NOBLESVILLE, Ind. (THE HAMILTON COUNTY REPORTER) — The Hamilton County Highway Department and Superior Construction Company will close Allisonville Road between 146th Street and Kensington Drive, as well as between 146th Street and Helmsley Court, so crews can begin reconstructing Allisonville Road into a roundabout under 146th Street.

The 90-day closure is scheduled to start on or after Friday, March 1.

It’s all part of a larger plan to convert the current intersection into a grade-separated interchange, with 146th Street going over Allisonville Road.

Bridge Program Engineer Matt Lee emphasized the significance of this closure.

“We know this project will create some inconvenience during construction, but we’re certain the result will be worth the restrictions and closures,” Lee said. “The plan is to have the Allisonville Road reopened in time for Conner Prairie’s Symphony on the Prairie season in June.”

During the closure, crews will start reconstructing Allisonville Road north and south of the intersection, installing storm sewer systems, grading, placing new pavement, and preparing ramps that will carry traffic off the new roundabout to 146th Street. East-west traffic on 146th Street will remain open.

“Motorists will not be able to cross 146th Street,” Highway Director Brad Davis added. “Local residents, however, will still have access to their homes if they’re located within the closure area. They will just need to enter and exit their neighborhoods off Allisonville Road.”

Pedestrian access over the White River bridge will also be unavailable during this time as crews work to finish the bridge widening and install new railings. Motorists are encouraged to utilize the posted detour routes and drive the posted speed limits to ensure the safety of highway crews.

The Highway Department says the overall project is on schedule. It is scheduled to conclude in Summer 2025. For further information and updates on construction progress and lane restrictions, please visit streamline146.com.

News release, map issued Feb. 23, 2024

“LANE RESTRICTIONS – 146th Street and Allisonville Road Project

“Hamilton County, Indiana – Please see below for a schedule of our upcoming 90-day closure of Allisonville Road. Remember, eastbound and westbound 146th Street will not be closed nor will the intersection. We currently utilize lane restrictions, which will still be needed from time-to-time along 146th Street. Allisonville Road between 146th Street and Kensington Drive (north of 146th Street), and between 146th Street and Helmsley Court (south of 146th Street) are the closure limits. The posted detour route will be 131st Street, SR-37, and Greenfield Avenue.

“Thursday, February 29 into Friday, March 1: Our contractor will be completing work in preparation of the upcoming Allisonville Road closure throughout the project limits and along the detour route. At or after midnight, barricades will be put in place along Allisonville Road to close the road for 90 days. Be prepared for lane restrictions or short-duration lane closures along 146th Street after the closure of Allisonville Road is in place, so that the removal of the overhead signal equipment and other work associated with the traffic switch may be completed.

“Friday, March 1 into Saturday, March 2: Between the hours of 9:00pm and 6:00am, 146th Street traffic should be prepared for lane restrictions or short-duration closures to complete any remaining signal equipment removal and other work associated with this traffic switch.

“Please use extreme caution and reduced speeds while driving through this construction zone.

“Hamilton County has 9 townships with approximately 600 miles of roadway and rights-of-way, 335 bridges, and over 600 small structures to maintain. The goal of the Hamilton County Highway Department is to provide and maintain safe, accessible and efficient roadways, and strive to improve the transportation infrastructure for the citizens of Hamilton County.”

Hamilton County, Indiana, Highway Department, based in Noblesville