183A Toll Road

The 183A Toll Road or 183A is a controlled-access toll road in the Austin metropolitan area of the U.S. state of Texas. The road includes sections in north Austin, Cedar Park, Leander and Liberty Hill It provides a bypass for U.S. Route 183. The road is owned and operated by the Central Texas Regional Mobility Authority. The 183A Toll road is electronic only and has no cash toll booths. Motorists driving without a toll tag will receive a bill in the mail payable within 30 days. The tolled portion of the highway runs from US 183 near SH-45 to SH-29 In Liberty Hill

Route description

The 183A Toll Road starts in Austin at an interchange with US 183 and SH 45. The freeway runs north to a point near Fenway Park where US 183 turns off to the north-northwest. From that location, the toll road runs to the north through an area composed of residential subdivisions. Near Heritage Park, there is an interchange for Whitestone Boulevard near some commercial developments. Near the interchange with RM 2243, 183A turns to the northwest and ends North of SH 29 in Liberty Hill.

Tolls

Violation fees

If a TxTag holder has a TxTag account with a negative balance, Municipal Services Bureau will mail a separate bill with a higher fee.
Violation fees are fees added to an unpaid pay-by-mail bill. An unpaid bill can accrue up to $60 in fees after 90 days.

Stage of process	Violation fee	Description	Time frame
Toll bill	$0	Tolls + processing fee	0–30 days
1st violation notice	$15	Tolls + processing fee + violation	31–60 days
2nd violation notice	$15	Tolls + processing fee + violation + 2nd violation	61–90 days
Final notice	$30	Tolls + processing fee + violation + 2nd violation + final notice	91–120 days

History

The first section of the toll road opened in March 2007 between RM 620 and RM 1431. As initial traffic was higher than expected, the toll road was extended 5 miles to the north. The Phase II extension opened on April 6, 2012 at a cost of $105 million. The 6.6 mile Phase III extension from Hero Way to north of SH 29 in Liberty Hill has been approved. Construction on Phase 3 began in April 2021, and the roadway opened to traffic on April 9, 2025. It will run on the current alignment of US 183 north of Leander.