East Topeka Interchange

Clearing up Congestion in the State Capitol

In March 1999, the East Topeka Interchange project was the single biggest project KDOT let to construction at $64.9 million. This project greatly enhanced the flow of traffic for motorists by improving the alignment in east Topeka on the Kansas Turnpike, I-70, K-4, and US-40. It involved connecting K-4 to I-70 and the Kansas Turnpike, constructing two folded diamond interchanges, and building two new toll plaza facilities that have commuter parking areas and automated toll lanes.

A total of 13 bridges and two box bridge extensions were also constructed. All the structures on the interchanges required a total of 2,800 tons (or 5,650,000 pounds) of steel. Other statistics on the interchange include:

The interchange includes two roundabouts, which were the first on the state highway system.