Silver wins gold   Roads & Bridges September 2002   Marci Crossan
How does traffic flow affect the "little guys" during a big event like the Olympics? The redesign and construction of the Silver Creek Junction Interchange prior to the Olympic Games in Salt Lake City was a team effort between the engineers at H.W. Lochner, local businesses and a software program called AutoTURN that put everyone's mind at rest.

String music   Roads & Bridges May 2002
Over prolonged periods of time there becomes a disparity between the lifecycle of a software program and the design data derived from those systems. The data compatibility issue is even more pronounced when using versions of computer-aided design (CAD) systems that have been updated every year or two. The data dilemma continues to grow as new automation innovations and the advent of 3-D CAD software tools have been introduced to raise levels of precision, visualization and productivity. In the case of transportation design projects where duration is a question mark, the function of preserving, refining and expanding roadway design has been forced to adapt to the inevitable changes in technology. But the discipline also reaps big benefits along the way.

A different design   Roads & Bridges May 2002   Toorak Zokaie, P.E., Ph.D
The American Association of State Highway & Transportation Officials (AASHTO) LRFD specifications have been accepted by several states as the design specification of choice since their adoption in 1994. However, the experience with the LRFD specifications for the design of cast-in-place (C.I.P.) post-tensioned concrete box girder bridges is limited. Several major changes have been made to the LRFD design specifications that have a direct effect on the design and safety of these bridges and have imposed a new set of design tasks to be performed. New automated design tools are needed to assist bridge engineers and facilitate the transition to the LRFD specifications.

A quick survey   Roads & Bridges April 2002   Tom Service
Using Cyrax scanning technology, David Evans and Associates Inc. (DEA), Denver, surveyed 24 bridges in 40 days without disrupting traffic on the heavily traveled I-25 through the Denver metropolitan area. T-REX, the Transportation Expansion Project launched by the Colorado Department of Transportation (CDOT), includes highway expansions, improvements and the addition of light rail along 18 miles of I-25 and I-225. The $1.67 billion design-build project includes reconstruction of interchanges and bridges, a new drainage system and improved pedestrian and bicycle access.

Software development makes roadway design easier   Roads & Bridges May 1999

ONLINE   Roads & Bridges May 1996   David Banasiak

ONLINE   Roads & Bridges April 1996   David Banasiak

ONLINE   Roads & Bridges February 1996