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_78 ( built VARCHAR, location VARCHAR, county VARCHAR, listed VARCHAR )

### Question ###
In which year did Blount County build a bridge in Cleveland that was listed on 1981-08-20?

### Accurate SQL ###

SELECT built FROM table_name_78 WHERE county = "blount" AND listed = "1981-08-20" AND location = "cleveland"