In This Issue
This is a link to National Cooperative Highway Research Program (NCHRP) Synthesis 562,
Repair and Maintenance of
Post-Tensioned Concrete Bridges
, which is the subject of the Concrete Bridge Preservation article on page 38.
The Concrete Bridge Preservation article on page 38 summarizes the results of NCHRP Synthesis 562. As part of the study, state
departments of transportation were surveyed about the design, construction, maintenance, and repair of post-tensioned bridge
structures. This is a link to the 45 responses to the survey.
The Perspective article on page 63 describes an engineering firm’s approach to improving its quality assurance and quality
control processes, which included the decision to pursue ISO9001 quality management system certification. This is a
link to the abstract and description of the ISO 9001 standard.
In the State article on page 52, the innovative use of ultra-highperformance
concrete (UHPC) is mentioned. A recording of the July 30, 2021, webinar “Behavior and Strength of UHPC in
Shear,” produced by the Accelerated Bridge Construction Center at Florida International University, is available on this webpage.
The Concrete Bridge Technology article on page 42 discusses standardizing details for segmental concrete box-girder
bridges. This link provides access to American Segmental Bridge Institute webinars such as “Detailing Segmental
Concrete Box Girders for Constructability” and “Load Resistance Factor Rating of Concrete Segmental Bridges.”
This is a link to a Construction Updates webpage for the Tenth Avenue Bridge rehabilitation project in Minneapolis,
Minn., which is the subject of the Creative Concrete Construction article on page 46. Project update presentations
and videos are available in which the suspended platforms described in the article are visible.
The Perspective article on page 20 presents Washington State Department of Transportation’s policies and criteria for
repairing or replacing prestressed concrete girders damaged while in service. Other resources for the evaluation and
repair of damaged girders include “Guide to Recommended Practice for the Repair of Impact-Damaged Prestressed
Concrete Bridge Girders,” published as part of NCHRP Project 20-07. The guide is available for downloading via this link.
NCHRP Project 20-68D, the U.S. Domestic Scan program, is intended to facilitate innovation among transportation
agencies by face-to-face interaction. Domestic Scan 19-01 brought together representatives from 12 state agencies
to share lessons learned in bridge design, construction, and maintenance. This link accesses the Scan 19-01 report,
“Leading Practices for Detailing Bridge Ends and Approach Pavements to Limit Distress and Deterioration.”