Category: Events - General Five Million Pound Utah Bridge Slide

September 21, 2023 1:00 pm

Cheryl Hersh Simmons, S.E., Chief Structural Engineer, Utah Department of Transportation; Logan Julander, P.E., Structures Manager, Michael Baker International; and Jim Deschenes, S.E., Director of Alternative Delivery, Ralph L. Wadsworth Construction

Webinar Documents:
Five Million Pound Utah Bridge Slide - pdf of presentation
Time Lapse Construction Video (courtesy of Ralph L. Wadsworth Construction)
UDOT ABC Decision Making Tool - website link (Note: Click "ABC Rating Procedure Spreadsheet and Decision Flow Chart (0.12 MB)" to download the Excel file.)
Q&A Session - pdf
News - September 21, 2022 - pdf of presentation

Description: The Utah Department of Transportation replaced several bridges as part of the I-80 & I-215 Renewed design-build project on the East side of Salt Lake City that began construction in 2021 and is finishing up this year. The project used lateral slides to replace two bridges, a temporary bridge to facilitate phased replacement of two other bridges, and also includes a bridge widening. This presentation focuses on interesting aspects of one of the bridge slide replacements: 1300 East over I-80. The new 173-foot-long and 125-foot-wide single-span bridge replaced a four-span structure originally constructed in the 1960s. A weekend closure provided time for the slide to take place. This presentation gives an overview of the planning, design, and construction techniques developed from several previous slides to carry out the installation of this large structure within a limited time-frame.



Cheryl Hersh Simmons, S.E.
Chief Structural Engineer
Utah Department of Transportation

Cheryl is the Utah State Bridge Engineer and Chair of the AASHTO Technical Committee for Construction under the Committee on Bridges and Structures. She is also a member of the ABC-UTC Advisory Committee. Prior to joining UDOT in 2013, she spent over 23 years in the private sector focusing on project delivery and construction as a designer, resident engineer, project manager, and design quality manager on a number of fast-track design-build projects. Cheryl is a native of Maryland and earned her B.S. in Civil Engineering from Duke University and her M.S. in Structural Engineering from University of Virginia.


Logan Julander, P.E.
Structures Manager
Michael Baker International

Logan has 14 years of structures design and management experience in heavy highway and transportation projects. He is a graduate of Utah State University with a B.S. and M.S. in Structural Engineering. Since graduating Logan has spent his career working at Michael Baker International where he has been involved in multiple ABC projects, writing the ABC chapter for the Wisconsin DOT Bridge Manual, and in developing the Slide-in Bridge Construction Implementation Guide for FHWA.


Jim Deschenes, S.E.
Director of Alternative Delivery
Ralph L. Wadsworth Construction


Jim has a B.S. in Civil Engineering degree from the University of New Hampshire and a Master’s Degree from the University of Missouri-Rolla, now Missouri S&T. He started his career at FHWA before spending 20 years in the consulting engineering business, primarily focused on design-build delivery projects. Jim has spent the last 10 years at Ralph L. Wadsworth Construction, as the Director of Alternative Delivery. He has experience on a number of bridge slides and self-propelled modular transporter (SPMT) bridge moves.

Presentation Photos/Graphics:

1) Day aerial view prior to slide

2) Leading edge guide

3) Slide pads with shoe

4) Night aerial view during slide