What is the final interchange design and why was it chosen?
It is INDOT’s determination that among the alternatives that meet the project purpose and need, Alternative 4c provided the best balance of meeting safety and mobility needs while minimizing or potentially eliminating the need for retaining walls along the legs of the interchange. Alternative 4c does not include added through lanes on the interstates.
When will construction begin?
Preliminary work has already begun, but the most significant construction is scheduled to occur in 2021 and 2022.
How long will the North Split interchange be under construction?
Due to the magnitude of the project, two construction seasons (2021 and 2022) will be required to complete the work.
Will crews work overnight?
For work occurring during winter and spring, crews will work overnight (10 p.m. to 5 a.m.) whenever possible to reduce impacts to traffic and causing congestion. Once the next phase of construction begins in May and the interstates through the North Split interchange are closed, crews will work 24 hours a day.
Will any ramps close permanently after construction?
Yes. To reduce the impact of the project on adjacent historic neighborhoods, two movements currently served by the North Split will be eliminated:
- I-70 traffic from the east will no longer have access to the Pennsylvania Street exit ramp.
- The Delaware Street entrance ramp traffic will have no access to I-65 southbound or the collector-distributor (C-D) road serving North Street, Michigan Street, Ohio Street and Fletcher Avenue. Access from Delaware Street to I-70 eastbound will be maintained.
What improvements will be made to local streets in the project area?
The Aesthetic Design Guidelines developed during the Context Sensitive Solutions (CSS) public outreach process and the environmental study phase outlined many changes to local streets within the project area. In addition to being newer, safer and quieter, the underpasses being replaced will receive wider sidewalks and underlighting. Other improvements and renderings of the completed bridges are available here.
Where and when will noise barriers be installed?
The following potential noise barriers are recommended for construction:
- NB3E: Westbound I-70, along the edge of the north shoulder from Valley Avenue to Commerce Avenue, near the Martindale-Brightwood neighborhood
- NB3W: Westbound I-70, along the edge of the north shoulder from Commerce Avenue to Lewis Street, near the Martindale-Brightwood neighborhood
Construction of these noise barriers will occur after the reconstruction of the North Split interchange is substantially complete, likely in late 2022. More information about the noise analysis is available at www.northsplit.com/noise.
What ramps are currently closed? What are the detours?
The ramp from the southbound C/D to Michigan Street is closed until late May, weather dependent. There is no formal detour, but the C/D ramp to Ohio Street is still open.
Will local streets be closed?
Yes. Local streets will be closed while bridges over them are being demolished and constructed. No two adjacent streets will be closed at the same time.
Where can I find information about detours or alternate routes?
Detailed information about current closures and detours is available at www.northsplit.com/maps.