NewsDecember 15, 2001

Photos provided by Fitz O'Donnell of Traylor Brothers Inc.
Top view of Pier 3 caisson in progress including reinforcing steel and dredge wells
Top view of Pier 3 caisson in progress including reinforcing steel and dredge wells
Pouring concrete for Pier 3 caisson
Pouring concrete for Pier 3 caisson
Fully completed follower cofferdam at pier 3
Fully completed follower cofferdam at pier 3
High pressure pumps remove sand from beneath the caisson and deposit it into the river
High pressure pumps remove sand from beneath the caisson and deposit it into the river
Inside the follower cofferdam prior to dredging
Inside the follower cofferdam prior to dredging
A pre-assembled reinforcing steel "cage" is hoisted to the north tower leg of pier 2
A pre-assembled reinforcing steel "cage" is hoisted to the north tower leg of pier 2
Ironworkers finish installing reinforcing steel, or rebar, once the cage is in place
Ironworkers finish installing reinforcing steel, or rebar, once the cage is in place
Illinois access road being built up due to flooding
Illinois access road being built up due to flooding
These are pipes which protect the main cables that support the roadway
These are pipes which protect the main cables that support the roadway
Erecting falsework for the "bowtie" between the tower legs
Erecting falsework for the "bowtie" between the tower legs
Very high flood waters prevent construction from taking place
Very high flood waters prevent construction from taking place
Steel forms used support concrete as it is being poured
Steel forms used support concrete as it is being poured
Loading concrete from trucks onto the water
Loading concrete from trucks onto the water
Inside the cofferdam before the caisson is built
Inside the cofferdam before the caisson is built
A view of piers 2 and 3 as they have sat for the last few years
A view of piers 2 and 3 as they have sat for the last few years
Illinois view of flood conditions easily covering the access road
Illinois view of flood conditions easily covering the access road
Leveling out sand before caisson construction begins
Leveling out sand before caisson construction begins
Pier 3 "Cutting edge" made of steel plates and beam which form the bottom of the caisson
Pier 3 "Cutting edge" made of steel plates and beam which form the bottom of the caisson
Inside the "bowtie" at pier 2
Inside the "bowtie" at pier 2
Pier 3 follower cofferdam as it is being dewatered
Pier 3 follower cofferdam as it is being dewatered
Ice and snow slow progress, but they do not stop it
Ice and snow slow progress, but they do not stop it
"Dredging" pier 3 using a clam bucket suspended from a crane
"Dredging" pier 3 using a clam bucket suspended from a crane
High pressure pumps remove sand and debris from beneath the caisson
High pressure pumps remove sand and debris from beneath the caisson
Side view of pier 3 caisson
Side view of pier 3 caisson
Erected steel "follower":  this supports the walls of the cofferdam once it has been dewatered
Erected steel "follower": this supports the walls of the cofferdam once it has been dewatered
Sheet piles being installed around the follower:  they form the wall of the cofferdam
Sheet piles being installed around the follower: they form the wall of the cofferdam
A vibratory hammer is used to drive sheet piles all the way down to bedrock
A vibratory hammer is used to drive sheet piles all the way down to bedrock
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