California State Route 73

State Route 73 begins in northern San Juan Capistrano near the Mission Viejo border at an interchange with Interstate 5. The freeway heads northwest into the city of Laguna Niguel before the tolled portion begins at the Greenfield Drive exit. After passing Greenfield Drive, SR 73 enters into the city of Aliso Viejo before entering Laguna Beach, where SR 73 has an interchange with SR 133. Following this, the road passes through Crystal Cove State Park, where the main toll plazas are located. After leaving the state park, SR 73 straddles the border between Irvine and Newport Beach and provides easy access to University of California, Irvine through the Bison Avenue exit. Following the MacArthur Boulevard exit, the tolled part of the road ends and becomes a freeway. SR 73 continues into Newport Beach, running along the southern boundary of Orange County John Wayne Airport (IATA Airport Code SNA). Entering Costa Mesa, SR 73 interchanges with SR 55 before ending at I-405.[2]

State Route 73 is part of the California Freeway and Expressway System,[3] and is part of the National Highway System,[4] a network of highways that are considered essential to the country's economy, defense, and mobility by the Federal Highway Administration.[5]

California State Route 73 climbs into the San Joaquin Hills, as seen looking southward from University Hills in Irvine. In the foreground is the Bonita Canyon Drive exit.

Most of State Route 73 is a limited-access toll highway designed to reduce congestion within Orange County on the Pacific Coast Highway (State Route 1) and the San Diego Freeway (Interstates 5, and 405) by providing a direct route through the San Joaquin Hills.

State Route 73 is not a toll road over its entire length. From its northbound terminus heading southbound, the first three miles (4.8 km) of State Route 73 have no tolls and make up the entire Corona Del Mar Freeway. State Route 73's previous alignment had the freeway portion end at MacArthur Boulevard, and the SR 73 designation ran along MacArthur south to meet Route 1 in Corona del Mar. Under the current alignment, heading southbound, State Route 73 becomes a designated toll road immediately after the Jamboree/MacArthur ramp and remains so until its southern terminus at I-5. Though the next ramp heading southbound (Bison Avenue) is part of the toll road, it is toll-free, as is the first ramp heading northbound from the southern terminus (Greenfield Drive).

Design and construction of the highway cost a total of $800 million. The design and construction was overseen by the San Joaquin Hills Transportation Corridor Agencies, or SJHTCA, an agency formed in 1988[6] for the express purpose of designing the tollway. In the end, State Route 73 included 10 interchanges, 68 bridges, 725,000 square feet (67,400 m²) of retaining walls, and 32 million cubic yards (24,000,000 m³) of excavation at completion. Construction was divided into four different sections, each with its own management system and quality control. A joint venture led by Kiewit Pacific Co., a subsidiary of Kiewit Corporation, completed this project in 1996.

State Route 73's toll road was the first to be financed with tax-exempt bonds on a stand-alone basis including construction and environmental risk. In 2011, $2.1 billion in debt for the San Joaquin Hills toll roads was restructured, which pushed back the time until the bonds are paid off and the route becomes a state-owned freeway to 2042.[7] In 2014, the debt was again restructured in an attempt to get improved interest rates, improved debt ratings,[8] and in the process save $44 million in debt repayment. This resulted in another 8 years of payments, delaying the pay-off date to 2050.[9] Under this new plan the debt can be paid off earlier than 2050, if ridership and revenue improves.[8]

The tolled portion of SR 73 (beginning after Greenfield Drive in the northbound direction, and starting after the Bison Avenue exit in the southbound direction) employs a barrier toll system, where drivers are charged flat-rate tolls based on what particular toll booths they pass through. Since May 13, 2014, the road has been using an all-electronic, open road tolling system,[10] and on October 2, 2019, the license plate tolling program, under the brand name "ExpressAccount", was discontinued.[11] Drivers may still pay using the FasTrak electronic toll collection system, via a one time payment online, or in person at Transportation Corridor Agencies's customer service center in Irvine. Those using Fastrak are charged a lower toll than those using the other two methods. Drivers must pay within 5 days after their trip on the toll road or they will be assessed a toll violation.[12]

Drivers who drive the entire tolled segment of SR 73 will only encounter one gantry, the Catalina View Mainline toll gantry. As of July 2019, the gantry uses a congestion pricing scheme based on the time of day for FasTrak users, while non-FasTrak drivers must pay the maximum toll for peak weekday hours ($8.65 for the standard two-axle car), regardless of the day and time. Tolls are also collected at a flat rate at the northbound exits and southbound entrances of La Paz Road ($2.50), Aliso Creek Road ($3.11), and SR 133 ($3.76); and at the southbound exits and northbound entrances of Newport Coast Drive ($3.50) and Bonita Canyon Drive ($2.12).[13]

Except where prefixed with a letter, postmiles were measured on the road as it was when the route was established, based on the alignment that existed at the time, and do not necessarily reflect current mileage. R reflects a realignment in the route since then, M indicates a second realignment, L refers an overlap due to a correction or change, and T indicates postmiles classified as temporary (for a full list of prefixes, see the list of postmile definitions).[1] Segments that remain unconstructed or have been relinquished to local control may be omitted. The entire route is in Orange County.

Location	Postmile [1][14][15]	Exit [16]	Destinations	Notes
San Juan Capistrano	10.00	–	I-5 south (San Diego Freeway) – San Diego	Southern terminus of SR 73; exit 85A on I-5 north
Laguna Niguel–Laguna Hills line	11.76	2	Greenfield Drive	Southern end of toll road
Aliso Viejo	12.91	3	Moulton Parkway	Southbound exit and northbound entrance
	13.40	3	La Paz Road	Tolled northbound exit and southbound entrance
	14.39	4	Aliso Creek Road	Tolled northbound exit and southbound entrance
	15.25	5	Pacific Park Drive / Glenwood Drive	Southbound exit and northbound entrance
Aliso Viejo–Laguna Beach line	16.25– 16.75	6	SR 133 (Laguna Canyon Road) / CR S18 (El Toro Road) – Aliso Viejo, Laguna Beach, Riverside	Tolled northbound exit and southbound entrance; signed as exit 7 southbound
San Joaquin Hills	18.70	Catalina View Mainline toll gantry
Irvine–Newport Beach line	21.43	11	Newport Coast Drive	Tolled southbound exit and northbound entrance
	22.45	12	Bonita Canyon Drive	Tolled southbound exit and northbound entrance
	23.46	13	Bison Avenue
	23.82	14	MacArthur Boulevard north – John Wayne Airport	No southbound exit; northern end of toll road
Newport Beach	23.82	14A	MacArthur Boulevard south – Newport Beach	Southbound exit and northbound entrance; former routing of SR 73 south
	24.36	14B	University Drive	Southbound exit and northbound entrance
	R24.78	15	Jamboree Road	No northbound exit
	R25.45		Birch Street	Northbound exit and southbound entrance
	R25.58	16	Campus Drive / Irvine Avenue	Southbound exit and northbound entrance
Costa Mesa	R26.58	17A	SR 55 north (Costa Mesa Freeway)	Northbound exit and southbound entrance; exit 5A on SR 55
	R26.58	17B	SR 55 south (Costa Mesa Freeway)	Signed as exit 17A southbound; exit 5A on SR 55
	R27.28	17C	Bear Street	Signed as exit 17B southbound
	R27.81	18B	I-405 north (San Diego Freeway) – Long Beach	Northern terminus of SR 73; exit 10 on I-405 south
	28.00	18A	Fairview Road	Northbound exit and southbound entrance
	​	18C	Harbor Boulevard / Susan Street	Northbound exit only
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Electronic toll collection       Incomplete access

•  California Roads portal

Wikimedia Commons has media related to California State Route 73.

• Transportation Corridor Agencies
• Project Description at Kiewit
• California @ AARoads.com - State Route 73
• Caltrans: Route 73 highway conditions
• California Highways: SR 73