Project Overview

Project Overview

The North Split Project will replace or repair deteriorating bridges, upgrade pavement conditions in the area, lessen congestion and improve safety.


Now that the System-Level Analysis for the entire downtown interstate system has been completed, the Project Team is beginning to focus specifically on the needs of the North Split interchange. Alternatives for the interchange improvements will be developed through the environmental (NEPA) process. No decisions about a final preferred alternative – including right-of-way impacts, interchange configuration or number of lanes – have been made at this point. There will be many opportunities for public input during the development of the Environmental Assessment document. The environmental analysis process is expected to last through 2020.


Improvements must be made in the next several years to repair the deteriorating bridges and pavement. During this process it may also be feasible to address some of the factors that contributed to over 1,600 accidents in the interchange between 2012 and 2016. This work is critical and should proceed as quickly as possible to address:

  • Safety
  • Deteriorated condition of bridges
  • Deteriorated condition of pavement
  • Interchange operations
  • Congestion

See the System-Level Analysis
Learn more about NEPA and the Environmental Process
Learn about Environmental Justice
Learn more about the History of the North Split
See Project Frequently Asked Questions