Computer simulation technology aids Ohio River Bridges Project design teams
November 2007 - River barge pilots discovered recently what it’s like to
maneuver with two new bridges connecting Jefferson County, Ky., with southern Indiana.
The Seamen’s Church Institute (SCI) conducted computer simulations based on the
bridge types selected for the new Downtown and East End Bridges. The simulations,
generated by a technology never before used for bridge projects in Kentucky or Indiana,
were run by professional pilots Nov. 8 and 9, 2007, at SCI’s Paducah, Ky., facility.
SCI uses life-size pilot wheelhouses and sophisticated computer software and imagery
to produce a simulated river environment. Computer programs were created using information
- such as pier arrangements - for the two bridge types selected. In addition, construction
scenarios for each of the bridges were included for the river pilots to experience.
The pilots maneuvered through the bridges under a variety of river and weather conditions
and will share their observations and experiences with the bridge design teams.
The information gathered will also be provided to the Coast Guard.
“It’s a tremendously helpful technology because it duplicates what it’s like to
approach and steer between the piers of a bridge,” said Matt Bullock, the Kentucky
Transportation Cabinet’s interim project manager for the Ohio River Bridges Project.
“The simulations can be set using various conditions, such as high winds, different
flow conditions, daylight or night, approaching from down- or up-river, and so forth.
Barge captains have to prepare for many factors as they approach a bridge structure,
such as strength of current, weather conditions, visibility and turning angle --
this technology illustrates, in very lifelike circumstances, what pilots would face
as they approach the proposed bridges.”
The Coast Guard, which has oversight responsibility concerning pier placement and
configuration, has approved the span widths of the main navigational channels for
both bridge types. However, the simulations may show that changes are needed in
the shape or design of bridge piers, which could affect sightlines at river-level.
Founded in 1834, the SCI is a voluntary, ecumenical agency affiliated with the Episcopal
Church. The Institute promotes safety, dignity, and improved working and living
conditions for all mariners and seafarers.
SCI provides practical and relevant training aimed specifically to deep-sea, coastal,
and inland mariners. Instructors use the Institute’s computer-based simulation system
to improve mariners’ navigational and bridge-management skills in a risk-free environment.
Consistent and regular training creates a safer workplace and a greater awareness
of America’s waterway system. For more information, visit the SCI Web site at
http://www.seamenschurch.org/CME/cmefront.htm.