On-Call Roundabout Design Peer Review Contract:

1. APPROVE and AUTHORIZE the Executive Director to execute a contract with GHD, subject to approval by Agency Counsel, in an amount not to exceed $640,000 to provide On-Call Roundabout Design Peer Review engineering services for the SR 156 / Castroville Boulevard Interchange project, the SR 68 Scenic Highway Improvement project, and other highway roundabout projects as needed in Monterey County for the two-year period ending December 31, 2020;
2. APPROVE the use of Measure X funds budgeted to this project; and
3. AUTHORIZE the Executive Director to take such other further actions as may be necessary to fulfill the intent of the contract, including approvals of future modifications or amendments that do not significantly alter the scope of work, or change the approved contract term or amount, subject to approval by Agency Counsel.

The Transportation Agency is delivering two Measure X funded projects that involve roundabout design alternatives and engineering design by Caltrans, which include three roundabouts in the State Route 156 / Castroville Boulevard Interchange project and nine roundabouts included in the State Route 68 Scenic Highway Improvement project. This contract with GHD will allow TAMC to efficiently develop and optimize roundabout alternatives in cooperation with Caltrans designers.

The On-Call Roundabout Design Peer Review budget is funded entirely through Measure X revenues. The not-to-exceed amount for this on-call contract for roundabout engineering services is $640,000.  A task order will be issued to the Consultant by the Executive Director to perform engineering services for each roundabout project or individual roundabouts based on the scope of work.  The Executive Director may choose to execute some or all of the tasks included in the scope of work for each task order.  The total work for all of the task orders will not exceed the contract amount.

The Transportation Agency for Monterey County (TAMC) proposes to deliver two State Highway projects involving roundabouts included in the Measure X regional project list.  Caltrans is designated as the Lead Agency and will conduct the engineering design for each project.  Because Caltrans has limited roundabout design expertise, TAMC proposes to support and supplement Caltrans design staff with consultant services specializing in roundabout design. On October 24, 2018, the Transportation Agency Board of Directors authorized staff to release a Request for Proposals for On-Call Roundabout Design Peer Review, for a not-to-exceed amount of $640,000. Two proposals were received by the November 29, 2018 deadline.  

Selection Process

Proposals were received from Kimley-Horn Associates and GHD. Both proposals were found to be responsive and responsible bidders.  A review panel was formed with the following members:

• David Silberberger, Caltrans District 5 Project Manager
• Roger Barnes, Caltrans District 5 Traffic Operations
• Andrea Renny, City of Monterey
• Enrique Saavedra, County of Monterey
• Rich Deal, TAMC Project Manager
• Roberto Banda, Caltrans Design

The review panel read and scored the written proposal submittals. Reviewers’ scores were averaged and the difference between the two firms was less than two points.  Interviews for both firms were conducted on Wednesday, December 19, 2018.  Consultant proposals and interviews were evaluated according to selection criteria listed in the Request for Proposals: 

1. Qualified design team, project approach, and proposed work plan that efficiently fulfills the objectives of the project.
2. Strong depth of experience designing roundabouts and use of roundabout design software to determine roundabout geometry, vehicle fast path, entry overlap, high speed entry, truck and bus turning movements, pedestrian accessibility, and bicycle circulation.  Experience performing fatal flaw traffic operations analyses and optimizing inscribed circle diameter, lane requirements, approach angles, splitter island lengths, center island configurations, and exit designs.
3. Experience designing roundabouts and preparing plans, specifications and estimates (PS&E) for roundabout projects on the State Highway system.  Experience reviewing PS&E for projects designed by Caltrans.
4. Consultant has experience developing VISSIM models for roundabouts and preparing succinct technical reports and graphics that explain technical information to a non-technical audience.
5. Consultant has a strong working relationship with TAMC and Caltrans.

Following interviews, the review panel recommended the GHD team for the proposed work.  Both teams were exceptionally well qualified. The GHD team is recommended because it had successfully designed and completed more roundabouts on the California State Highway system, which was reflected in the higher scores in two categories: Criteria #2 – “Strong depth of experience designing roundabouts” and Criteria #5 – “Strong working relationship with Caltrans.”  

The draft scope of work  for this contract is attached.