll road to be constructed between MoPac (State Loop 1) and FM 1626 that will feature extensive water quality protection measures, bicycle and pedestrian accommodations and Green Mobility Challenge and context sensitive solutions. Construction of the project commenced in November 2016 and is expected to be completed late 2019.

When SH 45SW construction is complete, it will offer immediate relief to drivers in Hays and southern Travis counties and continue to provide benefit even as the population grows by redirecting commuting traffic off of local roads such as Manchaca Road, Slaughter Lane and Brodie Lane, which will better equip these arterials to serve the surrounding neighborhoods. By using SH 45SW, drivers will save 9 - 17 minutes over local routes to access Austin’s downtown core. Drivers who continue to utilize local routes to access downtown Austin will save 6 - 7 minutes.

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