“Best of IBC” Webinar Series

The Best of IBC Webinar Series is a great way to preview the high quality technical content presented at the International Bridge Conference®.

Attendees can earn 1 pdh credit!

Virtual webinars are FREE to attend, but registration is below and is required for pdh certification.

Upcoming Webinars

Topic: Accelerated Bridge Construction

Date/Time: Wednesday, March 2, 2022; 12:00 PM

IBC 21-21: Design and Construction of Prefabricated Bridge Elements for the Replacement of Bridges 1-676 and 1-677
Nicholas Dean, P.E., M.C.E., Delaware DOT, Dover, DE ; Scott Walls, P.E., M.C.E., Delaware DOT, Dover, DE

This paper presents the design and implementation of the various prefabricated bridge elements utilized for the replacement of Bridges 1-676 and 1-677 on SR 141. The proposed replacement for each of these bridges consists of three spans of a little over 80’-0” that carry SR 141 over I-95 and I-295. In order to minimize bridge construction time, prefabricated superstructure modules and precast pier columns and pier caps were used. UHPC was used to transversely connect the superstructure units. This project demonstrates Delaware’s first application of prefabricated superstructure modules and precast pier columns and pier caps. This paper illustrates the pros, cons and lessons learned from using ABC techniques for the replacement of Bridges 1-676 and 1-677. It will also discuss the collaborative efforts between the design staff, the construction engineers, and the contractor to overcome obstacles and deliver a quality product within the project schedule. The first phase of construction for Bridges 1-676 and 1-677 was completed in October 2020. The second phase of construction is now underway and is expected to be complete November 2021.

IBC 21-24: Longfellow Bridge Rapid Construction
William Goulet, S.E., STV Incorporated, Boston, MA

The Longfellow Bridge spans the Charles River and carries Route 3 and the MBTA Red Line. The rehabilitation of 11 arch spans included replacing the deck and all steel framing except the arch ribs. The Charles/MGH Station prevented access to two spans during normal construction. The rapid construction concept allowed for the replacement of 100 feet of structure during each weekend by utilizing precast bridge units and temporary shoring for construction of the final structure.