Welcome to the I-29 Exit 77 (41st Street) Interchange and Environmental Study Project

The South Dakota Department of Transportation (SDDOT) in conjunction with the City of Sioux Falls, the Sioux Falls Metropolitan Planning Organization (MPO) and the Federal Highway Administration (FHWA) has contracted with HDR, Inc. to perform an interchange modification justification study for the I-29 Exit 77 interchange and conduct the associated environmental investigation.


Public Meeting Held!

May 11, 2017

The Study Team held a Public Meeting on May 10th, 2017 to discuss the project recommendations. Additional documents have been posted to the Meeting Materials page. A video of the presentation will be available soon. Thank you to those who attended!

As a reminder, project documents can be found here.