Completed in 1974 by the Nello L. Teer Company , it is 1,330 feet ( 405 m ) in length .
Completed in 1974 by the Nello L. Teer Company , it has a top elevation of 266.5 feet ( 81 m ) above mean sea level .
Completed in 1974 by the Nello L. Teer Company , it is 1,330 feet ( 405 m ) in length and has a top elevation of 266.5 feet ( 81 m ) above mean sea level .