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Brentwood City Commission Agenda

Meeting Date:	04/10/2017
Resolution 2017-26 - Authorizing Agreement with Sulliivan Engineering for Study of Alternatives for Ragsdale Road/Split Log Road Intersection
Submitted by:	Mike Harris, Engineering
Department:	Engineering

Information

Subject

Resolution 2017-26 - Authorizing an Agreement with Sulliivan Engineering for Study of Alternatives for the Ragsdale Road/Split Log Road Intersection

Background

The intersection of Ragsdale Road and Split Log Road experiences significant delay during peak times as development on the east side of Brentwood has continued to expand. Additionally, Williamson County Schools recently announced the purchase of the "Foster" property, where construction of an elementary school is anticipated, followed by a middle school at some point in the future. Continued growth in this area is anticipated, and the delay at the intersection will continue to worsen. The fact that the intersection is a three-way stop is especially problematic at this location. Therefore, staff is recommending study of several options for improvements to reduce delay and increase the capacity at this location.. Three potential options have been identified, as follows:

Signalize the intersection in its present configuration;
Realign the intersection such that Split Log Road becomes a curve for continuous traffic flow, with Ragsdale "teeing" into Split Log with potential for signalization;
Construct a roundabout

A conceptual layout for each of these alternatives is attached. Each of these options has pros and cons, so in order to facilitate making the best long term solution, staff is first recommending a more detailed engineering study of these three options The study will investigate key parameters of each alternative to aid in making the most informed decision. Some of the characteristics to be considered include:

Safety
Capacity to handle current and future traffic (including the school)
Impact to neighboring properties
Level of service
Cost
Constructability

Since Sullivan Engineering, Inc. (SEI) is familiar with this roadway having designed the original widening project several years ago and has successfully designed many road projects in Brentwood, staff requested the attached proposal agreement from Sullivan for this study. Staff asked that SEI enlist the help of Neel Schaffer, the City's traffic consultant, to aid in the study from a signal/operational perspective. These two firms can provide a thorough analysis that will provide the information needed to make a sound decision on the best improvement for this busy intersection. The total cost of the study, as outlined in the attached agreement, is $19,354.50. Staff expects the study will take approximately 90 days to complete. Once an alternative is selected, staff will negotiate a final engineering design agreement with SEI to initiate construction with the goal of having improvements completed by fall of 2018 when the new school opens. Funding for this project is programmed as part of the proposed FY 2018-2023 Capital Improvements Program.

Please direct any questions to the Engineering or Public Works Director.

Staff Recommendation

Staff recommends approval of the agreement with Sullivan Engineering, Inc.

Previous Commission Action

No previous action by the Commission on this item.

Fiscal Impact

Amount :	$19,345.50
Source of Funds:	Capital Improvement Program
Account Number:	311-43100-1044

Fiscal Impact:

Given the timing of proposed school construction and opening, staff is recommending proceeding with this study as soon as possible. While no funding for this project was included in the FY 2017 Capital Projects Fund budget, funding will be programmed in the proposed FY 2018 Capital Projects Fund budget and sufficient undesignated reserves are available in the Capital Projects Fund to cover the cost of this project through the end of FY 2017.

Attachments
Resolution 2017-26
Agreement
Signalization Layout
Curve Layout
Roundabout Layout
Signed Resolution