Case Study
California State Route 91 HOT Express Lanes
California State Route 91 HOT Express Lanes Managed lanes begin as a trend and serve as a worldwide model • Facility is world’s first HOT lanes • Lanes are the first congestion-priced facility • The project was financed through a P3 Born from the need for congestion relief on Orange County’s State Route 91 when no public funds were available, the 91 Express Lanes are the world’s first high-occupancy vehicle toll facility and the first such project to use a public- private partnership financing model. The groundbreaking concept, engineered by HNTB, allows single-occupancy vehicles to use carpool lanes for a fee. Involved in the project from inception, HNTB performed conceptual design, developed preliminary plans and cost estimates, created toll operating concepts, estimated opera