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Acceptance of University Ave. and Grandview Ave. Intersection Improvements Project Copyrighted September 21, 2020 City of Dubuque Consent Items # 8. City Council Meeting ITEM TITLE: Acceptance of UniversityAve. and GrandviewAve. Roundabout SUM MARY: City Manager recommending acceptance of the improvements for the UniversityAvenue and North GrandviewAvenue Roundabout Intersection Improvement Project, as completed by Eastern lowa Excavating and Concrete, LLC. RESOLUTION Accepting the UniversityAvenue and North Grandview Avenue Roundabout intersection I mprovement Project and authorizing the payment to the contractor SUGGESTED Suggested Disposition: Receive and File;Adopt Resolution(s) DISPOSITION: ATTACHMENTS: Description Type University and North GrandviewAvenue Roundabout City Manager Memo Acceptance-MVM Memo Staff Memo Staff Memo Resolution Resolutions Engineer's Cert Supporting Documentation Dubuque THE CITY OF � ui-Aseria cih DuB E , . � . , � II � Maste iece on tj2e Mississi i zoo�•zoiz•zois YP pp zoi�*zoi9 TO: The Honorable Mayor and City Council Members FROM: Michael C. Van Milligen, City Manager SUBJECT: University Avenue and North Grandview Avenue Roundabout Intersection Improvement Project CIP No. 3002724, lowa DOT Project No. STP-A-2100 (689)--86-31 DATE: September 15, 2020 City Engineer Gus Psihoyos is recommending acceptance of the improvements for the University Avenue and North Grandview Avenue Roundabout Intersection Improvement Project, as completed by Eastern lowa Excavating and Concrete, LLC, in the final contract amount of$1,342,408.35, which is a 6.7% increase from the original contract amount of$1,257,852.18. The additional cost was due to higher than anticipated asphalt replacement required at the mid-town transfer, the addition of flag poles and additional driveway replacement at the fire station. A short limestone retaining wall was added to address potential steep slopes next to the sidewalk in the SW corner of the intersection. There was a pavement thickness incentive payment made as required per IDOT specifications. 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 Dubuque THE CITY OF � All•America Ciry DuB E ��K�,�� ' � II ��' Maste iece on the Mississi i Z°°'�Z°12'2°13 YP pp zoi�*zoi9 TO: Michael C. Van Milligen, City Manager FROM: Gus Psihoyos, City Engineer DATE: September 15, 2020 RE: University Avenue and North Grandview Avenue Roundabout Intersection Improvement Project CIP No. 3002724, lowa DOT Project No. STP-A-2100 (689)--86-31 INTRODUCTION The purpose of this memorandum and attached resolution is about the acceptance of the improvements for the University Avenue and North Grandview Avenue Roundabout Intersection Improvement. BACKGROUND In July of 2016, the City received bids for this intersection and the intersection at Loras Boulevard and North Grandview Avenue to be signalized intersections. These proposed signalized intersection improvements were recommended by the East/West Corridor Study that was formally adopted by the City Council in February 2012. Because of the positive feedback and the successful operational perFormance of the new Grandview-Delhi-Grace Roundabout, Engineering staff considered the possibility of modifying the proposed signalization project to include a roundabout at the University Avenue and North Grandview Avenue Intersection. There were several issues that needed to be overcome before a roundabout could be considered including potential funding. City staff discussed the potential revised roundabout concept with the lowa DOT first. District 6 Local Systems Engineer was supportive of the potential project change and consulted with the Office of Traffic and Safety, who also supported the concept. To fund the proposed project, the City pursued grant funding from various sources including an DMATS STBG Grant, lowa Clean Air Attainment Program (ICAAP) Grant and Traffic Safety Funds Grant (TSF). The City was successful in acquiring funding for this project from all three listed funding sources. 1 DISCUSSION The project provided for construction of a roundabout at the intersection of University Avenue and North Grandview Avenue. Engineering staff worked with MSA/Ourston 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 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. Engineering staff used the design model developed by MSA/Ourston to develop the rest of the construction documents with specific attention to pedestrian access, including ADA issues, lighting, construction phasing, utility impacts and business access in the area. Some the physical elements of the roundabout include: ■ 9" doweled PCC pavement to facilitate larger vehicles and accommodate construction phasing. ■ A colored concrete truck apron to allow oversized vehicles to get through the roundabout when needed. Most vehicles (including buses) will not need to use the surmountable truck apron. There is an apron across from Fire Station No. 4 for turning and backing into the driveway. ■ Four (4) LED street lights to provide lighting at street intersections and cross walks for good visibility at night. ■ Directional signage to alert drivers to the operation of the roundabout and to alert them to pedestrian crossing areas. ■ Deflecting splitter islands which divert the traffic so vehicles slow down and are able to easily blend into the circular traffic pattern. ■ Recycled Purington brick accents along the edges of the project to pay respect to the former brick streets in the area. ■ Pedestrian access ramps that are ADA compliant will be installed. ■ A Jule Bus pull off lane for the relocated Mid-Town Transfer Station and related sidewalk and lighting improvements. The Jule Mid-Town Transfer Station is relocated from North Grandview Avenue south of the intersection to North Grandview Avenue north of the intersection adjacent to Allison-Henderson Park. The project also included some utility improvements. These include the replacement of 6" and 12" watermain, replacement of 8" sanitary sewer, manholes, replacement of storm sewer, replacement of two fire hydrants, and the installation of electrical and fiber optic conduit. The University Avenue and North Grandview Avenue Roundabout Intersection Improvement was completed by Eastern lowa Excavating and Concrete, LLC of Cascade, lowa in the final contract amount of $1,342,408.35 which is a 6.7% increase from the original contract amount of 1,257,852.18. The additional cost to the project was due to higher than anticipated asphalt replacement required at the mid-town transfer, the addition of flag poles and additional driveway replacement at the fire station. A short 2 limestone retaining wall was added to address potential steep slopes next to the sidewalk in the SW corner of the intersection. There was a pavement thickness incentive payment made as required per IDOT specifications. RECOMMENDATION I recommend that the City Council accept the improvements and authorize the payment of the contract amount of $1,342,408.35 to Eastern lowa Excavating and Concrete, LLC for the University Avenue and North Grandview Avenue Roundabout Intersection improvement. BUDGETIMPACT The project cost for the University Avenue and North Grandview Avenue Roundabout Intersection improvement project is summarized below: Description Award Final Construction Contract $ 1,257,852.18 $ 1,342,408.35 Contingency (10%) 116,298.00 0.00 Engineering Design and Administration 120,000.00 154,521.71 Total Construction Costs $ 1,494,150.18 $ 1,496,930.06 The project funding is summary as follows: CIP No. Fund Description Fund Amount 3002724 lowa DOT TSF Grant $ 500,000.00 3002724 lowa DOT ICAAP Grant 264,842.00 3002724 DMATS STBG Grant 200,000.00 3002724 Grandview/Universit Roundabout 445,053.84 7401405 Watermain Replacements 87,034.22 Total Project Funding $ 1,496,930.06 ACTION TO BE TAKEN The City Council is requested to adopt the attached resolution to accept the improvements and to authorize the payment of the contract amount of $1,342,408.35 to Eastern lowa Excavating and Concrete, LLC for the University Avenue and North Grandview Avenue Roundabout Intersection Improvement Project. Prepared by: Jon Dienst, P.E. cc: Bob Schiesl, Assistant City Engineer Nate Kieffer, PLS John Klostermann, Public Works Director Renee Tyler, Transportation Services Manager Denise Ihrig, Water Department Manager 3 RESOLUTION NO. 291-20 ACCEPTING THE UNIVERSITY AVENUE AND NORTH GRANDVIEW AVENUE ROUNDABOUT INTERSECTION IMPROVEMENT PROJECT AND AUTHORIZING THE PAYMENT TO THE CONTRACTOR WHEREAS, the Public Improvement Contract for the University Avenue and North Grandview Avenue Roundabout Intersection Improvement Project (the Project) has been completed by the contractor, Eastern Iowa Excavating & Concrete, LLC (Contractor), and the City Engineer has examined the work and recommends that the Project be accepted; and WHEREAS, the final contract amount for the Project is $1,342,408.35; WHEREAS, the Contractor has previously been paid $1,319,045.95, leaving a balance of $23,362.40; 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 Director of Finance and Budget is hereby directed to pay the balance of the retainage of $23,362.40 as provided in Iowa Code chapter 573, and to pay such retainage in accordance with the provisions of Iowa Code chapter 573 or Iowa chapter 26.13. Passed, approved and adopted this 21st day of September2020. 1l i Roy D. Buol, Mayor Attest: Kevir%S. Firnstahl, CMC, City Clerk CITY ENGINEER'S CERTIFICATE OF FINAL COMPLETION OF THE UNIVERSITY � AVENUE AND NORTH GRANDVIEW AVENUE ROUNDABOUT INTERSECTION , IMPROVEMENT PROJECT ; The undersigned City Engineer of the City of Dubuque, lowa, hereby certifies that he has inspected the University Avenue and North Grandview Avenue Roundabout Intersection Improvement Project has been perFormed in compliance with the terms of the � Public Improvement Contract, and that the total cost of the completed work is � $1,496,930.06. ; Dated this 15t" day of September 2020. i� �� ' �� , � , Cit En ineer �I Gus Psihoyos, y g i i ii Filed in the office of the City Clerk on the /��day of _�020. i �: a I ;7 Kev� . Firnst , CMC, ity Clerk ; li ,I � ; �� ! � I � q ; � � �_� � �