The bridge inventory data was obtained from Caltrans Structure Maintenance and Investigations (SM&I) Database as of 05/08/2020. SM&I performs bridge inspections in accordance with federal regulations on over 13,201 State Highway bridges and approximately 13,332 bridges owned by local government agencies. Caltrans bridge inspectors are responsible for maintaining the safety and integrity of over 26000 bridges owned by the State of California and California's local government agencies. For more information, please see Caltrans Division of Maintenance, Structure Maintenance & Investigation (SM&I) website at http://www.dot.ca.gov/hq/structur/strmaint/This version utilizes the HST field and displays Historical Significance: 1 = Listed in the National Register of Historic Places.2 = Eligible for listing in the National Register of Historic Places.3 = May be eligible for listing in the National Register of Historic Places.4 = Unevaluated for listing in the National Register of Historic Places.5 = Ineligible for listing on the National Register of Historic Places.