Tunstall Engineering Group has Professional Engineering Licenses in 14 states across the U.S.
Executive Team
Shawn Tunstall, PE
President
Shawn has more than 20 years of experience in structural engineering. His background ranges from designing new concrete and steel girder bridges to the rehabilitation of existing historic truss bridges.
Shawn’s experience spans the entire engineering and construction process, including bridge inspection and rating, finite element modeling and analysis, preliminary and final design, and construction engineering. His construction engineering experience includes the erection of complex curved steel girder bridges. He has published papers and presented at numerous conferences, including:
"Pennsylvania Turnpike Bridge WB-224B - Sliding Into the Future of Transportation"
Co-authored paper, International Bridge Conference, National Harbor, Maryland, 2018.
“Corpus Christi Harbor Bridge Rehabilitation."
Co-authored paper, International Bridge Conference, Pittsburgh, PA, June 2010.
“Rehabilitating the Shippingport Bridge for the Present and Future."
Co-authored paper, International Bridge Conference, Pittsburgh, PA, June 2010.
“Construction Engineering Considerations for Highway Bridges."
Presented and co-authored paper, New York City Bridge Conference, New York, NY, August 2009.
“Erection Schemes for Curved Steel I-Girder Bridges – What Structural Engineers Need to Know."
Co-authored article, Structural Engineer Magazine, June 2009.
“Erection Engineering Considerations for Curved Girder Bridges."
Presented and co-authored paper, International Bridge Conference, Pittsburgh, PA, June 2008.
“Stabilization of a Two-Girder Pedestrian Bridge."
Presented and co-authored paper, International Bridge Conference, Pittsburgh, PA, June 2007.
“Eklutna River Bridge Rehabilitation: Preserving the Historic Old Glenn Highway Crossing."
Presented and co-authored paper, published in Conference Proceedings of 2004 Structures Congress, Nashville, Tennessee, May 2004.
Lateral Bracing Concerns for Long Span Steel Girder Bridges
Co-authored paper, Pittsburgh Engineer, Summer 2019.
Pat Gaynor, PE
Senior Structural Engineer
Pat has more than 20 years of experience in structural engineering with a career focused on bridge design. He has been involved in construction engineering for contractors and the design of structures.
Pat's construction engineering experience includes designing temporary works, including cofferdams, support of excavation, and falsework design - including towers and jacking brackets. He is also experienced in designing erection and demolition plans for simple and complex steel bridges and excavation design - including braced excavations, soil and rock anchors, anchor wall tie-backs, soldier pile and lagging, sheet piling, and secant piles.
Throughout his career, Pat has been instrumental in substructure and deep foundation design, bridge rehabilitation, and the design and rating of curved and straight steel plate girder bridges, pre-stressed concrete beam bridges, concrete cut and cover tunnels and portals.
Brodie Claybaugh, PE
Senior Structural Engineer
Brodie has 18 years of experience in designing bridges and has performed many bridge jacking and erection procedures throughout his career. He also has experience with steel building erection and critical lift plans. In addition, Brodie spent part of his career working as an internal engineer for a steel erector, giving him unique practical experience.
Peter Quinn, PE
Senior Structural Engineer
Pete is a senior structural engineer with 15 years of experience in bridge design and has performed both construction engineering and up-front bridge design. In addition, he has significant experience in contractor support services, including bridge design support and excavation support design. He also worked on the erection engineering support for the Hulton Bridge over the Allegheny River, in which the main span was strand jacked into position. Pete is located in the Philadelphia area.
Lateral Bracing Concerns for Long Span Steel Girder Bridges
Co-authored paper, Pittsburgh Engineer, Summer 2019.
Inelastic Response of a Steel Girder Bridge
Presented and Co-authored paper, Section International Conference on Bridge Maintenance, Safety, and Management, Kyoto, Japan, 2004.
Load Rating by Load and Resistance Factor Evaluation Method
Co-authored paper, NCHRP Project 20-01/Task 122, 2004.
Understanding Steel Bridge Behavior Through Destructive Testing
Authored Masters Thesis, University of Delaware, 2005.
Jarid Antonio, PE
Senior Structural Engineer & Design-Build Lead
Jarid has over 10 years of experience in bridge design and construction engineering, specializing in design-build and alternate design projects. Experience includes designing short and long-span structures, various substructure types, retaining walls, bridge rehabilitation, erection plans, demolition plans, shoring walls, and finite element analysis for complex and curved steel structures. Jarid has authored and presented his work on the following topics:
CSVT River Bridge - Steel Superstructure Design and Optimization (IBC 18-6)
Co-presented and co-authored paper, International Bridge Conference, National Harbor, Maryland, 2018.
Liberty Bridge Emergency Jacking Frame Design for Repair of Fire-Damaged Member (IBC 17-6)
Co-presented and co-authored paper, International Bridge Conference, National Harbor, Maryland, 2017.
Austin Uric, E.I.T.
Entry-Level Structural Engineer
Austin graduated from the University of Pittsburgh at Johnstown with a degree in Civil Engineering. He has construction-related internship experience and has served as a leader in many construction engineering-related student organizations at UPJ.