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Think traffic on Mopac is bad now?  Imagine adding 30,000 more car trips per day!

Take a minute to consider how building an “Outer Loop” would impact Mopac and the region.

Currently, Mopac functions as a local commuter highway. All of that changes if the southern end of Mopac is connected to FM 1626 and I-35 by way of the proposed “State Highway 45 Southwest.” SH 45 SW, a remnant of TxDOT’s ill-conceived “Outer Loop” around Austin, is the last we thing we need to spend local money on.

Building out SH 45 SW as a non-tolled highway connecting to I-35 would put another 30,000 cars on Mopac every day, according to an estimate from the regional transportation planners.

Linking South Mopac to FM 1626 and I-35 via an “outer loop” around Austin hurts every single current Mopac commuter. Only developers and some commuters in Hays County and long-distance haulers will see any significant benefit. Their gain will be our pain . . . and we get to pay for it!

Making the “loop” on South Mopac means exposing neighborhoods to increased pollution and traffic. Paving the Barton Springs Edwards Aquifer recharge zone. Putting a highway through significant caves and endangered species habitat. Enabling sprawl development that will reduce available water supplies and open space. And robbing limited transportation funds from much higher priority local transportation needs.

Just say No Thank You! to an Outer Loop for Mopac.

Send one message today
to Austin and Travis County officials and tell them to protect Mopac commuters, Mopac corridor neighborhoods, and the Barton Springs Edwards Aquifer. Tell your friends and family to do the same.

Mopac was built for Austin commuters.
Let’s keep it that way!


July 2014 Update

Public Comment / Public Hearing on draft Environmental Impact Statement for 45SW

TxDOT and CTRMA are hosting a public hearing at Bowie High School at 5:00 PM on Tuesday July 29th to take public comment on their draft Environmental Impact Statement for 45SW. Written comments will be accepted through August 13th. Get more details here and please speak out.

News Updates - TxDOT’s current schedule for the 45SW aquifer toll road would have the environmental review and public comment process completed by January / February 2015, with construction beginning in September / October 2015. As explained below, there are plenty of others working to stop this waste of $100 million of taxpayer funds.



Most immediately -- Keep Mopac Local supporters are urged to send an email by  May 9th to CAMPO and other local and state officials urging them to oppose including $100 million for SH 45 SW in the 2015 to 2018 CAMPO funding plan. Go to the TAKE ACTION button to send a single email to the relevant officials.



Tell TxDOT to Study and Build Alternatives to SH 45SW and Proposed Mopac Freeway Intersections

TxDOT and the local toll road authority (“CTRMA”) are pressing ahead with 3 separate environmental studies and required public input processes: one on the proposed 45 SW; one on a proposal to build the freeway main lanes and overpass bridges at Mopac & La Crosse and at Mopac & Slaughter; and the third one on expanding South Mopac north of Slaughter all the way to Cesar Chavez, north of the Colorado River by adding up to two additional tolled lanes in each direction.


South Mopac Neighbors' Alliance

For more information and daily updates, please visit the South Mopac Neighbors' Alliance Facebook page.

In the News

Innovative Solutions Video

Metro Analytics presentation on strategies for improving traffic flow at Mopac and Slaughter.     view larger


Animation showing how SH45 SW will affect the Lady Bird Johnson Wildflower Center and surrounding area.                                    view larger