Construction and Street Closures

Posted on: May 18, 2017

1st Avenue Duct Bank Project – 6th Street to 9th Street


UPDATE 06/23/2017:

Beginning mid-morning, Tuesday, June 27, the southbound 1st Avenue lane closure will be changed to a northbound 1st Avenue lane closure between 6th Street and E. 7th Street.  The northbound lane closure will remain in place until 3:00 pm on Friday, June 30.  After that, the northbound lane closure will be in place each week starting at 9:00 am on Monday through 3:00 pm on Friday until further notice.  Drivers on northbound 1st Avenue should expect additional delays, especially during the late afternoon rush hour.


About the Duct Bank Project

Construction of the 1st Avenue Duct Bank Project from 6th Street to 9th Street began on May 18. The project will install a duct bank (multiple utility conduits within an underground corridor) to allow overhead and underground utilities to relocate into the duct bank before reconstruction of this same segment of 1st Avenue begins in March/April 2018. 

Traffic Impact

A single lane closure in one direction will be in place each week on 1st Avenue, from 9:00 am on Monday until 3:00 pm on Friday, for the duration of the duct bank project. Construction should be complete by September 1, 2017. Sidewalk access will be maintained along 1st Avenue. Access to businesses within the project corridor will be maintained at all times. 

Learn More

Questions can be directed to Assistant City Engineer Scott Larson at 319.248.1720 or email Project updates will be posted at

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