The County Administrative Center is located in downtown Riverside at 4080 Lemon Street. 

A map can be viewed by clicking the link on the right side of this page. Written instruction are included below. 

From the 91W:
Exit Mission
Turn Right on Mission.
Turn Left on Lime Street. 

From the 91E:
Exit 14th Street. 
Turn Left onto 14th Street
Turn Right onto Lime Street

Parking:
 If you are a current County Employee and have a parking sticker for the Employee lots you can park on Lime Street and access the building.  If you do not have a parking sticker, you can park in the parking garages on Lemon Street at your own expense.  The instructions are for the Employee parking lots.  The lots are located between 12th Street and 9th Street.