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Grandview Avenue and Delhi Street Roundabout Project Acceptance Copyrighted January 3, 2018 City of Dubuque Consent Items # 11. ITEM TITLE: GrandviewAvenue and Delhi Street Roundabout Intersection Improvement ProjectAcceptance SUMMARY: City Manager recommending acceptance of the public improvementforthe North GrandviewAvenue and Delhi Street Roundabout Intersection Improvement Project as completed by Portzen Construction. RESOLUTION Accepting the North GrandviewAvenue & Delhi Street Roundabout Intersection Improvement Project and authorizing the payment of the contract amount to the contractor SUGGESTED DISPOSITION: Suggested Disposition: Receive and File; Adopt Resolution(s) ATTACHMENTS: Description Type North GrandviewA�nue and Delhi Street Roundabout City Manager Memo Intersection Improvement Project-NNM Memo Staff Memo Staff Memo Resolution Resolutions Engineers Cerlficate- Executed Supporting Documentation THE CITY OF Dubuque � AIFA�erlwGh UB E '�� III► Masterpiece on the Mississippi Z°°'�w'2 7A13 2017 TO: The Honorable Mayor and City Council Members FROM: Michael C. Van Milligen, City Manager SUBJECT: North Grandview Avenue and Delhi Street Roundabout Intersection Improvement Project DATE: December 22, 2017 City Engineer Gus Psihoyos is recommending acceptance of the public improvement for the North Grandview Avenue and Delhi Street Roundabout Intersection Improvement Project, as completed by Portzen Construction, in the final contract amount of $756,203.60, which is an 8.3°k increase from the original contract amount of $698,000.59. The extra cost is primarily due to landscaping costs for the center of the roundabout and additional electrical conduit and wiring work. The landscaping work in the center of the island was not originally part of the base bid but was added later as the project was under construction. I concur with the recommendation and respectfully request Mayor and City Council approval. �� Mic ael C. Van Milligen� � � MCVM:jh Attachment cc: Crenna Brumwell, City Attorney Teri Goodmann, Assistant City Manager Cori Burbach, Assistant City Manager Gus Psihoyos, City Engineer THE CITY OF Dubuque � -�� Ap•Aneris�6i� UB E .��: �.�� I � Masterpiece on the Mississippi Z°°''Z°12 2013•2017 TO: Michael C. Van Milligen, City Manager ---- � FROM: Gus Psihoyos, City Engineer � _ RE: North Grandview Avenue and Delhi Street Roundabout Intersection Improvement Project DATE: December 21, 2017 INTRODUCTION The enclosed resolution provides for the acceptance of the public improvement for the North Grandview Avenue and Delhi Street Roundabout Intersection Improvement Project. BACKGROUND In August 2014, the City submitted an application to the lowa DOT for a Traffic Safety Improvement Grant. The location selected was the North Grandview Avenue, Delhi Street and Grace Street intersection. This intersection was a five way stop and had operational delays during peak travel times. A conceptual roundabout was designed by the City's consulting engineer, MSA/Ourston (formerly GHD) of Madison, WI, to minimize the impact to adjacent property owners. The roundabout concept was developed to accommodate various trucks, provide adequate sight distance, and provide natural vehicle paths. This concept was created using an aerial photo and had design modifications made that included a minor shift in the circle location or shape, alignment adjustments, and development of optimal entry/exit paths. The grant application was approved by the lowa DOT Transportation Commission on January 13, 2015 in the amount of$500,000. The project provided for construction of a roundabout at the intersection of North � Grandview, Delhi and Grace Streets. Engineering staff worked with MSA/Ourston, formerly known as GHD on the design of the proposed roundabout. MSA/Ourston is a well-respected roundabout design firm that has been involved in the design of hundreds of roundabouts in the United States. MSA/Ourston is one of two consulting firms in lowa that the lowa DOT uses for peer reviews on roundabout designs. MSA/Ourston designed the alignment and profile for the roundabout to make sure it properly addresses sight distance and speed concerns at the roundabout. The roundabout is designed to operate with vehicles traveling around 15 mph through the roundabout. 1 Engineering staff used the design model developed by MSA/Ourston to develop the rest of the construction documents with specific attention to pedestrian access, incfuding ADA issues, lighting, construction phasing, utility impacts and business access in the area. As aart of this aroject; Dubuque conducted an extensive public awareness campaian on the benefits of roundabouts. This included cable TV, radio, Broadcast TV, Newspaper, d�or #a daor Q & A cam��ign; public inf�rmation meetings, specific meetings with affected groups (schools, colleges, hospital businesses, transit, solid waste, commercial drivers, senior centers, school bus drivers, students, parents), and social media. Additionally, the City developed videos and brochures outlining the proper way for vehicles, bicyclists and pedestrians to move through the roundabout. All this information is available on the City's website, www.citvofdubuqu�.or�/raundabouts. Because of this effort, the City received the Tom McDonald Safety Award. The Tom McDonald Safety Award was developed to recognize individuals, agencies, or programs that have contributed to significant improvements in traffic safety at the local level. The City of Dubuque also received the American Public Works Association — lowa Chapter Project of Year award for transportation projects under one million dollars in cost. DISCUSSION The North Grandview Avenue and Delhi Street Roundabout Intersection Improvement Project was constructed by Portzen Construction of Dubuque, IA in the final contract amount of $756,203.60 which is an 8.3% increase ($58,203.01) from the original contract amount of$698,000.59. The extra cost is primarily due to landscaping costs for the center of the roundabout and additional electrical conduit and wiring work, this will be funded from the FY16 and FY17 street construction general repairs fund. The landscaping work in the center of the island was not originally part of the base bid but was added later as the project was under construction. RECOMMENDATION I recommend that the City Council accept the improvements and authorize payment of the contract amount of $756,203.60 to Portzen Construction for the North Grandview Avenue and Delhi Street Roundabout Intersection Improvement Project. BUDGET IMPACT The summary of cost for North Grandview Avenue and Delhi Street Roundabout Intersection Improvement Project is as follows: Award Final Construction Contract $ 698,000.59 $756,203.60 Contingency 67,764.50 0.00 Engineering Design, Administration & Inspection 111�81� 113,430.54 Total Project Cost 877 576.52 $ 869 634.14 2 The project funding summary is as follows: CIP No. Fund Description Fund Amount 3002611 Grandview/Delhi Roundabout $ 184,119.74 lowa DOT Traffic Safety Improvement Grant 500,000.00 7401405 Watermain Replacements 70,059.44 3002245 Pavement Markings 46,000.00 3002142 FY 16 Street Construction General Repairs 34,743.18 3002142 FY 17 Street Construction General Repairs 34,711.78 Total Project Funding $869,634.14 ACTION TO BE TAKEN The City Council is requested to adopt the attached resolution accepting the improvements, establishing the final contract amount of $756,203.60, and for the payment of the contract amount to Portzen Construction for the North Grandview Avenue and Delhi Street Roundabout Intersection Improvement Project. Prepared by Jon Dienst, P.E. cc: Bob Schiesl, Asst City Engineer Dave Ness, Civil Engineer II Duane Richter, Civil Engineer I John Klostermann, Public Works Director Denise Ihrig, Water Department Manager 3 RESOLUTION NO. 4-18 ACCEPTING THE NORTH GRANDVIEW AVENUE & DELHI STREET ROUNDABOUT INTERSECTION IMPROVEMENT PROJECT AND AUTHORIZING THE PAYMENT OF THE CONTRACT AMOUNT TO THE CONTRACTOR WHEREAS, the public improvement contract for the North Grandview Avenue & Delhi Street Roundabout Intersection Improvement Project (the Project) has been completed by the Portzen Construction, Inc. (Contractor), the City Engineer has examined the work and recommends that the Project be accepted; and WHEREAS, the final contract amount for the Project is $756,203.60; WHEREAS, the Contractor has previously been paid $755,362.44, leaving a balance of $841.16; and WHEREAS, the City Council finds that the recommendation of the City Engineer should be accepted. NOW, THEREFORE, BE IT RESOLVED BY THE CITY COUNCIL OF THE CITY OF DUBUQUE, IOWA: Section 1. The recommendation of the City Engineer is approved, and the Project is hereby accepted. Section 2. The Finance Director is hereby directed to pay to the Contractor the balance of the retainage of $841.16 as provided in Iowa Code chapter 573, and to pay such retainage in accordance with the provisions of Iowa Code chapter 573 or Iowa Code chapter 26.13. Passed, adopted and approved this 3rd day of January 2018. Attest: v�h S.Irnstahl, C, City Clerk Roy D. Buol, Mayor CITY ENGINEER'S CERTIFICATE OF FINAL COMPLETION OF THE NORTH GRANDVIEW AVENUE & DELHI STREET ROUNDABOUT INTERSECTION IMPROVEMENT PROJECT The undersigned City Engineer of the City of Dubuque, lowa, hereby certifies that he has inspected the North Grandview Avenue & Delhi Street Roundabout Intersection Improvement Project, and that said Project has been perFormed in compliance with the terms of the Public Improvement Contract, and that the total cost of the completed work is $869,634.14. � f ,� � <� ,.. A.. ..„,�. Dated this�� , day of .��`�`�C��'��,��°�, 2017. ��-� �� "" ,, � �..r -�'�a .�� : ....� e�� f� � ��.�...,� Gus Psihoyos, City Engineer i) i� Filed in the office of the City Clerk on th day of ��2017. _�� .. I� K �in S. Firns ahl, CMC City Clerk i