Christopher Leedham, ODOT, spoke about the ongoing Oregon City Arch Bridge Rehabilitation including removal of gunite from the steel arch ribs, repairing the steel where needed, and recoating with shotcrete.
The Historic Bridge Alliance held its third webinar in the popular series on “Approaches to Historic Bridge Rehabilitation,” on January 18, filling up the 250 registration slots with state DOTs, consultants and SHPOs participating. This webinar series presents successful examples of historic bridge rehabilitation nationwide.
Four case studies of rehabilitation projects that preserved historically significant bridges included:
- Rehabilitation of the Washington Avenue Bridge (1902), a Pennsylvania thru truss in Waco, TX by Charles Walker, TxDOT
- Rehabilitation of the Phalen Park Bridge (1911), a concrete barrel arch with stone spandrel walls and railings in Saint Paul, MN by Steve Olson, Olson & Nesvold Engineers
- Preservation of the Fairview-Snodgrass Road Bridge (1913), a Pratt pin-connected, pony truss in Miami County, OH by Tom Barrett, Ohio DOT
- Rehabilitation of the West Linn Arch Bridge (1922), a steel through arch by Conde McCullough, Oregon City, OR by Christopher Leedham, Oregon DOT
The lively Q&A segment enabled the audience to ask experts about specific approaches to design issues and preservation compliance. Presenters graciously provided answers to questions received in the chat box that we couldn’t get to with the available time.
The webinar was cohosted by the Federal Highway Administration, MaryAnn Naber FPO, and Amy Squitieri, Chair of the Historic Bridge Alliance. The Alliance is an all-volunteer community of engineers, preservationists, historians, advocates and others working together to promote effective practices related to continued use of historic bridges.
For membership inquiries, copies of the recent presentations and/or the Q&A response, or to volunteer to present a project during a future webinar, please contact historicbridgealliance@meadhunt.com.
