December 15, 2001

Bill Emerson Bridge Construction

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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