Accelerated Construction

FIU bridge cracking
News August 10, 2018
Cracks that appeared in the Florida International University (FIU) bridge days before it collapsed were far more extensive than previously disclosed, according to new photographs included in a preliminary report released this week by the National Transportation Safety Board (NTSB).   The photos...
WV Turnpike ABC
Case Studies July 12, 2018
The West Virginia Turnpike, an 88-mile four-lane toll road including stretches of I-77 and I-64, is a winding and elevated highway through mountainous terrain. There are 116 bridges on the Turnpike, and prior to 2016, the average bridge age was 32 years old. In 2016, the Turnpike commenced a...
FIU pedestrian bridge collapse investigation
News May 25, 2018
The National Transportation Safety Board released a preliminary report on the agency's ongoing investigation of the pedestrian bridge collapse that took place at Florida International Univerisity (FIU) on March 15 in the city of Sweetwater.   According to the report, the 174-ft-long bridge fell...
FIU bridge
News May 14, 2018
The Miami Herald has reportedly obtained documents from Florida International University (FIU) through a public records request that indicate cracks were observed in the newly installed campus pedestrian bridge two weeks before its deadly collapse.   Photographs and an internal email that had...
ABC bridge earthquake testing
News May 08, 2018
Combined accelerated bridge construction methods were determined to be safe and ready for real-world application following tests using massive shake tables at the University of Nevada, Reno’s world-renowned Earthquake Engineering Laboratory.   The tests in April subjected a 70-ton, two-span, 70-ft-...
U.S. Rte. 30 bridge over Bessemer Avenue replacement project

The U.S. Rte. 30 bridge over Bessemer Avenue replacement project in East Pittsburgh earned the Best ABC Project Award in the PBES category during the National ABC Conference. Photo courtesy of Tri-State Design & Development.

Article May 01, 2018
The reinforced concrete T-beam bridge on U.S. Rte. 30 over Bessemer Avenue in East Pittsburgh, Pa., had served the area well since 1937.   But more than 80 years of traffic and weather had taken its toll. The bridge was structurally deficient to the point that workers had to install temporary...
Laurel Street OC pilot project in Vallejo, Calif.

Crews swing bent cap in place on Laurel Street OC pilot project in Vallejo, Calif. Photos courtesy of Caltrans.

Article May 01, 2018
The Laurel Street Overcrossing (OC) is the first in a series of multi-span accelerated bridge construction (ABC) pilot projects that the California Department of Transportation (Caltrans) is building to assist in the mainstreaming of ABC into its project delivery system.   Due to the demands that...
FIU bridge collapse
Article April 03, 2018
What was left of the north section just laid there being poked and prodded.   Ten days removed from glory, five from tragedy, the accused segment of the pedestrian bridge at Florida International University (FIU) in the city of Sweetwater laid lifeless on Southwest 8th Street on March 20. A mini-...
ABC bridge Pennsylvania
Article April 03, 2018
Bridge collapses are thankfully rare.   Yet in the face of tragedy, it is a trait perhaps natively human to seek restitution in advance of gathering all facts, to point fingers, and, oftentimes, to shout righteously into the wind. The reader is directed to any comment string or talkback on the web...
Sam White Bridge MBI move

Night work on Michael Baker International’s Sam White Bridge move in 2011 using SPMTs.

Article April 03, 2018
The whole point is about safety. At least, that is one of many benefits of accelerated bridge construction (ABC) as explained by those who have been heavily involved in the process for dozens of ABC projects over the last decade.   According to the Federal Highway Administration’s (FHWA) final...
Northeast Extension bridge

Image source: Pennsylvania Turnpike Commission via The Morning Call

News September 11, 2017
Under the direction of the Pennsylvania Turnpike Commission, a Northeast Extension bridge in Lehigh County, Pa., will be demolished and replaced at the end of the month in a matter of days—the quick turnaround, however, will create a detour more than an hour long and push more traffic onto already...
 I-24 bridges in downtown Nashville

Image source: Equipment World's Better Roads

News June 23, 2017
The Tennessee Department of Transportation (TDOT) plans to use accelerated bridge construction (ABC) techniques for replacing I-24 bridges in downtown Nashville.   More than 148,000 vehicles travel on this section of I-24 daily. The $28.5 million project will include replacement of the bridges over...
twin three-span bridges carrying eastbound and westbound I-70 traffic over S.R. 121 / New Paris Pike in Wayne County, Ind
News March 14, 2017
Slide-in construction has been announced as the accelerated bridge construction (ABC) method contractors plan to use to replace the twin three-span bridges carrying eastbound and westbound I-70 traffic over S.R. 121 / New Paris Pike in Wayne County, Ind.   Construction will require recurring...
Seismic evaluation of grouted splice sleeve connections for ABC bridge pier repair
Article November 04, 2016
In recent years, accelerated bridge construction (ABC) has gained attention within regions of high seismicity.   Prefabrication of bridge structural components is an effective ABC method under the category of prefabricated bridge elements and systems (PBES) promoted by the Federal Highway...
Approach slab for bridge
Article November 04, 2016
Vermont’s narrow scenic roadways and challenging landscapes make innovative bridge construction essential.   A recent project in Hartford involved two complete bridge replacements (bridges 43N and 43S) on I-91. These two bridges carry significant traffic over U.S. Rte. 5, which also is a high-...
Two months ago, a massive storm caused washed outs; now it is ready to open again
News October 12, 2016
A pair of stream crossings on SH 13  in Wisconsin between Ashland and Mellen are finally nearing completion after a 1,000-year storm caused massive washouts two months ago.   Torrential rains washed out culverts at both crossings, as well as hundreds of cubic yards of fill material from the Trout...
News September 26, 2016
For the second time this month, the Rhode Island Department of Transportation (RIDOT) is replacing a bridge in East Providence within 80 hours. The agency began the replacement of the McCormick Quarry Bridge starting on Friday, Sept. 23 at 9 p.m.   RIDOT says the bridge, built in 1959, has been...
Pennsylvania bridges
News June 28, 2016
Fourteen bridges in Beaver County, Pa., are to be replaced by the end of 2017, with three of those projects to commence in July.   The three bridges have been in use for a combined 240 years, which underscores the need for immediate repairs and upgrades to those structures.   The projects are a...
A Michigan bridge that went from four months to just four days in construction time.

A Michigan bridge that went from four months to just four days in construction time.

Case Studies May 06, 2016
In 2013, the American Society of Civil Engineers conducted its latest comprehensive assessment of U.S. infrastructure systems. The results painted a grim picture, with the country earning a D+ grade. Along with the unsatisfactory score, the American Road & Transportation Builders Association...
RIDOT employing accelerated bridge construction techniques for rapid replacement of key East Bay bridges
News April 26, 2016
The Rhode Island Department of Transportation (RIDOT) is reconstructing a few state bridges by using precast foundation elements and by constructing the new bridge decks on large supports adjacent to the current bridges. When the new bridge decks are finished this fall,  the first structure (East...
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