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U.S. 20 at Barclay Drive (Sisters)
 
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Current News

City of Sisters and ODOT move forward with final roundabout design

ODOT staff will meet with Sisters City Council, Thursday, August 25th to give an update on the US 20 @ Barclay roundabout design process. 

The city and ODOT have convened a focus group of business owners adjacent to the US 20/Barclay intersection to get feedback on traffic management during construction and roundabout aesthetics. ODOTwill present the traffic management plan and ask for council to consider and discuss a motion to approve the plans at the meeting. Copies of the traffic management plans are below.

​McKinney Butte Detour Plan ​Barclay Road Detour Plan



Roundabout Aesthtics - DRAFT Concept


ODOT and the city continue to move forward in the planning process and are working with local entities to plan for construction. The design phase will continue through Winter 2016 when the project is put to bid.

Purpose of the Project

The purpose of this project is to improve safety, mobility, and access at the intersection of US 20 and Barclay Drive located just west of the City of Sisters downtown area.
 
This proposed project, as outlined in the City of Sisters Transportation System Plan, involves designing and constructing a single-lane roundabout at the intersection of U.S. 20 and Barclay Drive and McKinney Butte Road.
 
Constructing a roundabout rather than a signal will reduce conflicts among vehicles, bicyclist and pedestrians while improving traffic flow for all users, including freight. It will also improve access to and from the Barclay/Locust alternate route and provide an aesthetically pleasing gateway into the City of Sisters and Central Oregon.
 
 
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Need for the Project

The performance of Highway 20 (US 20/OR 126) as a corridor is one of the most significant transportation issues being faced by the City of Sisters.
The intersection of US 20 and Barclay Drive looking north and east.
According to the City of Sisters TSP adopted in January 2010, this intersection does not currently meet jurisdictional operating standards for both volume-to-capacity and safety conditions.  In fact there have been recent serious crashes at the intersection and there is great concern for school related pedestrian safety.
 
Based on the TSP analysis, intersection failure occurs due to delays experienced by Barclay Drive traffic.  In other words, delays are caused by the high volume of through traffic on U.S. 20 and the resulting lack of available gaps for Barclay Drive traffic to enter or cross the U.S. 20 traffic stream.  Also a high level of truck traffic likely affects highway performance at this intersection.
 
Design Criteria
The design should support one of the key focuses of the Motor Vehicle Improvement Plan in the City’s TSP. This project should be considered an initial phase for implementation of the TSP’s alternate route around downtown Sisters during peak periods of congestion.
 
Preferred intersection improvements at the intersection of U.S. 20 and Barclay Drive will support the Oregon Highway Plan, by including the following considerations:
  • Geometric design for serving and accommodating truck traffic
  • Cost comparisons of traffic signal versus roundabout, including construction and operations/maintenance
  • Economic and business viability, especially during construction
  • Safety and access of pedestrian crossings
  • Safety and access of bicycle movements
  • Potential for motor vehicle queuing from downtown to extend into the roundabout
  • Intersection capacity, including potential alternative measures of congestion and mobility
  • Construction phasing including consideration of interim improvements transitioning to the long-term decision for signal or roundabout
  • Compliance with the American with Disabilities Act
  • Storm water quantity and quality
 
Development of the right solution at this intersection will require close coordination with the freight industry.  ODOT and the City gained support from the freight industry for the roundabout design sizing, through the statewide Motor Carriers Transportation Advisory Committee (MCTAC) on April 9, 2015.

Public Involvement

The City of Sisters, with the cooperation of ODOT, has done a great deal of public involvement, planning and preliminary design for a roundabout at US 20 and Barclay Drive.  The City has indicated that their strong preference is for a roundabout at this intersection as a long-term solution.  They have secured funding for a roundabout through the Central Oregon Area Commission on Transportation, and together ODOT and the City are working on a proposed design.
 
ODOT and the City continue to hear from stakeholders regarding this proposed project. The proposed design is slated for construction in late 2016.

Funding and Schedule

The project budget is about $3.2 million with a combination of State and Local funding as included in the 2015-2018 Statewide Transportation Improvement Program.
 
Design​ ​2013-2016
​Bid Let ​December 2016
​Construction ​February - June 2017
 

Project Materials

Contacts

​Name ​Title ​Phone ​Email Address
​Mike Darling ​Project Leader, ODOT ​541-388-6329 charles.m.darling@odot.state.or.us
​Paul Bertagna ​Public Works Director, Sisters ​541-323-5213 pbertagna@ci.sisters.or.us
​Gary Farnsworth ​Area Manager, ODOT ​541-388-6071 gary.c.farnsworth@odot.state.or.us
​Abbey Driscoll ​Community Liaison, ODOT ​541-388-6064 abbey.driscoll@odot.state.or.us
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