AZDOT - Wed November 04, 2020
Crews Make Headway on Houghton Road Replacement Project
An entirely new kind of traffic interchange for southern Arizona will start to take shape. Local construction crews, along with the Arizona Department of Transportation, have been working on a project to improve access to Interstate 10 at Houghton Road....
Irwin Rapoport – CEG Correspondent - Thu October 15, 2020
CMES Inc. Constructs Diamond Urban Interchange in Bethlehem
CMES Inc. crews are scheduled to complete the Georgia Department of Transportation's (GDOT) $26.4 million project in Bethlehem to construct a full diamond urban interchange providing access to and from SR 316 to the crossroad SR 81, on Oct....
MovingHenryForward.org - Mon August 03, 2020
GDOT Awards Contract for Diverging Diamond Interchange in McDonough
A project first proposed in 2015 is going to construction after the Georgia Department of Transportation (GDOT) awarded a contract July 31 for the installation of a diverging diamond interchange (DDI) at I-75 and State Route 20 in the Henry County town of McDonough....
Mark Thomas Construction - Mon July 27, 2020
First Ever Diverging Diamond Interchange in California
Construction of the SR 120/Union Road Interchange takes place in the city of Manteca, which is is the first ever Diverging Diamond Interchange (DDI) in California. ...
Irwin Rapoport – CEG Correspondent - Tue April 07, 2020
Port of Entry Project Will Be 'Clean, Green and Smart'
As part of the California Department of Transportation (Caltrans) and San Diego Association of Governments (SANDAG) state Route 11 (SR-11)/Otay Mesa East Port of Entry project, crews from Skanska US Civil are constructing the final segment of the future toll road SR-11 and the southbound connector ramps, linking southbound State Route 125 (SR-125) to eastbound SR-11 and eastbound state Route 905 (SR-905)....
Giles Lambertson – CEG Correspondent - Tue January 28, 2020
DDI Will Be Erected on Interstate 35
Officials ceremonially shoveled dirt in Austin last July to launch the latest rendition of an interchange design called a "diverging diamond interchange." Commonly referred to as a DDI, the design is a relatively new wrinkle in highway architecture....
Mary Yamin-Garone & Irwin Rapoport – CEG Correspondents - Thu January 23, 2020
Alabama's First Diverging Diamond Interchange Nearing Completion
DDIs are particularly effective at locations, like the one in Alabama, that have:High volumes of left-turn traffic on and off of freeway rampsLeft-turn related safety challenges Moderate and unbalanced crossroad traffic through the interchangeA need for additional capacity, without widening According to the Alabama Department of Transportation (ALDOT), "DDIs improve safety by reducing vehicle-to-vehicle conflict points from 26 — as in a conventional diamond interchange — to 14 points....
Irwin Rapoport – CEG Correspondent - Mon October 07, 2019
Sacyr Construction USA Continues Work on Fla.'s First Coast Expressway
Phase 2 of the Florida Department of Transportation's (FDOT) First Coast Expressway project (FCE) is underway and expected to be delivered in mid-2025. Back in March, crews from Sacyr Construction USA LLC first began working on the north segment of the job, a $229 million contract that is being funded by the Florida Turnpike Enterprise....
TxDOT - Tue August 13, 2019
TxDOT Breaks Ground on Innovative Intersection Project
Another diverging diamond intersection (DDI) is coming to Travis County, following a groundbreaking ceremony on July 24 for the I-35 at Parmer Lane project. The Texas Department of Transportation was joined by Texas Transportation Commission Chairman J....
Cindy Riley – CEG Correspondent - Tue May 21, 2019
ADOT Oversees $50M Project to Improve Interchanges
Described as a project that will help move people and products for decades to come, a $50 million undertaking to reconstruct two busy interchanges along Interstate 17 in north Phoenix, Ariz., is under way....
