Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_64 (main_span_feet VARCHAR, name VARCHAR)

### Question ###
What is the Main span of the Qincaobei Bridge

### Accurate SQL ###

SELECT main_span_feet FROM table_name_64 WHERE name = "qincaobei bridge"