First identified in 1959, SR-239 is a legislatively approved, but unconstructed route in the California state highway system. SR-239 is a potential multimodal link between SR-4 near Brentwood and I-205 west of Tracy in San Joaquin County. The route has not been adopted by the California Transportation Commission (CTC); however, Contra Costa County was awarded $14 million for initial study and planning under SAFETEA-LU in 2005. Administration of the study, now called TriLink, was transferred to the Contra Costa Transportation Authority (CCTA) in January 2012.
The TriLink study is exploring the possibility of creating a high quality transportation link from Brentwood to the I-580/205 corridor near Tracy. TriLink is looking at transportation improvements along four study corridors:
- A North Link along Vasco Road
- An Airport Connector Link to Byron Airport
- A South Link along the Byron Highway
- A Link to I-580
The comment period for the SR‐239 Tri‐link Draft Final Report continues until Friday May 23, 2014. A redline version showing changes to the September 2013 Draft Report (made public last fall) is available for your review at the link below. Also provided as separate documents are comments received through the vetting process, our study team’s responses to those comments, and an executive summary of the report.
Retrieve the Draft Final Report, matrix of comments and responses, original comments, and executive summary here. If you have not already done so, please submit your comments in writing to firstname.lastname@example.org email@example.com.
At the end of May, the Final Report will be released to the public, marking the completion of the feasibility study. The momentum of the TriLink study will be carried forward to the next phase through the preparation of a Project Study Report.