What unit of length is being used for the route with "replaced by us 81" in their remarks section?
CREATE TABLE table_11336756_6 (length VARCHAR, remarks VARCHAR)
SELECT length FROM table_11336756_6 WHERE remarks = "Replaced by US 81"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_11336756_6 (length VARCHAR, remarks VARCHAR) Question: What unit of length is being used for the route with "replaced by us 81" in their remarks section? [/INST] SELECT length FROM table_11336756_6 WHERE remarks = "Replaced by US 81" </s>