Bridges
TRANSPORTATION
Design • Rehabilitation • Inspection • Rating
Bridge Engineering
Maguire Group
Introduction
M
aguire Group Inc. was founded over 70 years ago as a small civil engineering firm. Today, Maguire is a full-service, internationally recognized architectural, engineering, planning and construction management organization. Throughout its history, Maguire has played an important role in the planning, design and construction of the infrastructure used in our daily life for thousands of clients—from tiny towns to Fortune 500 companies—across the country and around the world. That role continues today as part of the Metric Engineering Group. Metric Engineering Group (MEG) is a leading U.S. engineering, architectural, construction and emergency management organization specializing in infrastructure and transportation for commercial, industrial and government clients. Today, MEG includes Metric Engineering, Maguire Group Inc., Dynamic Corporate Consultants Inc., and Advanced Transportation Engineering Consultants – over 500 dedicated professionals in 25 strategically located offices throughout the United States, Latin America, and the Caribbean. As part of the MEG Team, Maguire Group provides fullservice project delivery, from environmental planning and conceptual design to construction management and inspection. Our mission is to provide clients with the personal service and attention they would receive from a smaller, local firm, while delivering the experience and resources of a large, national firm capable of handling even the most complex projects.
Take a look... Maguire welcomes the opportunity to introduce our firm and its many capabilities. Since 1938, we have been providing design and engineering services to municipalities, county and regional agencies, private clients, state agencies and departments of transportation, and the federal government. Maguire has the technical and practical experience to meet all your transportation-related needs. Take a look at some of our past and ongoing bridge projects and you’ll see how we transform necessity and imagination into reality and innovation. It’s infrastructure for the real world.
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Bridge Engineering
Maguire Group
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Maguire uses the latest bridge software to facilitate our designs including the SAP Bridge Module, MDX™, FB-Pier, various ASHTOWare® software including Virtis, and all the PennDOT-approved software. Naturally, we have AutoCAD and Microstation capabilities.
Our construction services experience working for contractors gives us the contractor’s perspective and helps us with designing for constructability in our other work.
Expertise you trust... Service you deserve. Bridge Design Capabilities Steel network arches Concrete spandrel arches Steel truss bridges Steel trapezoidal box girders Pre-stressed concrete bulb tees Steel I-girders Pre-stressed concrete box beams Post-tensioned pier caps Drilled shafts Pile and spread footings LRFD steel and concrete design LRFR ratings Seismic analysis and design Accelerated bridge construction design
Design • Rehabilitation • Inspection • Rating
We have performed emergency services to assess failing bridge components and design shoring for immediate construction. We have the resources and the dedication to get the job done fast.
Bridge Engineering
he Maguire Bridge Engineering team has a wide variety of experience in the design, rehabilitation, inspection and rating of bridges and other structures. With over 70 years of experience in bridge design, we have performed the full range of bridge projects from long-span bridges to culverts, and from multi-million dollar interstate bridge designs to emergency inspections and shoring. We are responsive, innovative and dedicated to providing quality bridge engineering services for our clients.
Contractor Construction Services Excavation support Temporary shoring Temporary utility support Underdeck shielding Development of shop drawings Over our 70 years in business, Maguire has performed the full range of bridge projects, so it is safe to say if it’s a structural system—large or small—we have designed it, rehabilitated it, inspected and rated it, and even managed its construction.
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Design • Rehabilitation • Inspection • Rating
Bridge Engineering
Maguire Group
Bridge Design Case Study Project: Providence River Bridge (Iway Bridge) Design Owner: Rhode Island Department of Transportation Location: Providence, Rhode Island Project Type: Network Arch Bridge Design
T The 400-ft (120 m) network arch span being built in Quonset.
Span lifted on SPMTs to roll onto barges.
he innovative network arch span the Maguire Team designed for the Iway Bridge on behalf of the Rhode Island Department of Transportation (RIDOT) and the Federal Highway Administration (FWHA) represents a unique application of existing technology / techniques. Based on research into arch bridges with inclined cables, it was decided to use a network arch cable arrangement to save considerable amounts of steel weight for the design of the arch span. A network arch bridge is an arch bridge with inclined cables that cross more than once. Because moments are greatly reduced, arch and tie cross sections are very light. One unique feature of the bridge is the use of three arch ribs rather than the normal two. The bridge can carry five lanes of traffic in each direction and has a total width of 165 feet (50 m). Due to its large width, it was decided to use three arches and to use floorbeams to span between the ties. On site in Providence, RI, the bridge sits between the Fox Point Hurricane Barrier and a 100-year-old sewer siphon, so it was desired to keep the width to a minimum. The center arch for this bridge carries over half the load due to the rigid connection of the floorbeams to the ties. The floorbeams were attached to the tie with moment connections to prevent fatigue cracking. Other unique features include: • • • •
Span floated by tug-pushed barges 12 miles up Narragansett Bay.
First network arch built in the United States Saved 33% in structural steel costs over vertical cable options First skewed network arch bridge and first with 3 arches First major use of self-propelled modular transporters* (SPMTs) in Rhode Island • Float won 2008 NASTO (Northeastern Association of State Transportation Officials) Innovative Management Award given to the Rhode Island Department of Transportation (RIDOT) • The Iway Relocation and Bridge Project won the 2010 American Council of Engineering Companies (ACEC) Grand Conceptor Award regionally, and awaits final distinction for the national Engineering Excellence Awards competition The bridge was built in Quonset-Davisville, RI and then carefully transported by barge 12 miles up-river to Providence. In 2007, the "float" of the Maguire-designed bridge was featured on the History Channel’s Mega Movers program on “Really Big Bridges.”
Span set in place on separately built piers.
The finished bridge opened in November 2007 and is a prominent part of the entire Iway Project.
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Maguire Group
Network Arch Bridge Advantages • Ideal for 300’–1,500’ span range • Cost-effective: 30-60% possible steel cost savings • Inclined cables have smaller deflection than vertical cables option • Faster project completion possible: lighter weight allows moving - e.g., for concurrent bridge / foundation construction and eventual moving of the structure onto its foundation (whether over land, or, like the Iway Bridge, over water)
Before moving the 5.5-million-pound bridge, the bridge moving firm, Mammoet, needed to jack it up 30 feet (9.1 m) so that it would be high enough to slide onto the tops of the piers when it reached Providence. Mammoet used devices that are relatively new to U.S. construction: self-propelled modular transporters* (SPMTs). One of the SPMTs at Quonset was about 30 feet long with 48 wheels under it on hydraulic jacks that could raise or lower them and also adjust for bumps or changes in the ground level.
The two barges used for transporting the span were held apart by a pair of crane booms, forming a giant catamaran. They were docked with their sterns against the pier. The SPMTs moved the bridge onto the barges crosswise, with its ends overhanging the barges’ sides. In Providence, that arrangement let the barges pass between the piers while the ends of the bridge passed above the piers. Lowering the bridge set it in place on the piers.
The arch bridge opened for public use in November 2007 and is the most prominent part of Rhode Island’s largest transportation project (the relocation of a section of I-195 and its interchange with I-95). The bridge has garnered national attention for its construction innovation, but many love its sheer aesthetic beauty. This signature span, with its considerable architectural detailing, will be one of the most visible Providence landmarks for decades to come.
Design • Rehabilitation • Inspection • Rating
Instead of working from barges while piecing the bridge together over the river, the contractor could work on Pier 2 at Quonset – a flat area with plenty of work and storage space around it. In Providence, the nearby hurricane barrier barred access to large cranes from the north side. The contractor could not locate cranes big enough to reach all the way across the bridge from the south.
In the past, other bridges have been built on barges and transferred to construction sites, but rental cost of the barges can be high. The SPMTs allowed a short-term rental of the barges, saving the contractor significant money. In addition, using the SPMTs on barges facilitated final placement of the bridge near the hurricane barrier site constraint that prevented the use of cranes to erect the span.
Bridge Engineering
Building the bridge offsite was an ingenious way to address the extraordinary problems the Maguire Team faced in terms of site, location, hazardous conditions, and project requirements. While work was conducted on the respective beams or girders on both sides of the Providence River, down the Narragansett Bay in Quonset, teams began to work on and assemble the network arch itself.
* To review the Federal Highway Administration’s Manual on Use of Self-Propelled Modular Transporters to Remove and Replace Bridges visit: www.fhwa.dot.gov/bridge/pubs/07022/smpt_07_07.cfm#s713 Chapter 7.1.3 focuses on RIDOT’s Providence River Bridge (the Iway Bridge) and SPMTs
Maguire Group developed a unique position as experts with the time-saving and cost-effective techniques described in this Case Study. Learn how we can help you achieve similar success: Visit our website at: www.MaguireGroup.com
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Bridge Engineering
Maguire Group
Design • Rehabilitation • Inspection • Rating
Maguire provided bridge design services for the new Thread City Crossing, also known as the Frog Bridge, winning a National Partnership for Highway Quality Award. Aesthetic considerations were a high priority in the bridge design, and Maguire worked closely with Windham-Willimantic, CT officials to be sure the appearance of the bridge conveyed key images of local history, industry and heritage. Maguire has been Lead Consultant and Program Manager for the award-winning I-195 relocation project in Providence on behalf of RIDOT. The multi-year interstate relocation project involved 16 bridges and numerous roadways, ramps and abutters. It is due to be completed in 2012.
Maguire included unique design features that addressed the town’s objective to feature both frogs and thread manufacturing. Four 12-foot bronze frogs were designed, fabricated and placed on the precast concrete spools of thread at the bridge entrances. In addition to preliminary and final design for the roadway and bridge elements, Maguire conducted environmental studies, surveys/mapping, preliminary engineering studies, and architectural coordination and oversight.
Part of Maguire’s work on the I-195 relocation includes a pedestrian walkway over the interstate for local resident access to India Point Park and the waterfront. The highly architectural rigid-frame structure is designed to carry soil on top for plantings and for an ADA-accessible path connecting the bridge to India Point Park.
The new I-195 alignment in Providence eliminates left-hand exits and provides a straighter route, fewer ramps and a redesigned and relocated interchange between Interstates 195 and 95. Note the complexity of the geometric layout within a limited work area, and the integral pier cap and the structure curvatures.
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Maguire Group Bridge Design Projects
As part of the new McDaniel Drive Extension on the University of New Hampshire (UNH) Campus, Maguire was retained to design a new structure under the existing B&M Railroad tracks (Guilford Rail). These existing tracks connect Boston with Portland, Maine and provide for passenger service and a large amount of freight traffic. Maguire first determined the best choice for construction methods and construction type. Because of the existing track width available, cut-and-cover methods were used. A steel half-through girder type of bridge was selected because it offered the minimum structure depth, which minimized excavation and dewatering for the roadway beneath. Extensive coordination was required with railroads/ utilities to maintain rail traffic and service through the area during construction. Because of its campus location, the appearance of the bridge was very important. Architectural features include haunched girders, form liners, colored concrete, and dramatic lighting.
Design • Rehabilitation • Inspection • Rating
After completing extensive inspection and evaluation including concrete testing, design was performed for the rehabilitation of the Russo Memorial Bridge (also known as the Ashton Viaduct) to restore its structural, historic and aesthetic integrity. The bridge was demolished to the top of the arches and reconstructed using accelerated bridge construction techniques. The viaduct spans the Blackstone River and Canal as well as the main line of the Providence & Worcester Railroad. The bridge is a multi-span, reinforced-concrete structure consisting of five major open spandrel arch spans with shorter approach spans at each end. Overall length is ~900 feet (274m), with roadway width of 44 feet (13m) to carry four lanes of traffic. The bridge (constructed in the 1930s and 1940s) was declared eligible for the National Register of Historic Places and was also awarded a Best Rehabilitated Bridge Design Award from the Prestressed Concrete Institute.
Bridge Engineering
The Beaver River Bridge project is part of a total $154M reconstruction of the Pennsylvania Turnpike Commission’s Interstate 76 mainline, intended to improve the durability of the road, enhance safety, and increase capacity of the toll facility that runs the length of Pennsylvania. A feasibility study conducted by Maguire determined that total bridge replacement was necessary. The study also developed a conceptual construction-staging scheme and construction cost estimate. The project is now in Phase 2, with Maguire conducting preliminary design. Maguire is working to design the new bridge and associated roadways. The bridge will be expanded from 2 to 3 lanes, with a ramp in each direction, and include a reconfiguration of the Beaver Valley Interchange to eliminate one or both of the existing interchange ramp bridges and create a more conventional interchange connection with State Route 18. The replacement of three overhead bridges directly to the west of the Beaver Valley Interchange will also be included. The third phase will be final design, and the project is expected to be completed by 2013.
As part of Boston’s Central Artery/Tunnel (CA/T) project, the interchange between the Mass Pike (I-90) and the Central Artery (I-93) was completely rebuilt on multiple levels (two of which are subterranean) to connect with the underground I-93/I-90 extension through South Boston. As part of a joint venture, Maguire was responsible for final design of the I-90/I-93 interchange and I-93 northbound (Section D009A). Section D009A was one of CA/T’s most technically complex final design sections, requiring intense coordination with adjacent section design consultants, state and federal transportation agencies, and abutting communities. This interchange consists of mainline highways, ramps, frontage roads, commuter rail lines and local streets. It includes the direct freeway-to-freeway interchange between the I-93 and I-90 roadways, which serves as one of Boston’s main gateways, and required strict compliance with aesthetic goals developed for the CA/T project as a whole.
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TRANSPORTATION
Maguire is more than you know.
Photography: Frank Giuliani and Maguire Staff
Architects • Engineers • Planners A Metric Engineering Group Company
Bridges
For more information on Maguire Group locations and our wide range of services, visit our website: www.MaguireGroup.com