175th Avenue/Kemmer Road Intersection


Project Description

The 175th Avenue and Kemmer Road intersection experienced inefficiencies in traffic flow at peak travel times due to a four-way stop configuration. Traffic volumes at the intersection are projected to increase with anticipated growth in the area, which warranted improvements that will better handle existing and future volumes, resulting in improved traffic flow.

Several concepts were analyzed during the preliminary design phase. With input from the public, a roundabout was selected for construction.

Funding Information

This $5 million project is funded through the MSTIP Bonding Cost-sharing program. The total project cost includes the estimated cost of design, right-of-way and construction and is subject to change.

Community Participation Organization CPO 6
Commissioner District 1

Media Releases

Project Contact

Engineering and Construction Services
Capital Project Management
Email: Engineering and Construction Services

Project Map

175th & Kemmer Project Vicinity Map

Current Activity - construction


Visit GetUsThere.org for Roy Rogers Road area traffic alerts.

Visit wc-roads.com for Washington County traffic alerts.


Activity Update 2/20/2019: Minor work continues to complete the project, as weather permits. Minimal traffic impacts are anticipated.


Prior Updates

Activity Update 12/27/2018: Intermittent lane closures from 9 a.m.-5 p.m. weekdays will continue through Jan. 31, 2019, due to underground utility conflicts. Permanent striping and safety markings will be installed in spring 2019.


Activity Update 11/16/2018: The 175th Avenue and Kemmer Road roundabout opened late Nov. 15. Work remaining includes connection of street lights to a permanent electrical source by PGE and landscaping. Permanent striping and safety markings will be installed in spring 2019.

Activity Update: 10/26/2018: The 175th Avenue/Kemmer Road intersection closure has been delayed to Nov. 1-16. The Kemmer Road closure, between 175th and 176th avenues, will be extended through Nov. 16. Media release Detour

Activity Update 10/22/2018: From Oct. 29-Nov. 13, 175th Avenue will be closed at Kemmer Road for construction of a roundabout. Media release

Activity Update 10/12/2018: Kemmer Road will remain closed west of 175th Avenue through Nov. 12. In addition, 175th Avenue will be closed at Kemmer Road Oct. 29-Nov. 12. Media release Detour

175th Avenue detour map


Activity Update 9/5/2018: Kemmer Road, between 175th and 176th avenues, will be closed Sept. 17-Oct. 16. Media release Detour


Kemmer Road detour map




Activity Update 4/10/2018: Construction is set to begin April 16 with lane closures 9 a.m.-3:30 p.m. weekdays April 16 through August 31. Two closures will be scheduled later in construction. Media release

Activity Update 2/22/2018: Construction contract for the 175th Avenue/Kemmer Road project has been awarded to Kerr Contractors by the Board of County Commissioners at their Feb. 20, 2018 meeting.



Activity Update 4/20/2017: Open house displays are now available on the Design tab.



Activity Update 3/21/2017: Open house scheduled for April 19. Media release

Activity Update 7/5/2016: Staff completed the alternatives analysis, which includes feedback from the April open house. The roundabout alternative was selected and will be advanced to the next stage of design. A second open house will be scheduled when the design plans are 75% complete.


Displays from the April 2016 open house area posted to the 'Design' tab.

This project is currently in the preliminary design phase. Construction is anticipated to occur in 2018.


Open House #2 - April 19, 2017


Open House #1 - April 21, 2016

Project Timeline

Construction start date: 03/01/2018
Estimated completion date: 04/30/2019





Note: Project dates are estimates and subject to change.