2021 National Conference Going Virtual Pocono Mountains PA

"The mission of the American Society of Highway Engineers is to provide a forum for members and partners of the highway industry to promote a safe, efficient and sustainable transportation system through education, innovation and fellowship."

ASHE 2021 National Conference

Join us for a Virtual Conference

May 25 - May 27, 2021

View the Conference Final Report

View the Conference Program Book

Recorded Technical Sessions are now available on our Conference Program Page.


Session 2, Track 3

An ABC Success Story: Blackhall Road over Rum Creek

Accelerated Bridge Construction (ABC) methods can drastically improve an outcome for the client and community. BlackHall Road (CR661) over Rum Creek, located south of Atlanta in Henry County, GA, is a two-lane collector that provides access between suburbs and primary arterial and interstate accesses in the region. This project involved the removal and replacement of a structurally deficient bridge carrying CR661 over Rum Creek. The project site is tightly constrained by residential land uses and the 600-acre Lake Spivey. An earthen dam impounds Lake Spivey with a concrete spillway, immediately upstream of the bridge, forming the headwater of Rum Creek. The existing 108-foot, three-span pile bent supported bridge was replaced with a 195-foot, three-span structure, including a 93-foot long main channel span using innovative ABC methods and materials. The project initially assumed a 9-month road closure and off-site detour. Responding to public input, innovative ABC techniques were implemented that reduced the road closure to just 60 days.

Thomas P. Karis, P.E., Chief Engineer; CHA Consulting, Inc. - Albany, NY  

Tom Karis, PE, is Chief Engineer of Infrastructure at CHA Consulting, Inc. (CHA) with 36 years of transportation infrastructure design, construction, and management experience. A graduate of Clarkson University and beginning his professional career with CHA in 1986 he has moved from New York to Georgia to Indianapolis and now resides in Charlotte, North Carolina.  A registered professional in 17 states, Tom has advanced his career through his pragmatic approach to problem-solving, comprehensive knowledge of transportation policies and procedures, prudent decision-making, and advocacy and mentoring of young professionals. Throughout his career, he has subscribed to a management style and leadership philosophy that his success is measured by the success of those around him.