Joseph Merth P.E. Washington State Department of Transportation Phone: (360) 705-7166 Email: merthjo@wsdot.wa.gov
Description
To reduce construction time and minimize traffic disruption, the Washington State Department of Transportation chose precast stay-in-place deck panels in the design of this two-span, 325-foot replacement bridge over I-5 in Tacoma. The new post-tensioned box girder bridge uses precast tub girder segments. With no need to construct and remove conventional deck forms, lane closures on I-5 were greatly reduced. Leveling screws were used to adjust camber on the 3-1/2-inch-thick precast pretensioned panels, and all 766 panels were placed within a week of limited nighttime I-5 lane closures.
Photo
Prefabricated Elements
Decks
Other Keywords
Precast stay-in-place deck panels; precast post-tensioned tub girders,full-depth deck panels
Advantages
Minimized traffic disruption by reducing construction time.
