Great Lakes North Central South Central FAX: (718) CONTACT PERSON: ADDRESS: Daniel Hom, PE, Engineer-in-Charge

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1 AMERICAN SOCIETY OF HIGHWAY ENGINEERS National Project of the Year Award OFFICIAL ENTRY FORM AWARD CATEGORY (Check One): Under $20 Million Over $20 Million SPONSORING REGION (Check One): Northeast Mid-Atlantic Southeast Great Lakes North Central South Central Northwest Rocky Mountain Southwest CONTACT INFORMATION FOR SPONSORING REGION: Primary Contact Name: Richard N. Cochrane, PE ASHE Region Position: Secretary Phone (Office): (610) Phone (Mobile): (484) Address: Secondary Contact Name: Scott R. Eshenaur, PE ASHE Region Position: Phone (Office): (717) Phone (Mobile): (717) Address: ext PROJECT INFORMATION (From Section Entry): Judging Committee Chairperson; Altoona Section Representative HNTB New York Engineering and Architecture, P.C. and New York City Department of Transportation ENTERING AGENCY/COMPANY S NAME: PROJECT NAME: Replacement of the Shore (Belt) Parkway Bridge over Mill Basin TYPE: Highway and Bridge Design PROJECT LOCATION: Borough of Brooklyn CITY: Brooklyn COUNTY: Kings County CONSTRUCTION COST: $264 million BUDGETED CONSTRUCTION COST: $264 million PROJECT COMPLETION DATE: December 2017 (Substantial Completion) PROJECT OWNER: New York City Department of Transportation STREET ADDRESS: 4105 Avenue V CITY: Brooklyn STATE: NY ZIP: PHONE: (347) FAX: (718) CONTACT PERSON: ADDRESS: Daniel Hom, PE, Engineer-in-Charge dhom@dot.nyc.gov PROJECT DESIGN FIRM: HNTB New York Engineering and Architecture, P.C. STREET ADDRESS: 350 Fifth Avenue, 57th Floor CITY: New York STATE: NY ZIP: PHONE: (212) FAX: (212) CONTACT PERSON: Garry Tow, PE, Project Manager ADDRESS: GTow@hntb.com PRIME CONTRACTOR: Mill Basin Bridge Constructors, LLC STREET ADDRESS: 421 East Route 59 CITY: Nanuet STATE: New York ZIP: PHONE: (845) FAX: (845) CONTACT PERSON: John Cinguina, PE, Project Manager ADDRESS: jcinguina@halmarinternational.com Entry Form Completed By: Lisa Ayr, Senior Marketing Coordinator Date: 1/29/2018

2 Replacement of the Shore (Belt) Parkway Bridge over Mill Basin Borough of Brooklyn, NY ASHE Section: New York Metropolitan Section (Northeast Region) The Mill Basin Bridge is part of the New York City Department of Transportation s (NYCDOT) proposed Belt Parkway Bridges Reconstruction project for nine bridges along the Belt Parkway in the Borough of Brooklyn, New York. The Belt Parkway carries approximately 145,000 vehicles per day and is part of a series of connected highways which provide access to all five boroughs of New York City, as well as Nassau County, New York. The purpose of the Belt Parkway Bridges Reconstruction project is to address significant problems with the bridges, including dated design features; compromised structural integrity due to years of wear and tear; heavy traffic congestion; and higher than average accident rates. This project is located in the Borough of Brooklyn, New York, between Exits 11 and 13 and encompasses 8,038 feet of the Belt Parkway. The existing bridge was completed in The bridge was an foot, 14-span structure with a bascule main span. The superstructure consisted of a two-girder and floor beam/stringer system in the bascule span and multisteel/concrete girder in the side spans. The substructures consisted of concrete pile bents and multi-column concrete piers founded on concrete/timber piles. The primary objectives of the Belt (Shore) Parkway Corridor project are: 1) To preserve and re-establish the historic character of the parkway for drivers and pedestrians; enhancing and strengthening the visual cohesiveness of this greenspace connected to adjacent park and recreation lands, and creating a network of parks and open spaces along the edge of a densely populated urban area. 2) To retain and improve public access for all parkway users by enhancing amenities, linear pedestrian and bicycle circulation and improving connections. 3) To improve the parkway within a preservation strategy so that changes are both compatible with the parkway s historic character and satisfy current safety, accessibility and park standards and codes. HNTB Corporation/Washington Group joint venture, in association with subconsultants Ysrael Seinuk, P.C.; A.I. Associates, Inc.; Konheim & Ketcham, Inc.; Mueser Rutledge Consulting Engineers; and AKRF Inc., was ultimately selected by NYCDOT to develop alternatives, and design the chosen alternative. In total, eight alternatives were developed, ranging from do-nothing, to a partial rehabilitation, to complete replacement. Ultimately, due to the substandard conditions and deteriorating structure, a complete replacement of the Mill Basin Bridge was selected. The scope of the project combined highway and bridge work, including design of the replacement bridge over Mill Basin on a relocated Belt Parkway alignment, construction of new approach pavements, new retaining walls and installation of new roadway lighting. Through the replacement of the substandard features, this project addressed the following conditions at the bridge and approach roadways: non-standard lane width, stopping sight-distance and grade; missing shoulders; heavily deteriorated concrete pier caps and steel members below roadway joints; deteriorating and spalled concrete decks on both approach spans; varying degrees of section loss on steel superstructure elements; and deteriorating mechanical systems which sometimes froze, leaving the bascule in the open position. When complete, the new Mill Basin Bridge will provide motorists, pedestrians and cyclists a safer and more efficient method of transportation. The proposed bridge will be constructed partially on a new alignment north of the existing bridge and partially on the existing alignment. The bridge will consist of two separate structures; one structure carrying three westbound traffic lanes and a shoulder, while the other carries three eastbound traffic lanes, a shoulder and a pedestrian/bicycle path protected by a barrier-mounted railing along the entire length of the bridge. The new westbound structure will be built in one phase. The new eastbound structure will be built in two phases. Demolition of the existing bridge will commence after opening the first phase of the new bridge to all six lanes of traffic.

3 Replacement of the Shore (Belt) Parkway Bridge over Mill Basin Borough of Brooklyn, NY Replacing the bascule span with a fixed span bridge required coordination with the United States Coast Guard to determine a minimum clearance requirement over the established navigable channel. The Coast Guard required a vertical clearance over mean high water of 60 feet, and a 75-foot horizontal navigation clearance measured normal to the channel. The clear channel width, which measures more than 131 feet, ultimately controlled the vertical profile and length of the proposed bridge. Further, to comply with Coast Guard safety requirements, boaters are protected from striking each of the four piers in the Channel. The two piers which form the channel are surrounded by a Fiber Reinforced Plastic (FRP) Pile Fender System with a Dolphin at either end of the system. The two piers on the outside of the channel are protected via FRP Piles which surround the footing and act as bollards. The new bridge consists of 17 spans: a main channel span flanked by eight approach spans to the north and eight approach spans to the south. This alternative employs a conventional parallel girder superstructure system supported by polyether urethane disc bearings on concrete piers. The piers are supported by cast-in-place concrete piles. The main span measures feet. The approach spans range from 123 feet to feet. The end spans are supported on cantilever abutments and piles. The overall length of the bridge measures 2,645 feet. The proposed design for both structures called for curved, welded steel I-girders and a cast-in-place concrete deck. The steel superstructue is painted and uses an organic zinc rich primer which will aid in preventing corrosion. The superstructure is supported by multi-column, cast-in-place concrete piers which are supported by footings and cast-in-place 24-inch diameter steel H-piles. An interesting construction challenge posed for this project was the erection of the main span girders over the navigational channel. Due to the long main span over the navigable channel, and the construction staging, the contractor chose to erect the bridge from the end abutments towards the main span. The girders needed to be dropped-in, and field spliced with one on each side. On two separate occasions, the contractor was able to obtain permits to close the navigational channel to marine traffic so the girders could be installed. On both occasions, the contractor successfully installed all four girders for Phase I of the eastbound structure, and six girders for the westbound structure, to complete the work. Work Zone Protection of Traffic (WZPT) was an important part of the proposed design, as HNTB was required to maintain six lanes of traffic at all times during construction. HNTB was able to meet this requirement by developing a WZPT which was broken out into five different stages to accommodate the construction of the new bridge in two separate phases. In addition to the development of WZPT plans, HNTB was also responsible for the electrical and drainage designs for the new bridge and approaches. Construction of the new Mill Basin Bridge was awarded to Mill Basin Bridge Constructors, LLC, a Joint Venture between Halmar International, LLC and Michels Corporation, with a proposed bid of $264 million. All Phase I substructure and superstructure members were installed by July To expedite the completion of Phase I, Mill Basin Bridge Constructors, LLC proposed an intermediate traffic staging where the westbound traffic moved from the existing bridge onto the new eastbound structure. This traffic switch was completed in August The project reached substantial completion in December, 2017 after all six lanes of traffic were opened on both the eastbound and westbound structures. The westbound structure currently carries three lanes of westbound traffic, and one lane of eastbound traffic by means of a cattle chute chute while the eastbound structure carries two lanes of eastbound traffic and the pedestrian/bicycle path. Remaining construction milestones include demolition of the existing bridge, including lead abatement, prior to removing members of the steel superstructure; removal of the bascule span, including all electrical and mechanical components; completion of Phase II of the eastbound structure; and seeding and landscaping throughout the project site. Completion of the Mill Basin Bridge project is expected in early 2019, months ahead of the schedule.

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9 Above: Existing bridge shown with substructure work for the new bridge underway. Below: New steel superstructure with deck formwork in place for Phase I of eastbound structure. Ongoing construction activities in channel.

10 Above: Placement of final Phase I steel girder over navigable channel (right side). Below: New eastbound structure open to westbound traffic (left side). Existing eastbound structure open to eastbound traffic (right side).

11 Above: Phase I of project complete in background, all lanes open to traffic. Demolition of existing bridge in foreground.

12 Replacement of the Shore (Belt) Parkway Bridge over Mill Basin Borough of Brooklyn, NY ASHE Section: New York Metropolitan Section (Northeast Region) STATEMENT OF COMMITMENT: If this project is selected to receive an American Society of Highway Engineers National Project of the Year Award, at least one member of the project team will attend the awards luncheon.