SEO is located south of Caldwell, Ohio on state route 821 (Marietta Road).
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Take the Caldwell/Woodsfield exit #25 off interstate 77.
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Turn eastbound onto state route 78 and proceed to the second light.
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Turn right (south) onto state route 821 (Marietta Road).
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Go 4 - 5 miles on 821 and you will see SEO on your left.