Highway Route Markers: Even numbers indicate east-west interstate routes while odd numbers indicate north-south routes. Interstate highways identified by a three-digit number are usually alternate or bypass routes. Which of the following is an east-west route?

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Highway Route Markers: Even numbers indicate east-west interstate routes while odd numbers indicate north-south routes. Interstate highways identified by a three-digit number are usually alternate or bypass routes. Which of the following is an east-west route?