The I-805 HOV/Carroll Canyon Road Extension Project included the extension of Carroll Canyon Road under I-805, construction of two miles of High Occupancy Vehicle (HOV) lanes in each direction along I-805 from I-5 to Carroll Canyon Road, and construction of a northerly Direct Access Ramp from the Carroll Canyon Road Extension to the HOV lanes. This project completed a continuous 10-mile HOV lane in each direction from Mira Mesa Boulevard on I-805 to Manchester Avenue on I-5.
The project opened to traffic in April 2014.