A convoy of special center dumping dirt haulers brings in material to
build the north embankment. |
The Rogers Lane bridge south embankment required blasting to prepare the
abutment foundation. This is the array of bore holes, ready for explosives.
Photo by Paul Mobus |
After the blast |
The north abutment takes shape. |
and the south abutment |
Lots of rebar in the abutments |
These steel columns are the forms into which
concrete is poured to make the support columns for the bridge. They are
guyed to large concrete blocks made for the purpose and sitting on top of
the ground. |
Guy anchor blocks. These can be transported
and set on the ground wherever guy wires need to be anchored. |
This is one of the rebar cages that goes into the
columns. |
A finished column. |
The north abutment and column supports are ready. |
This is the south abutment showing support positions
for the beams. The beams require freedom to move with loads and thermal
expansion. These supports are called pot bearings. |
This is one of the pot bearings. Specifically it's
referred to as a guided pot bearing. It allows some limited rotational
freedom and permits the beam to expand and contract. AMSCOT
Bearings Con-Slide
Pot Bearings |
A pot bearing up close. Notice the polished surface
on the underside of the top bearing plate. |
Looking north across the 64 bypass, the Rogers Lane
columns are capped forming bents and all is ready for the steel beams. |
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At the end of the day park your small equipment out
of harms way. Fifty feet up ought to do it! |
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The beams are laid starting from the north abutment.
They are resting on pot bearings on top of the bent. |
This part of the bridge spans the Norfolk Southern
track. |
The bridge to nowhere. |
This is the end of South Rogers Lane looking
north. A few hundred yards through the woods is the other end of Rogers
Lane. Some day they will connect. |
Rogers Lane over the 64 Bypass over Crabtree Creek. |
From the north end of the Rogers Lane bridge. |
The north bent - about 50 feet up. |
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The north abutment, beams and bracing - you can seen
the pot bearings supporting the beams. |
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