183A Toll Road

Not to be confused with Texas State Highway 183 Express or North Tarrant Express.

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^[2] 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

183A Toll Road
183A highlighted in red; Currently outdated with new extension to TX 29
Route information
Maintained by CTRMA
Length	13.2 mi[1] (21.2 km)
Existed	2007–present
Major junctions
South end	US 183 / SH 45 Toll / RM 620 in Cedar Park
Major intersections	RM 1431 in Cedar Park RM 2243 in Leander US 183 in Leander
North end	SH 29 in Liberty Hill
Location
Country	United States
State	Texas
Counties	Williamson
Highway system
Highways in Texas Interstate US State Former Toll Loops Spurs FM/RM Park Rec

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.^[3]

Tolls

183A Toll Road Park Street mainline toll plaza

Toll locations and rates for passenger cars^[4]

Toll plaza	Pay by mail toll	TxTag toll
Lakeline Mainline Plaza	$0.86	$0.57
Park Street Mainline Plaza	$2.91	$1.94
Brushy Creek Ramps	$0.72	$0.55
Scottsdale Ramps	$1.64	$1.11
Crystal Falls Mainline	$1.43	$2.15
Crystal Falls Ramps	$0.65	$0.44
San Gabriel Mainline	$1.09	$1.64
San Gabriel Ramps	$0.76	$1.14
South Whitewing Ramps	$0.76	$1.14
Whitewing Mainline	$1.29	$1.94
North Whitewing Ramps	$1.02	$1.53

Violation fees

If a TxTag holder (or customer of any other acceptable toll-tag) has a TxTag account with a negative balance, Municipal Services Bureau (MSB) will mail a separate bill with a higher fee.^[5]

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.

Toll violation process

Stage of process	Violation fee	Description	Time frame
Toll bill	$0	Tolls + processing fee (tolls + $1)	0–30 days
1st violation notice	$15	Tolls + processing fee + violation (tolls + $16)	31–60 days
2nd violation notice	$15	Tolls + processing fee + violation + 2nd violation (tolls + $31)	61–90 days
Final notice	$30	Tolls + processing fee + violation + 2nd violation + final notice (tolls + $61)	91–120 days

History

The first section of the toll road opened in March 2007 between RM 620 and RM 1431.^[6] 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.^[7] The 6.6 mile Phase III extension from Hero Way to north of SH 29 in Liberty Hill has been approved.^[8] Construction on Phase 3 began in April 2021, and the roadway opened to traffic on April 9, 2025.^[9] It will run on the current alignment of US 183 north of Leander.

Exit list

The entire route is in Williamson County. All exits are unnumbered.

Location	mi	km	Destinations	Notes
Austin	0.0	0.0	US 183 south / SH 45 Toll west / RM 620 east	Southbound exit and northbound entrance
	0.4	0.64	US 183 north / Lakeline Mall Drive	Northbound exit only; last exit before toll plaza; southbound US 183 entrance is from Lakeline Boulevard
Cedar Park			Northbound toll plaza
	0.9	1.4	Lakeline Boulevard	Southbound exit is via Avery Ranch Boulevard; last free exit
			Southbound toll plaza
	1.4	2.3	US 183 / Avery Ranch Boulevard	Northern end of US 183 concurrency
	2.7	4.3	Brushy Creek Road / Cypress Creek Road
			Toll plaza
	4.3	6.9	RM 1431 (Whitestone Boulevard) – Round Rock, Cedar Park	No direct southbound exit (signed at New Hope Drive); access to Cedar Park Regional Medical Center
	5.1	8.2	New Hope Drive
	6.1	9.8	Scottsdale Drive	Direct northbound exit only (southbound exit signed at Crystal Falls Parkway)
			Toll plaza
	7.1	11.4	Crystal Falls Parkway
Leander	8.5	13.7	RM 2243
	8.9	14.3	Hero Way	Direct southbound exit and northbound entrance
	9.9	15.9	San Gabriel Parkway	Former north end of tollway; opened on April 9, 2025
			Toll plaza
	10.7	17.2	US 183 south / Bryson Ridge Trail	Opened on April 9, 2025
	12.3	19.8	Whitewing Drive / Larkspur Park Boulevard	Opened on April 9, 2025
​			Toll plaza
Liberty Hill	13.2	21.2	US 183 north / SH 29 – Burnet, Georgetown	Opened on April 9, 2025
Liberty Hill	16	26	US 183 north / CR 258 – Lampasas	Northern Terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus       Incomplete access