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Project Overview:
The four main sections of this $23.5 million job include the
South 85/ North 87 connector separation, North 85/North 87 connector
over crossing modification, Southbound Route 87 connector and
Guadalupe River bridge widening.
This project, located in Northern California near San Jose,
is the completion of an interchange built 12 years ago. Flyover
ramps will connect southbound Route 85 to northbound Route
87 and southbound Route 87 to northbound Route 85. The new
flyovers will connect to two structures that were partially
built during the original construction and will help to remove
freeway traffic from local streets.
"One challenge is to keep freeway and light rail traffic
flowing through the project, under and around the construction,"
says project manager Walt Quincy. "Work over or immediately
adjacent to the traffic is performed behind protective barriers
or done at night during lane closures." Substantial penalties
could be incurred if the closures exceed their allowed time
periods.
The project is approximately half completed, and is progressing
ahead of schedule with falsework erection finished at the
end of October. The estimated date of completion is May, 2003.
85/87 Project Photos:
Winter
2002/2003
Summer
2002
What's New?
February/March 2003
All major concrete placement is complete, and falsework removal
will begin on the last bridge.
The entire project will be complete by May.
December 2002
The last two deck pours will be completed in late January
Falsework stripping is almost complete
November 2002
Concreting of main flyover completed, followed by falsework
stripping
October 2002
Last of the falsework erected
Bridge superstructure construction is in high gear and falsework
removal will begin shortly
On schedule for early completion
September 2002
Deck pour on Highway 85
Poured third section of stems on 85 to 87 connector
August 2002
The first third of flyover 1 is constructed with the second
third approximately half completed and the last third just starting
Flyover 2 has its columns built, and the last abutment is
under construction. Falsework for the superstructure is starting
Bridge 1 widening just finishing
Bridge 2 falsework for the superstructure is erected
Project Features:
A connector separation involving 523-meter, three-framed,
prestressed concrete box girder bridge, including a total
of 6,068 meters of piling and 6,545 cubic meters of concrete
An over-crossing modification with a 12.5-meter, reinforced
concrete bridge with 201 meters of piling, and 328 cubic meters
of concrete. This is a 1.83-meter-thick slab bridge to an
existing bridge
A southbound route 87 connector with a 477-meter prestressed
concrete box-girder bridge of two frames with a total of 2,862
meters of piling, and 3,708 cubic meters of concrete
A bridge widening using a 129-meter concrete box girder bridge
with a total of 1,484 meters of piling, and 1,265 cubic meters
of concrete
The project will use 16,000 tons of asphalt concrete, 15,000
cubic meters of excavation and 92,000 cubic meters of embankment
Project Related Links:
Santa Clara Valley Transportation Authority
http://www.vta.org/highways/rte8587.htm
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