From the August 2000 issue of The Beacon -- The Bill Emerson
Memorial Bridge has completed another major milestone on its way to
spanning the Mississippi River at Cape Girardeau--the jet-grouting
process is complete.
Jet-grouting was used to strengthen fissures in the bedrock at the Pier 3 site.
The crevices in the bedrock were filled with cement grout through a process similar
to that of visiting your local dentist.
Borings were made to a determined depth and a jet-grouting tool was inserted.
The tool used high-pressure water and air to flush silt and other weak deposits
from the surrounding area and simultaneously fill those spaces with a cement
mix.
The process took about a year and a half to complete. Jet grouting was necessary
for the bridge to meet the seismic requirements for Southeast Missouri.
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