Engineers' Society of Western Pennsylvania


337 Fourth Avenue
Pittsburgh, PA 15222

Phone: (412) 261-0710 Email: Get Directions

Monday, June 7, 2021

Special Sessions

Urban Cap Special Session

Session Chair: Gary A. Runco, P.E., Virginia Department of Transportation, Fairfax, VA
Time: 8:00 – 10:00 AM

IBC 21-SS02: Creating a Park over an Interstate: History, Owner’s Perspective, and a Bridge to Renewal in the City of Pittsburgh
Zachary Workman, P.E., City of Pittsburgh, Pittsburgh, PA; Dan McDowell

Attendees will learn basics of the Preliminary Land Development Plan (PLDP) process as well as elements of a federal transportation grant application. They will also be introduced to owner concerns during construction and operation of municipal infrastructure, as well as how capital improvements fit into a city government’s long range plan.

IBC 21-SS03: Creating a Park over an Interstate: Park features, design, and community involvement
Dan McDowell, RLA, LaQuatra Bonci Associates, Pittsburgh, PA

The I-579 CAP Park is a unique project that grew out of a Master Plan for an old arena site. In the master plan, a park was suggested to span an interstate that severed the historic African-American neighborhood from its connectivity. An extensive public process was organized to program the park and select local artists. The park was to recognize the historic and cultural aspects of the historic Lower Hill neighborhood.

IBC 21-SS01: Creating a Park over an Interstate: Design of Pittsburgh’s Urban Cap Project
Nick Burdette, P.E., HDR, Pittsburgh, PA; Roger Eaton, P.E., HDR, Pittsburgh, PA

Beneath this new park over I-579 is an adjacent box beam structure designed to fit in the extremely congested urban site and connect to existing adjacent bridges. This unique structure required project-specific load considerations and micropile foundations to avoid increasing loads on the existing interstate retaining walls, as well as slender piers constructed in narrow gore areas inches from existing foundations. Extensive redundant waterproofing systems were utilized to protect the structure from the park soil.

IBC 21-SS04: Creating a Park over an Interstate: Construction of a 3-acre Green Space in Downtown Pittsburgh
Kyle Smith, P.E., HDR, Pittsburgh, PA; Dan McDowell, LaQuatra Bonci Associates; Zachary Workman, City of Pittsburgh

The I-579 “Cap” Structure is a new urban park in Pittsburgh, Pennsylvania. The park surface will be constructed on top of a new structure that spans over the interstate highway below. The congested urban site presented many challenges including dozens of utilities, limited space to construct foundations, and delivery and erection of 126 unique adjacent box beams during brief interstate closures. Additional construction challenges for this project included the use of unique products and materials.

BIM Special Session

This session describes how state DOTs are moving to data-based workflows, including examples of how 3D models are being used for bridge design, construction, and asset management.

Session Chair: Ronald D. Medlock, P.E., High Steel Structures, Lancaster, PA
Time: 8:00 – 10:00 AM

IBC 21-SS05: Building Information Modeling (BIM) for Bridges and Structures
Ahmad Abu-Hawash, Iowa DOT, Ames, IA

Building Information Modeling for bridges and structures is a national initiative for managing transportation assets. This presentation will discuss the ongoing efforts by state DOTs and AASHTO for the adoption of BIM as a life cycle management strategy. Also, the benefits of BIM in design, fabrication, construction, and asset management will be discussed.

IBC 21-SS06: PennDOT Central Office- PennDOT’s Planless 2025 program
Allen Melley, Pennsylvania DOT, Harrisburg, PA

This presentation will provide an update on PennDOT’s Digital Delivery Directive 2025. In this presentation audience members will be given an overview of PennDOT’s strategic plan for advancing digital delivery, discuss how bridges are addressed in the plan, and provide some examples of how this will affect delivery of PennDOT bridge projects.

IBC 21-SS07: NYSDOT 3 D Bridge Modeling Effort
Brenda Crudele, P.E., New York State DOT

Traditionally 2D plan sheets have been the only format legally allowed for contractual work for NYSDOT projects.  Model Based Contracting is an innovative approach where contractual work can legally be specified with electronic data, allowing for a digital information exchange. between design and construction.  Currently, NYSDOT is in the final phases of construction for its first pilot project and has just finished design of its second pilot project.  The process developed and the Pilot Projects and will be discussed.

IBC 21-SS08: After BIM: Use of Digital Twins in Bridge Projects
Alexander Mabrich, P.E., MSc, MBA, PMP, Bentley Systems, Fort Lauderdale, FL; JP Gauthier, Bentley Systems, Sunrise, FL; Burak Boyaci, P.E., Bentley Systems, Sunrise, FL

As Building information modeling (BIM), a technology being used in the bridge construction industry, owners are realizing than the information stored in the 3D model needs to interact with the various stakeholders of the project. A true BIM model for bridge structures improve design quality with a better representation of the design intent of the engineer rather than creating 2D drawings, constructability, and collaboration. However, a bridge project is not an isolated one. It includes multiple disciplines that need to collaborate in real time as their feedback could be crucial in the constructability of the bridge: utility conflicts, soil conditions, roadway geometry, overhead structures, traffic flows, environmental factors, social impact.
The purpose of this paper is to present the advantages of using Digital Twins to provide the missing element of human interaction with the BIM models. A Digital Twin, that starts with a 3D model, rich with information, and gets updated constantly depending on the phase of the project: design, construction and operation.

Railroad Special Session

Session Chair: John C. Dietrick, P.E., S.E., Michael Baker International, Cleveland, OH
Time: 10:00 AM – 12:00 PM

IBC 21-SS09: New Kensington Bridge Railroad Coordination
Thomas Anthony, P.E., CBSI, The Markosky Engineering Group, Inc., Ligonier, PA

The New Kensington Bridge is a 14 span through truss structure over the Allegheny River and Norfolk Southern in Allegheny County, PA. The project is a bridge preservation which includes steel repairs, painting, and other repairs. The presentation will discuss coordination with Norfolk Southern which was started early in preliminary engineering to obtain concurrence on temporary clearance restrictions, to address contractor access, and to initiate the ROW process for temporary construction easements.

IBC 21–SS10: SEPTA’s Right-of-Entry System: Safety, Coordination, and Planning on the Railroad
David T. Montvydas, SEPTA, Philadelphia, PA

Interagency coordination between SEPTA and other railroads, other agencies, and private property owners is a daily occurrence. Our goal is to get each agency or property owner what they want (inspection, maintenance, and construction) while SEPTA preserves the highest levels of safety, service, and our ability to maintain the system. We achieve this through constant communication, clear guidelines, and combining efforts among differing agencies to get the most work completed in the shortest, most efficient timeframes. This is done through our Right-of-Entry System.

Construction Special Session

This session includes challenges and innovative construction of four projects presented by the Owner, Designer and Contractor.  Projects include accelerated construction techniques used to complete a bridge in 9 days.   The use and benefits of Polyester Polymer Concrete for bridge decks will be discussed.    Another partnered efforts to address deck cracking on a new bridge.  A Project team will discuss working together to solve design details and constructability items on a tied arch pedestrian bridge .

Session Chair: Kevin E. Duris, P.E., Trumbull Corp., Pittsburgh, PA
Time: 10:00 AM – 12:00 PM

IBC 21-SS13: Replacement of Bridge 3-507 on US113
Jason Hastings, MCE, P.E., and Jonathan Karam, Delaware DOT; Alan Young, Mumford and Miller
The replacement of Bridge 3-507 on US113 in Millsboro, Delaware, required accelerated construction techniques to complete the replacement in 9 days due to the impacts of traffic on local residents and businesses. The project was a huge success due to the coordination efforts both in design, between owner/designer and local officials, and in construction, between owner/designer and the contractor. This presentation will hit on these efforts that led to the success of the project.

IBC 21-SS14: The use of Polyester Polymer Concrete on the Pennsylvania Rapid Bridge Replacement Project
Ed Dice, Plenary Group; Jason Fuller, HDR; Kevin Crist, The Walsh Group

Polyester Polymer Concrete (PPC) is an innovative technique used on 357 box beam bridge structures included on the Rapid Bridge Replacement Project. The use of PPC on bridge decks was incorporated into the project as an Alternate Technical Concept due to the reduction in long-term maintenance costs. PPC’s impermeability reduces costs from corrosion inducted damages, durability eliminates the costs of intermediate overlays and the longevity of skid resistance reduces long-term costs. PPC has an expected useful life of 30 years or more and prolongs the life expectance of the bridge by preventing moisture and corrosive substances from penetrating the deck.

IBC 21-SS15: Pennsylvania Turnpike Commission Bridge SB-257 Deck Crack Repairs
Dale Rosinski, P.E., and Allan Schuck, EIT, CDR Maguire, Inc.; Scott Rolley, P.E., PMP, WSP USA; Ray Reed, Mekis Construction

The Pennsylvania Turnpike Commission’s Southern Beltway Project consists of all new construction of 13-miles of limited access toll road and 27 bridges in Washington and Allegheny Counties. This presentation provides insight from the perspective of the owner (PTC), designer (WSP), and subcontractor (Mekis Construction) through their partnered efforts to develop a practical and economical solution to address transverse deck cracking.

IBC 21-SS16: Construction of a Tied Arch Pedestrian Bridge – Winston-Salem I-40 Business Reconstruction Project
Rodney Money, HDR; Jason Mroz, Flatiron; Larry Shaver, North Carolina DOT

As part of the Winston-Salem I-40 Business Reconstruction Project, the Green Street pedestrian bridge is a highly intricate, unbraced, tied arch structure with two sets of inclined arches. The complexity of this bridge required careful details and construction sequencing. This bridge is a signature structure for the City of Winston-Salem and provides pedestrian connectivity to the City’s multi-use path. To design and construct this unique structure, all parties – from designers, contractors, and owners – had to work together on design details, constructability items, reviews, and scheduling.


W01: Los Angeles World Airports Automated People Mover – Elevated Guideway
Chester Werts, P.E., S.E., P.Eng., Greg Knutson, and Anthony Messmer, HDR

Time: 10:00 AM – 12:00 Noon

The $1.95B Automated People Mover (APM) is a 2.25-mile elevated guideway train system and the centerpiece of Los Angeles International Airport’s (LAX) Landside Access Modernization Program (LAMP). Project scope includes the design and construction of a guideway structure, five passenger stations, and a Maintenance and Storage Facility. An overview of the project, seismic analyses, hybrid CIP segmental box girders, and modeling/design techniques used to mitigate vehicle roll-over during seismic events will be discussed.