A study to map out a streetcar route linking Sacramento to West Sacramento is expected to start this fall, according to city Transportation Department spokeswoman Linda Tucker. More than $400,000 in funding has been set aside for the study -- $310,000 from federal grant funds obtained earlier this year and $90,000 from local transportation funds, said Azadeh Doherty, a principal planner in the department. The current plan for the streetcar includes a path in West Sacramento, but does not lay out a route in Sacramento. Under the most recent plan, the streetcar would run from West Sacramento City Hall, across Tower Bridge and stop in Old Sacramento at the foot of the bridge. The city will