• 07/16/24: We are aware of the smishing scams regarding outstanding toll charges. The Mobility Authority will never ask for personal information via text and only send texts with account updates and to those who have opted in to QR Code Digital Billing and Electronic Invoices. Please do not click on links or respond to any suspicious messages. To get the most up to date information about your Mobility Authority account, visit or call us at (833) 762-8655. The Mobility Authority works diligently to protect our customers’ data.

US 183 Closure to Impact Airport-Bound Traffic

Drivers heading southbound on US 183 will detour at 51st Street

(Austin, Texas) – The Central Texas Regional Mobility Authority (Mobility Authority) will be closing a portion of southbound US 183 between 51st Street and FM 969 (MLK Jr. Boulevard) on Saturday, May 11 from 1 a.m. until 9 a.m. to facilitate roadway construction and pavement operations.

During the closure, traffic on southbound US 183 will be detoured onto westbound 51st Street. To regain access to US 183 southbound, drivers will turn left (south) on Springdale Road then left (east) on FM 969. From there they will be able to turn right (south) back onto US 183 southbound.

The closure is expected to impact drivers heading towards Austin-Bergstrom International Airport on Saturday morning, as well as other drivers heading south on US 183. Drivers using this stretch of southbound US 183 may experience travel delays during this period.

Southbound US 183 Overnight Detour at 51st Street Map


About 183 South:
The Central Texas Regional Mobility Authority is building a new tolled expressway with three lanes in each direction on an eight-mile section of US 183 between US 290 and SH 71. In addition, the Mobility Authority is reconstructing and improving the non-tolled US 183 general purpose lanes and adding $25 million worth of pedestrian and bicyclist facilities. The project will open in phases between 2019 and 2020, offering greater mobility for all users of the corridor. For more information, visit

About the Mobility Authority

The Central Texas Regional Mobility Authority is a local, independent government agency created in 2002 to improve the regional transportation system in Travis and Williamson Counties. The Mobility Authority implements innovative and sustainable transportation options to enhance quality of life and economic vitality in Central Texas. The Mobility Authority operates 183A Toll in Williamson County, 290 Toll and the 71 Toll Lane in east Austin, and the MoPac Express Lane in central Austin. The agency is also finishing construction of the 8-mile 183 South Project in east Austin, the 4-mile SH 45SW toll road between FM 1626 and MoPac, and the 290/130 Flyovers Project to connect SH 130 and 290 Toll. For more information about the Mobility Authority, visit

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