Indiana is full of many hidden treasure from the shores of Lake Michigan to the banks of the Ohio River. One of them is a little known train trestle in southern Indiana, southwest of Bloomington in Greene County. But “little” is the last word that should describe the Greene County Viaduct, affectionately known as “Tulip Trestle”. I first heard about Tulip Trestle some 15 years ago when a car club I was in made a trip to view the 2295 foot long structure. Tulip Trestle was completed in 1906 at a cost of $246,000, or over $6 million in today’s dollars. It was built by the New York Bridge Company using mainly…