$100m corrosion & cathodic protection project for Sydney’s tallest office building

WHEN it was finished in 1978, the 67-storey MLC Centre in Martin Place was not only Australia’s tallest office building, but also the biggest reinforced concrete structure in the world. Thirty-three years later, the Harry Seidler-designed structure is showing its age. Its concrete facade is breaking up and the owners have agreed to spend $100 [...]

Corrosion – Fatal Impact on Concrete Wall Flaw

A deficiency in the concrete wall construction of the basin at the Gatlinburg Wastewater Treatment Plant led to the basin wall collapsing, killing two employees in April, a report from the state issued Thursday says. “Walls were cast in a manner that produced a cold joint between the cast wall which fell” and three interior [...]

Corrosion problems identified in Melbourne’s City Loop

Serious structural problems in Melbourne’s City Loop – including cracking tunnel walls, concrete corrosion  - have been ignored by successive state governments and train operators despite repeated warnings. A 2001 report, also obtained by The Age, revealed the loop was suffering from long-term structural corrosion caused by possible contamination of the original concrete mix. Damage to [...]

12 Montreal structures considered critical due to corrosion

Montreal Mayor Gerald Tremblay said on Wednesday that 12 bridges, tunnels and overpasses in the city identified by engineers as being in critical condition. “We have the reports from our engineers that these structures are safe,” Tremblay told reporters at city hall, where technical details on 35 structures were made public. “From the moment one [...]

Florida’s St. Augustine Beach Pier Corroding

According to St. Johns County officials, the stretch of coastline from south Georgia to Fort Lauderdale is the most corrosive in the nation. Evidence of the corrosion can be seen on the St. Augustine Beach pier, one that’s 25 years old and nearing the end of its lifespan. Janice Vose, who spent her time under [...]

Plymouth Avenue bridge closed until next year

There’s good news and bad news for traffic users of the Plymouth Avenue Bridge. The good news is that city officials appear to have found the money needed to repair the bridge. The bad news is that it will probably be a year or more before the bridge is open to motor vehicle traffic. Minneapolis [...]

Iowa bridges third-worst in the nation

At first glance, the two-lane bridge over Wapsinonoc Creek seems up-to-date. But a closer inspection reveals rusted bolts, graffiti, and crooked beams. More than 4,000 cars travel across it each day, and it has not been renovated since 1956. The bridge, located in Muscatine County, is one of 5,000 bridges in Iowa classified as structurally [...]

Spring River bridge to be replaced due to corrosion

If the deck on the Missouri Highway 96 bridge over the Spring River near Kellogg Lake Park were rated any worse, the bridge would have to be closed. According to Jerry Davis, a transportation project manager for the Missouri Department of Transportation, the deck of the Highway 96 bridge that crosses Spring River received a [...]

Aging U.S. 2 trestle gets needed corrosion repairs

With thousands of vehicle trips daily, U.S. 2 gets needed repairs EVERETT (WA) — Concrete is falling off in chunks, rebar is rusting and thousands of people drive over the westbound U.S. 2 trestle every day. While the girders on the trestle’s underbelly have been slowly deteriorating for more than 20 years, state transportation officials [...]

Gardiner structurally sound, experts say, after chunk smashes onto road

TORONTO: City crews will be examining sections of the Gardiner Expressway after a 4.5-kilogram chunk of concrete fell onto Lake Shore Blvd. W. earlier this week, hitting a guardrail and ricocheting into the road. The slab, about four centimetres thick and over a meter long, was sloughed off the bottom of the elevated section, its [...]