Alexander Ralston's Grid

Alexander Ralston carried one credential above all others when Indiana hired him to design its new capital in eighteen twenty-one. He had worked alongside Pierre Charles L'Enfant on the plan for Washington, District of Columbia, the city of diagonal boulevards radiating from ceremonial circles. When Indiana needed a capital, Ralston reached into that same imagination.

His plan for Indianapolis centered on a one-mile square, bounded by streets he named North, South, East, and West. Inside that square, he drew a grid of blocks, then cut four diagonal avenues through it, radiating outward from a central circle. He named the avenues after states: Massachusetts, Virginia, Kentucky, Indiana. The circle, three acres at the geometric heart of everything, he designated for the Governor's residence. The Governor never came. A brick Governor's House was eventually built on the circle, but it served as state offices until it was torn down in eighteen fifty seven, and the circle later became the site of the Soldiers and Sailors Monument, dedicated in nineteen oh two.

Ralston doubted Indianapolis would ever outgrow his Mile Square. He platted one square mile because he couldn't imagine more being needed. The settlement in eighteen twenty-one consisted of several dozen families in a clearing. The state capital didn't move there officially until eighteen twenty-five, and the first years were hard enough that some legislators lobbied to relocate it elsewhere. The river that was supposed to power the new city's mills turned out to be too shallow.

None of that mattered in the long term. The Mile Square survived and became the permanent core of a city of nearly nine hundred thousand. Ralston's grid still organizes downtown Indianapolis. The diagonal avenues still cut through his blocks at angles that confound newcomers. Monument Circle still sits where he put the governor who never came.