A Jane Addams Memorial Tollway/Interstate 90 contractor capped the 2014 season with the first phase of prestressed concrete erection for the $95 million Fox River Bridge expansion--24 bulb tee girders, 90-in.
bulb tees to Kraemer's lifting-hardware specs and with up to 50 0.
The new Fox River Bridge is emerging as a showcase of new versus old prestressed concrete engineering, where modern bulb tees more than 7 feet deep and nearly 170 feet long succeed vintage I girders of half the depth and length, and enable a reduction of piers from 14 to seven.
In December 2011 and July 2012 cover stories, we tracked precast/pre-stressed producers' impressive strides in the super girder class, typically bulb tee bridge members in the 150-foot-plus range.
In separate articles (Concrete Tech, pages 20-22; Knife River NW, cover story, pages 27-B1), we see how each tackled jobs, one emergency, one planned, involving long bulb tee girders to replace spans carried by obsolete steel through-truss members.
The bridge girders are the Oregon Department of Transportation Bulb Tee 90-in.
Concrete Tech fabricated the beams in a recently completed enclosure built especially for a new generation of super long girders engineered to efficient WSDOT bulb tee profiles.
has led the precast/prestressed industry's standardization of bulb tee bridge girders in the 150- to 200-ft.
30 bridge at the Burnt River and Union Pacific Rail Road (UPRR) line in eastern Oregon was accompanied by precast-friendly factors: a remote location in a market served by three Precast/Prestressed Concrete Institute-certified plants; department of transportation keen on the economy and engineering efficacy of prestressed bulb tee girders in the 150-foot-plus class; and, Federal Highway Administration funding mechanism compelling a state's inaugural precast deck panel project.
30 Union Pacific rail line and Burnt River crossing and eliminate the need for a replacement pier: long-span bulb tee prestressed girders bearing on an abutment supported by precast mechanically stabilized earth panels.
The Elm Mott and Victoria plants are workhorses for TX beams, succeeding bulb tees
, and U girders, most common in Houston and Harris County.
for an Illinois crossing: the Des Prairies River Valley Bridge along the Interstate 355 Veterans Memorial Tollway.