Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_87 (crest_length__meters_ VARCHAR, year_of_construction VARCHAR, name VARCHAR)
### Question:
Tell me the total number of crest length for year construction larger than 1957 for mattmark
### Answer:
SELECT COUNT(crest_length__meters_) FROM table_name_87 WHERE year_of_construction > 1957 AND name = "mattmark"