bridges Archives - Infrastructure Digest

CHP car catches fire on Bay Bridge ramp, snarling traffic

Traffic on the eastbound Bay Bridge was snarled Monday evening after a California Highway Patrol vehicle caught fire on the eastbound off-ramp to Treasure Island, injuring the officer, officials said.

Why should you read this? I just like the headline. And, good pics. SF Gate, January 2015

NJ Transportation Chief: Route 3 Cracks Widened Over Months

In October, inspectors checking the bridge found two 3-inch cracks in its steal beams, WCBS 880’s Levon Putney reported.
“The tests this week found the cracks had grown to 6 3/4 inches and 4 1/8 inches,” Transportation Commissioner Jamie Fox said. “That is what scared us.”

Why should you read this? Expect to inspect. CBS, January 2015

Cincinnati bridge collapse: 1 dead, 1 hurt after Ohio bridge collapses

Hours after an Ohio interstate overpass undergoing demolition collapsed, killing one person and injuring another, commuter traffic was slow around the Cincinnati region early Tuesday, particularly on other main arteries into the city.

Why should you read this? Bridge week continues, with a sad warning story. AP, January 2015

The 10 Longest Arch Bridges in the World

Arch bridges are one of the oldest types of bridges. The oldest known bridge in the world known to still be in use is the Caravan Bridge, a stone arch bridge across the Meles River in Izmir, Turkey. It was built in 850 B.C.

Roman engineers built many arch bridges, quite a few of which are still standing. Probably the most famous is the Pont du Gard, an aqueduct bridge in southern France. Built in the first century A.D., it features three tiers of limestone arches and stands 48 meters high and 275 m long.

The Alcantara Bridge, a stone arch bridge built by the Romans in Spain in 106 A.D., has been repaired numerous times after suffering damage during various wars, but it is still serving pedestrians. It is 45 m high and 182 m long.

Why should you read this? It’s bridge Monday here at Infrastructure Digest! ENR, January 2015

Bay Bridge’s troubles: How a landmark became a debacle

Sometime in the next few weeks, the lead contractor for the Bay Bridge’s new eastern span will finally declare that the most complex public works project in California history is done — and state and local authorities will be solely responsible for a landmark beset by problems that trace back more than 16 years, to the day a handful of experts picked a design that bordered on the experimental.

Why should you read this? Fascinating, in a sick, train wreck kind of way. San Francisco Chronicle, January 2015

Gov. Chris Christie met with feds on Bridgegate

Federal investigators are probing why lanes leading to the George Washington Bridge were closed for several days, causing massive traffic jams.
Some of Christie’s aides and allies have been linked to the lane closures, which are alleged to have been arranged as part of an attempt at political retribution.

Why should you read this? To be honest, I’m just tickled that civil infrastructure is getting a political scandal all its own… Politico, January 2015

BRIDGE RESCUE: S.C. acts on deficient bridge issue

“With any legislative program there are always some politics involved, and one of the things I tried to do is set up the packages starting in the northwest part of the state and I let packages going all the way down the coast,” Floyd, bridge maintenance engineer for SCDOT, told Roads & Bridges. “Now I am starting packages let in January in the upper part of the state and then I will work my way down again—that way everybody has something going on at the same time.

“Nobody can say, ‘Why are you working on the upper state and not the lower state.’”

Why should you read this? Interesting, proactive approach to an unglamorous issue. Roads & Bridges, November 2014

Sicily bridge collapses 10 days after opening

“A multi-million pound viaduct has collapsed in Sicily less than two weeks after it opened – provoking a political outcry.
The Scorciavacche viaduct is near Mezzojuso, 25 miles from Palermo on a stretch of highway that runs between the island capital and Agrigento.
It has buckled dramatically in the past few days. The construction company responsible for the project, Anas, said the collapse was due to “subsidence”.”

Why should you read this? Well, it’s the biggest infrastructure news of the day… The Telegraph, January 2015

Report: $120 billion needed annually to repair roads, bridges

“The report found about 64,000 structurally deficient bridges are still operating across the country. That is after that category shrank by 43% from 1994 to 2013 following a major federal infrastructure spending package and state efforts to target older bridge structures.
Highway and bridge estimates in the report are based on a rate of travel growth of 1% per year in vehicle miles of travel. In 2014, America was returning, for the first time since the recession began in 2008, to the level of 3 trillion miles of travel. That rebound in travel miles has been spurred in part by falling gasoline prices and increased employment.”

Why should you read this? Not exactly news, but it’s nice to have the latest proof that we work in a recession-proof industry. Roads & Bridges, December 2014

BRIDGE RESCUE: Wetting the decks for inspection

“Dr. Brian Mazzeo, professor of electrical and computer engineering at BYU, to whom Guthrie reached out in order to solve an issue with electrical impedance measurements in concrete, found himself in the midst of a surprising problem.

“I was astounded that [inspectors] were dragging chains and tapping with hammers to find delaminations,” Mazzeo told Roads & Bridges. “Because of my background in electrical engineering, this area of testing seemed ripe for new methodologies and algorithms that could be deployed quickly and efficiently to scan large areas and create defect maps.””

Why should you read this? Asset maintenance will only grow in importance in coming years, and the movement of high tech solutions from other fields into infrastructure is always fascinating. Roads & BridgesNovember 2014

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