I-95 Collapse: What it Means and Why Road Repairs Take So Long
The news on June 11, 2023,
created dismay in the hearts of tens of thousands of truckers, especially those
based in the northeast. The announcement that a tanker had crashed and exploded
was tragic for the loss of the driver’s life. It also left the prospect that
the vital artery would be shut down for perhaps months.
The Tragic Accident
Every trucker who has traveled
on I-95 is aware that it extends all the way from Maine to southern Florida. It
is one of the most heavily used commercial corridors in the nation, and it is a
primary route through Philadelphia. It was in that city where the accident
occurred. From early reports, it appears the driver of a tanker carrying close
to 8,500 gallons of fuel lost control in a turn. He appeared to be making a
left-hand turn from the northbound lane and overturned, igniting a huge fire
under the roadway.
Initial examination of the
damage caused by the intense and extended heat from the ensuing fire caused the
northbound lane to collapse. It also weakened the southbound lanes badly enough
to make them unusable. The first estimates coming from engineers examining the
damage were not encouraging, forecasting a timeframe of months to repair the
damage and allow the vital artery to again be available for use.
However, as recently as Sunday
the 18th an announcement by Governor Josh Shapiro indicated the road
may start carrying traffic as soon as two weeks
from this past weekend. As explained at a press conference, an innovative
technique using more than 2,000 tons of glass nuggets will be used to fill in
the collapsed section to allow temporary passage. The foamed glass aggregate
will serve as backfill to deliver a level surface. Then, construction will
commence immediately to build a second replacement bridge for a detour. That
will allow engineers and workers to clear out the damaged section and replace
the exit ramp.
Everyone from the President to
a wide range of politicians and industry experts have weighed in on the
importance of this project, many echoing the statement, “There’s no more
important project in the country…”
A livestream has been
established as thousands of viewers are watching around the clock as workers
tackle the massive project.
In the meantime, a united
effort with local, state, and federal officials has produced and published a
series of detours and alternate routes for interim use by commercial vehicles.
The Challenges of Road
Construction
The news of the near-miraculous
repair schedule takes many professional drivers by surprise. They are used to
seeing some road projects take years. The idea of such a rapid solution has
them asking, why not always do this?
Of course, repairing an
existing roadway is a vastly different
project than building out a new highway or reconstructing an
existing one. There are three major hurdles that most road projects face. These
include:
- Permitting, funding, and pre-work requirements. In
today’s world of regulations and environmental concerns, any project can
take years prior to the first shovel of dirt being moved. Likewise,
providing a safe environment for drivers and the workers often requires
tradeoffs on when lanes are open and what work is being done.
- The physical side of getting a roadway completed is,
of course, far more complex than simply laying some concrete. Engineers
speak of road construction in terms of the lane preparation and them
building the “cross-section.” Depending on the soil and the terrain, the
need for achieving a level roadway can require extensive earthwork. This
can involve both cutting areas above the road and filling below.
- Only when the earthwork is done properly can the
process of “laying the road” begin. This requires multiple steps of laying
aggregate, rebar, and only then the actual concrete that will be the
surface.
All these steps add to time and
costs, with a “simple” two-lane costing as much as $3 million a mile, and as
much as four times or more than that number in some urban areas for multi-lane
projects.
No one has yet projected the
total costs and time to completely repair the damage from this accident, but it
will not be cheap nor fast.
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