Foundations

Designs on greatness

With the two caissons for the main towers successfully lowered into place on the seabed in May this year, the consortium responsible for designing and building what will be the world’s longest suspension bridge is now focussed on progressing the substructure and tower construction in the months ahead. Helena Russell reports

Construction of marine piles begins for Australian river crossing

The first concrete has been placed this week for the marine piles of the Grafton Bridge in New South Wales.

A need for speed

Thirty-eight huge footings for the New Champlain Bridge in Canada are being installed using a specially-built floating foundations installer

Footing construction on the new Champlain Bridge

Contract let for piles for 75 bridges

A contract has been awarded for the piling to support 75 bridges on the Woolgoolga to Ballina section of Pacific Highway upgrade in the Australian state of New South Wales.

Reunion Island offshore highway mega-barge under test

Construction of the offshore section of the 5.4km-long Nouvelle Route du Littoral has begun. 

Foundation construction begins for new Wear crossing

Study begins for new bridge over fast-flowing Papua New Guinea river

Pylon construction begins for Mersey Gateway

The first major concrete pour is under way for pylon construction at the Mersey Gateway project in north-west England.

Unusual conditions led to Leo Frigo Bridge deck displacement – final report

Investigations into the collapse of the I-43 Leo Frigo Memorial Bridge in Green Bay, Wisconsin, US have determined that highly unusual environmental conditions led to the severe corrosion of the steel piles in the foundation that supported Pier 22 and which caused the vertical displacement of the bridge deck.

SR520 pontoon construction enters final phase

The final pontoons manufactured in Tacoma for the new SR520 floating bridge are leaving their casting basin this week.

Marine work begins for Mersey Gateway

Construction of the Mersey Gateway Bridge in north-west England has entered a new phase with the arrival on site of three marine barges.

Corrosive conditions blamed for sag in Leo Frigo Bridge deck

Wisconsin Department of Transportation has published a draft report on the investigations and repairs following sudden sagging of the deck of the Leo Frigo Memorial Bridge.

Diameter drive

Three large bridges are being built as part of the final link on a major Russian highway. Richard Fish reports

Safety fears prompt closure of bridge over North Carolina lake

North Carolina Department of Transportation in the USA has closed a bridge over Lake Fisher for emergency repairs.

Competitive edge

Turkish treat

The new suspension bridge being built across Izmit Bay in Turkey is progressing rapidly, report Yasutsugu Yamasaki, Naoki Ikoma, Mitsuhiro Kudo, Ali Nebil Ozturk and Fatih Zeybek

Stablisation of sagging Leo Frigo Bridge begins

Construction has begun of two towers designed to stablise a sagging section of the Leo Frigo Bridge in the US state of Wisconsin.

Wisconsin bridge closed as 122m span sags

The Leo Frigo Bridge in the US state of Wisconsin remains closed to traffic after a sag developed in a 122m-long span.

Poor pile condition could force early replacement of Florida bridge

Engineers in Miami-Dade in the US state of Florida have found that the piles of the Bear Cut Bridge are in worse condition than expected.