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2025 ACEC-NH & NHDOT Technical Exchange Conference
Thursday April 17, 2025 10:00am - 11:00am EDT
Session 1A: Lyme-Thetford Bridge - Lessons Learned
Speaker: Jeff Potter, NHDOT
- This session highlights the rehabilitation process for the Lyme-Thetford bridge with highlights on the public outreach, painting process, conditions after grit blasting of the 1937 structure, repairs to the truss members, and lessons learned in the process. The presentation will also give a quick overview of the cofferdam utilized to repair the pier which was floated into place and attached to the pier.

Session 1B: Innovative Combination of Prefabricated Bridge Elements and Conventional Construction Provides Economical Solution for Aging Infrastructure
Speakers: Sam White, McFarland Johnson; Jim Bowles, NHDOT
- Within a six-week roadway closure, this project replaced the superstructure and rehabilitated the foundations on the bridge carrying NH 113A over the Swift River in Tamworth, NH. The long detour (25 miles) warranted accelerated construction; however, low roadway user numbers did not support the added expense of fully committing to an Accelerated Bridge Construction (ABC) approach. The solution for this project was an ABC “lite” approach that economically blended the use of Prefabricated Bridge Elements (PBEs) with conventional construction techniques. Attendees of this presentation will benefit by learning how techniques traditionally reserved for ABC can be applied on routine projects to improve project delivery. 


Moderators
avatar for Robert Faulkner, PE

Robert Faulkner, PE

Vice President, CHA Consulting
Robert (Rob) is a transportation engineer with 38 years of experience. Since he joined CHA in 1996, he has dedicated the majority of his career to working on and managing CHA’s projects performed for the New Hampshire Department of Transportation. He has extensive experience designing... Read More →
Speakers
avatar for Jim Bowles, PE

Jim Bowles, PE

District Construction Engineer, New Hampshire Department of Transportation
Jim has been with the Bureau of Construction since 1985.  Three months after being hired by NHDOT Jim became a Resident Engineer and spent the next 15 years running road, bridge, water, sewer, building, railroad, and airport projects.  For the remaining 24 plus years he has been... Read More →
JP

Jeff Potter

Civil Engineer IV, New Hampshire Department of Transportation
Jeffery Potter is a Civil Engineer IV with NHDOT in the Construction Bureau and serves as a Contract Administrator for the Department.  He has been with the Department for 15 years and has been the CA on several bridge projects including the Shaker Bridge Replacement in Enfield NH... Read More →
avatar for Sam White

Sam White

Project Manager & Senior Bridge Engineer, McFarland Johnson
Sam, a New Hampshire native, brings 13+ years of expertise in bridge design, load rating, and inspection for state agencies and municipalities. As the leader of MJ’s New Hampshire bridge design group, Sam oversees complex bridge projects bringing an innovative yet practical approach... Read More →
Thursday April 17, 2025 10:00am - 11:00am EDT
Salon A/B

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