March 24, 2015
The Concrete Buster 6600 robot from NLB removes bad concrete quickly without damaging rebar, so bridge deck, parking deck and other projects are finished faster. Its rotating water jets (20,000 psi, convertible to 40,000 psi) work more consistently than oscillating jets or mechanical methods and...
March 23, 2015
Jasper, Ind., Street Commissioner and IACT 2014 Ivan H. Brinegar Municipal Management Award winner Raymie Eckerle discusses the performance of SealMaster’s Liquid Road in the city’s pavement preservation program.
March 12, 2015
The S.R. 951/ U.S. 41 Road-Widening Project in Naples, Fla. is expanding from two lanes to six lanes. The project is expected to be completed in 2016.
March 02, 2015
The new “Twins” offer three 12-ft driving lanes, a 4-ft inside shoulder and a 10-ft outside shoulder, as well as portal extensions beyond the rock face.
Colorado. Hearing the name of this great state brings to mind images of snow-capped peaks, clear mountain water used to brew Coors beer and the soft melody of John Denver’s timeless song, “Rocky Mountain High.”
One of the primary benefits of living in Colorado is the availability of so many...
March 02, 2015
I-90 is the main east-west transportation corridor in the state of Washington, connecting the large population and business centers of the western half of the state with the agricultural industries and recreational areas that comprise the eastern portion.
The uninterrupted movement of people,...
February 24, 2015
The Crafco TechCrete is designed to treat distresses in Portland cement concrete pavement (PCCP), including cracking, joint deficiencies, surface defects and miscellaneous distresses in PCCP. TechCrete is a hot-applied, gray-colored, flexible mastic sealant made of polymer-modified synthetic resin...
February 19, 2015
This image shows the placement of TechCrete into a cavity that has been sawed and blown clean with compressed air.
The Utah Department of Transportation (UDOT) is always on the lookout for durable solutions for pavement preservation. Degradation caused by natural forces, traffic and other means is a continual challenge for keepers of the infrastructure—they need to treat defects such as surface spalling, panel...
January 05, 2015
In north Louisiana, not far from the Arkansas state line, the Louisiana Department of Transportation and Development (DOTD) has been undertaking a megaproject with the intent of tying together a wide array of communities via the I-49 North Corridor. And now it looks as though the home stretch is...
January 05, 2015
Once a tree-eating monster is caught up in all of it’s glory, the best results are going to be produced when there is a place mat involved.
When the Army Corps of Engineers first scoured the proposed wetland-sensitive footprint of the Carolina Bays Parkway project in South Carolina, the primary...
January 05, 2015
How do you deliver 78,298 cu yd of ready mix concrete, 270,000 cu yd of paving concrete, move 1.2 million cu yd of dirt, rehabilitate 30,000 linear ft of sewer line, recycle 700,000 sq yd of concrete pavement, place 850,000 tons of aggregate base and 85,000 linear ft of concrete barrier wall all in...
January 05, 2015
Same as any metropolis, New Orleans has a good many functioning industries, but tourism is arguably the most crucial. The pull of the French Quarter’s historic cache and socially embraced infamy entwines with the business importance of the riverside Convention Center and the Superdome’s dual...
December 24, 2014
Precast slabs arrive ready for installation and use.
When’s the last time you saw a pothole, or, worse, hit one with your car? Chances are it hasn’t been long. Pavements around North America are showing alarming rates of deterioration at the same time traffic is at an all-time high.
For years, Georgia DOT (GDOT) has researched and implemented...
December 17, 2014
On Dec. 10, Roads & Bridges reported on a halt in the operations to excavate a tunnel down to the boring machine known colloquially as “Bertha,” in order to perform repairs that would allow the machine to once more begin tunneling for the S.R. 99 project.
State engineers had voiced concerns...
December 05, 2014
Deck removal totalled more than 22,000 linear ft of cut reinforced concrete.
PANAMAX-sized ships are one of the ways goods from across the world are transported to consumers in the U.S. It is very important these container ships arrive safely into our ports. Unfortunately, the Bayonne Bridge roadway in Staten Island, N.Y. was not high enough to allow these massive ships to...
November 17, 2014
There is much to be said for savoring a delayed reaction in the great state of Ohio now that the Ohio Turnpike Commission can finally declare success on its decades-old project to widen a significant portion of the 241-mile toll road.
Originally conceived in April 1995 as a $460 million endeavor...
November 10, 2014
Seattle Tunnel Partners, with whom the Washington State Department of Transportation contracted for the $3.1 billion Alaskan Way Viaduct Replacement project, were allowed to resume work recently after a state-mandated delay of nearly two weeks following the discovery of shell material in the earth...
October 17, 2014
Accelerated construction from 17 to 13 days was achieved by the contractor’s hour-by-hour construction plan and 24-hour work schedule.
The Rte. 6 Bridge Deck Replacement Project Team took a hard look at a range of traffic-mitigation scenarios from full closure to a one-lane road with alternating traffic. After assessing cost of delay up to $80,000 per day, an addition of up to 60 minutes of travel time and potential for 3- to 4-...
September 09, 2014
The NGCS consists of diamond grooving a surface using 3.2-mm-wide longitudinal grooves saw-cut to a depth of 3-5 mm at 12.5- to 16-mm centers.
Australia’s Roads and Maritime Services (RMS) recently constructed several test sections utilizing diamond saw-cut textures on their concrete pavement as part of a continued effort to minimize tire-pavement road noise. The completed research has resulted in the development of a low-noise-diamond-...
August 08, 2014
Decades of heavy use have taken a toll on I-5 north of Seattle. The concrete is cracked, chipped and bumpy in many places. Now a new highway preservation project will address some of the worst areas between Northgate and Shoreline.
On Monday, Aug. 11, contractor crews from Granite Construction Co...