The Corridor Considerations and Potential Routes Map above shows several possible alignments for connecting SR 4 near Brentwood to I-205 or I-580 west of Tracy in San Joaquin County. These options have been developed in consideration of the locations of the existing built environment, naturally occurring resources, and both local and regional development policy within the study area, as well as engineering standards required for safe, modern, and efficient transportation facilities.
The TriLink study is looking at a program of improvements in the corridor, including:
- an airport connector between Vasco Road and the Byron Highway;
- a south link along the Byron Highway from the Byron airport south to I-205 near Tracy;
- a north link from SR-4 south of Brentwood to the Byron Highway north of the airport;
- an I-580 link south from SR-4;
- and a transit link.
None of these elements is currently funded or scheduled for construction. The TriLink study is looking into the feasibility of constructing some or all of these elements over the next forty years.