Keystone Parkway (former IN 431)

Keystone Parkway was the last segment of IN 431 to remain IN 431, only being decommissioned in 2007. The road was handed to the city of Carmel.

At I-465, Keystone Avenue transitions into the Keystone Parkway. This was where IN 431 was truncated to when INDOT deleted or diverted all routes inside the I-465 beltway in the 1990s.

After I-465, the Keystone Parkway becomes a freeway. While there are traffic lights at the I-465 junction, traffic going to and from the north to I-465 doesn't encounter any of them. 

Municipal-style signage that normally wouldn't fly on an INDOT road.

The Keystone Parkway ends at US 31.

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