TAM proposes several improvements for the interchange to improve the flow of traffic and make it easier for all users to get to and through this interchange. Proposals range from adding new bus stops, to moving off-ramps, widening the freeway, and building new overcrossings. To gain an important understanding of the interchange area, the study examined the following:

• Existing Infrastructure
• Transit Routes and Intermodal Connectivity
• Weekday AM & PM Peak Period Congestion
• Crash Type and Severity
• Environmental Constraints

Many of the study’s recommended changes will make the interchange easier to use for drivers, bicyclists, pedestrians, and people using public transit. The proposals will also increase safety at the interchanges and on surrounding streets and pathways, allowing for smoother travel to, from, and across Highway 101 and local roads.

The near-term concept focuses on improving transit options. Four new bus stops will be added under the plan, one at each of the on- and off-ramps. A new sidewalk is also proposed on the north side of Sir Francis Drake Boulevard (SFDB) between the US 101 northbound on-ramp and the southbound off-ramp.

The long-term concept focuses on improvements to US 101 between SFDB to the Tamalpais interchange, as well as improving access to the highway. The southbound on-ramp will be widened to two lanes, adding a connector ramp at Wornum Drive. US 101 will also be widened and a new overcrossing will be built at Wornum. Ramp slopes will also be upgraded to meet ADA standards.