Hamilton County completes 146th/Allisonville interchange; awards $39.9M contract for 146th/Hazel Dell project
Hamilton County held a ribbon-cutting on Sept. 14, 2026, for the new 146th Street and Allisonville Road grade-separated interchange and on the same day awarded a $39.9 million contract to Carmel-based Gradex for a planned 146th Street and Hazel Dell Parkway interchange, with work set to start in fall 2026 and continue into 2029.
Hamilton County officials held a ribbon-cutting Sept. 14, 2026, for the 146th Street and Allisonville Road interchange. The new grade-separated configuration — which includes a roundabout on Allisonville Road beneath 146th Street — had been open to traffic for several months while crews completed paving and landscaping over the summer.
At their Sept. 14, 2026 meeting the Hamilton County Commissioners awarded a $39.9 million contract to Carmel-based Gradex for a grade-separated interchange at 146th Street and Hazel Dell Parkway. County officials said work will begin in fall 2026 and continue into 2029; the project is described as intended to improve safety, traffic flow and level of service along the 146th Street corridor.
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