Wednesday, June 9, 2021
Design, Part 2 Session
This session will address leading-edge topics that are important to all bridge engineers as we continuously implement innovative practices. These topics include use of BIM in the delivery of bridge projects, important changes related to the installation and design of high-strength bolts, innovative approaches for component replacements on highly traveled bridges, guidelines for bridges that may be susceptible to fire exposure, as well as MASH crash testing of new bridge barriers.
Session Chair: Brandon Chavel, National Steel Bridge Alliance, Rocky River, OH
Time: 9:00 AM – 12:00 Noon
IBC 21-27: BIM for Bridges and Structures Case Study: Outcomes and Lessons Learned from the Steel Bridge Industry
Aaron Costin, University of Florida, Gainesville, FL; Hanjin Hu, Michael Baker International, Moon Township, PA; Ronald Medlock, High Steel Structures LLC, Lancaster, PA
The recent push to adopt building information modeling (BIM) for bridges and structures in the transportation industry has encountered major barriers due to the lack of standardization. Unlike the building industry that has the U.S. National BIM (NBIMS) standard as a formal open platform standard and guide for the development of interoperable BIM software, the transportation industry does not currently have a similar open platform standard to enable the creation of interoperable BIM software to serve the needs of transportation stakeholders. The purpose of this paper is to present the findings of the research for one of the first use cases and development of data exchange requirements and model view definitions in adopting the open platform National BIM standard applied to Bridges and Structures for the U.S. transportation industry.
IBC 21-28: Using Innovative Design to Meet the Needs of Stakeholders
George Tawfik, STV, New York, NY
As a major nexus serving two of the busiest highways in the Northeast, shutting down a portion of the Alexander Hamilton Bridge Interchange would adversely impact traffic along the entire I-95 corridor. Our team developed an innovative approach averting any shutdowns while replacing the deck and substructure. This approach eliminates the need for future closures and improved operations and safety. The project was completed successfully on time and on budget and has won multiple awards.
IBC 21-29: Instrumentation Results of New MASH Crash Tested Barriers for William P. Lane, Jr. Bridge
Travis Hopper, P.E., Scott Eshenaur, and Maria Lopez, Modjeski and Masters, Mechanicsburg, PA
Two new bridge barriers were crash tested in accordance with AASHTO MASH guidelines for future use on the William P. Lane Bridge over the Chesapeake Bay. Instrumentation was used to measure forces in anchor bolts, dynamic deflection, strain in reinforcement, and strain in steel plates. This paper presents the analysis results of the force, strain, and displacement data measured in the barrier and deck structural components during crash load testing.
IBC 21-30: Using 3D Models to Improve Bridge Design and Deliver Better Projects
Michael Alestra, P.E., Pennoni, Neward, DE; Scott Walls, P.E., Delaware DOT, Dover, DE
Bridge 1-447 Taylor’s Bridge Road (SR-9) over Blackbird Creek in New Castle County, Delaware. This project highlights using a 3D model of the bridge and roadway as a valuable design tool. 3D BIM models were developed of the existing structure, proposed structure, and proposed roadway and grading. The bridge models are being used directly for bridge plan development, quantities, and reinforcement detailing and scheduling.
IBC 21-31: Important Changes in the 2020 RCSC Specification for Structural Joints Using High-Strength Bolts
Jeff Greene, LeJeune Bolt Company, Burnsville, MN
This paper will present an update on structural fasteners with a focus on changes introduced in the new 2020 RCSC Specification for Structural Joints Using High-Strength Bolts. While there are numerous changes to the specification this paper will address a limited scope of topics including new installation methods and changes to existing installation methods, the addition of strengths groups and inclusion of group 144, short bolt use, EOR responsibility, and alternative design requirements.
IBC 21-32: Analysis of Steel Composite Bridges Exposed to LRT Fire – A Performance-Based Design
Aguiade Drak El Sebai, P.E., and Aurelie Noubissie, AECOM, Montreal, QC, Canada; Firooz Panah, AECOM, Boston, MA; Patrick Oatway, AECOM, Richmond Hill, ON, Canada
This study proposes guidelines on analyzing steel composite bridges exposed to train fires by applying a performance-based design. Two bridges, a 24m. long simple span with fixed-free bearing articulation and a 22m. long simple span with fixed-fixed bearing articulation, were analyzed for train fire exposure from underneath. Results show that while the steel strength properties drop with increased temperature, the temperature loading may be accommodated with post failure criteria and proper detailing avoiding an overall collapse.
Rehabilitation, Part 2 Session
Presentations highlight developing bridge rehabilitation expertise featuring topics that will interest owners, analysts, designers and constructors. Included are: fire repairs, suspension bridge cable preservation, UHPC overlays and rocker link replacements, overheight truck damage inspection and repairs, and fatigue crack instrumentation and retrofit. Projects include: Brent Spence Bridge over the Ohio River (Kentucky, Ohio); Chesapeake Bay Bridge (Maryland); Delaware Memorial Bridge (Delaware and New Jersey); I-895 over Frankfurt Avenue (Maryland); and I-95/I-395 (Maryland).
Session Chair: Elliott Mandel, P.E., AECOM, Arlington, VA
Time: 9:00 AM – 12:00 Noon
IBC 21-33: Brent Spence Bridge Fire and Rehabilitation
Aaron Stover, P.E., S.E. and Jason Stith, Ph.D., P.E., S.E., Michael Baker International, Louisville, KY; Josh Rogers, P.E., CBI, Kentucky Transportation Cabinet, Frankfort, KY; Frank Russo, Ph.D., P.E., Michael Baker International, Philadelphia, PA; Cory Wilson, Kentucky Transportation Cabinet, Covington, KY
After a major fire on November 11th 2020, a rapid assessment of the condition of this high-ADT I-71/I-75 bridge over the Ohio River was required to ensure public safety. Amid uncertainty of the extent of damage caused by the fire, a team comprised of KYTC, ODOT, Michael Baker, and Kokosing Construction carried out emergency repairs to the bridge. This presentation will highlight the keys to successfully opening the structure in 41 days.
IBC 21-34: Transfer of Loading from Existing Main Cable to Supplemental Cables
Jonathan Morey and Will Conlon, WSP USA, Edgewood, MD; Abey Tamrat, MDTA, Dundalk, MD
The Maryland Transportation Authority (MDTA) owns and operates the Chesapeake Bay Bridge, a twin suspension bridge crossing that connects Annapolis to Maryland’s eastern shore. The Eastbound (EB) and Westbound (WB) suspension bridges opened in 1952 and 1973, respectively. The Westbound span’s main cables were constructed of Prefabricated Parallel Wire Strands (PPWS) with cable straps and a neoprene wrapping system. In 2009-2013, in-depth main cable investigations were performed and recommendations were made to extend the service-life of the suspension systems. In 2014-2015, main cable dehumidification systems were installed on both the Eastbound and Westbound Bridges, as the first preservation measure.
IBC 21-35: The First Ultra High Performance Concrete (UHPC) Bridge Deck Overlay on a Major Suspension Bridge in the United
Shekhar Scindia, Deleware River and Bay Authority, New Castle, DE ; Abate Tewelde, Michael McDonagh, Jordy Padilla and Andy Foden, WSP USA, Lawrence Township, NJ
The Delaware Memorial Bridge, composed of twin suspension bridges completed in 1951 and 1968, carries Interstate 295 and U.S. 40 across the Delaware River between Delaware and New Jersey. In 2018, the Delaware River and Bay Authority (DRBA) determined that the deck of the first structure was near the end of its service life. Through a 50-year lifecycle cost analysis, a partial-depth deck replacement overlay utilizing Ultra-High Performance Concrete (UHPC) was identified as the preferred alternative to deck replacement and conventional overlays. The mechanical and durability properties of UHPC significantly exceed the properties of conventional concrete and overlay materials, such that UHPC can dramatically extend the service life of the existing deck with minimal traffic impacts compared to deck replacement.
IBC 21-36: Rocker Link Replacement Quality Controls
Jonathan Morey and William Conlon, WSP USA, Edgewood, MD; Abey Tamrat, MDTA, Dundalk, MD; William Conlon, WSP USA, Edgewood, MD
The Maryland Transportation Authority (MDTA) owns and operates the Chesapeake Bay Bridge, a twin suspension bridge crossing that connect Annapolis to Maryland’s eastern shore. Both the Eastbound (EB) and Westbound (WB) bridge suspension spans utilize pinned rocker link assemblies as support below the stiffening trusses ends at the towers. The end of service life of these elements was approaching due to wear from continual movements. Similar replacements were designed and implemented for both the EB and WB suspension spans. The designs incorporated jacking to re-establish original clearances at tower wind shear devices, while maintaining finger joint alignment, and also allowed for variations to control interfaces between existing and new components. Installation procedures and controls ensured that North and South Rocker Links at the same panel points provided identical length of rotation. In-line boring, used on the Westbound Bridge, allowed the overall pin assembly to make use of the large existing pin plates.
IBC 21-37: Emergency Repair of I-895 over Frankfurst Ave. by Cut Out and Replace
Marcus Gursky, P.E., Whitney Bailey Cox & Magnani, LLC, Baltimore, MD; Tekeste Amare, P.E., Maryland Transportation Authority, Baltimore, MD; Michael Alestra, P.E., Pennoni Associates Inc., Newark, DE
The I-895 bridge over Frankfurst Avenue, owned and operated by the Maryland Transportation Authority, was struck by an overheight truck causing extensive damage to the exterior beam. This paper will cover the inspection effort, the damage found, the use of laser scanning for precision field measurement and how it was utilized in design, the design including carrier beam, built up replacement section and heat straightening, and the construction of repairs and the lessons learned.
IBC 21-38: Evaluation, Instrumentation & Retrofit of the Distortion-Induced Fatigue Cracking in the I-95/I-395 Steel Box Girder
Christopher Smith, P.E. and David Barrett, P.E., Modjeski and Masters, Inc., Mechanicsburg, PA; Tekeste Amare, P.E., Maryland Transportation Authority, Baltimore, MD; Laura Magoon, P.E., RK&K, Baltimore, MD
A portion of the I-95/I-395 corridor through Baltimore, Maryland, is carried on steel box girder bridges. Routine inspections revealed numerous cracks within the girder webs at cross-frame connection plate locations. An instrumentation plan was implemented to investigate the root cause of the cracking followed by the development of a retrofit strategy. This paper details the comprehensive instrumentation plan and various retrofits evaluated to address the cracking and extend the remaining service life of these bridges.
W08: Accelerated and Innovative Bridge Construction in Seismic Regions
Bijan Khaleghi, Washington State DOT, Olympia, WA
Time: 8:00 AM – 12:00 Noon
This workshop focuses on the performance of bridges built using ABC technologies in seismic regions, with emphasis on post-earthquake functionality and serviceability. This workshop exhibits ABC technologies with self-centering concrete columns and piers in seismic regions. Recent innovations in bridge design and construction meeting the post-earthquake functionality and serviceability requirements are presented. This workshop provides an opportunity for exchange of the state-of-the-art information in research and implementation of ABC in seismic regions with resiliency considerations.
W09: Diversity Workshop
Jennifer Howe, Trumbull Corporation; Tanya Adams, WSP; Rep. Eric Morrison, State of Delaware; Shantae Hastings, Delaware DOT; Meghann O’Connor (Moderator)
Time: 8:00 – 10:00 AM
This workshop will involve a panel discussion with representatives from a state DOT, state legislator, a bridge contractor and a consulting firm. The questions being answered will involve how each organization handles Diversity, Equity and Inclusion(DEI) within the transportation industry and state government . They will share any initiatives, training ,employee surveys/focus groups to better adopt DEI practices.