Total estimated project cost is ,427,000 for capital and support.
The scope as described for the preferred alternative is consistent with the project scope programmed by the Commission in the 2010 State Highway Operation and Protection Program. The age of the existing bridge at this location makes it eligible for the National and California historic registers.
The signed Route 9, as LRN 114, proceeded North on Saratoga-Sunnyvale Road into Sunnyvale via Mathilda Ave, thence to a jct with Alviso-Milpitas Road (currently signed as Route 237), and a junction with Bypass US-101 (LRN 68). On October 18, 1956, the Highway Commission adopted the routing for a future freeway location for Route 9 from Bayshore Freeway north of Moffett Field, generally following Stevens Creek to an existing Route 9 location north of Azule near Saratoga. The route signed as Route 9 then proceeded on the current Route 237 alignment into Milpitas. It ran east as Route 237 to Route 17 (LRN 69; now I-880).
Before the current bridge over the Guadalupe River was constructed, it took a route into Alviso via Gold Street north and 1st Street southwest back to current Route 237.
In 1963, this was defined to run "from Route 17 near Santa Cruz to Route 17 near Los Gatos via Waterman Gap and Saratoga Gap and along the ridge between the San Lorenzo and Pescadero Creeks." In 1981, Chapter 292 changed the western origin to Route 1 near Santa Cruz.The name derives from the western terminus of the segment in the City of Santa Monica.