Safe & Sound -
UREGRID Offers Advanced Waterproofing for 215 Bridge Decks.
 In order to restore the condition of 802 of Missouri's lowest rated bridges over a five year period, The Missouri Department of Transportation (MODOT) initiated the unprecedented Safe & Sound Bridge Improvement Program (Safe & Sound). MoDOT's visionary
Safe & Sound program was designed to:1 - Restore all project bridges to at least a “satisfactory” condition (6)
- Minimize the duration of public inconvenience during construction and maintenance.
- Maximize community and stakeholder acceptance.
- Maintain project bridges for a minimum period of 25 years after they are upgraded, then return project bridges to the Missouri Highways and Transportation Commission in “satisfactory” condition (6)
While the program was originally envisioned in 2007 as a Design-Build-Finance-Maintain contract, current turmoil in the financial markets made the proposal unaffordable, so MoDOT moved forward with alternative methods to deliver Safe & Sound.2  In May of 2009, KTU Constructors was selected to replace 554 bridges in a single Design-Build package. The remaining 248 bridges are being improved using a modified Design-Bid-Build approach, where projects are grouped by type, size or location to accelerate construction schedules.
“These badly needed improvements will mean crashes avoided, jobs created and the ability to get where you are going easier.” 3 Due to the long-term strategy of the Safe & Sound program, waterproofing was identified as a desired activity for the 215 box-beam bridges, which are to receive an asphalt wearing surface. Unfortunately, Departments of Transportation and other entities in the US who own, maintain and operate these types of bridge decks have tried conventional systems for waterproofing, but have experienced and documented high risk of failure and limited service life. POLY-CARB has been working closely with KTU Constructors on the Design-Build to offer a solution to their challenge of protecting these 215 bridge decks. “Speed of construction and flexibility in construction schedules to respond to local issues were also critical components of MoDOT's program requirements. For 493 bridges on low-volume routes, the contract requires the average closure be 45 days.”4 POLY-CARB MARK-155 UREGRID met the criteria and was selected as the solution.  POLY-CARB MARK-155 UREGRID is a proven, cost-effective, easy-to-implement advanced polymer monolithic waterproofing system for conventional and reinforced concrete, box-beam and metal bridge decks that have an asphalt wearing surface. It is spray-applied with robotic technology specially developed for this application and provides long-term protection from corrosion caused by water, de-icing chemicals and other contaminants to extend the life of the asset.
- Proven performance
- Reliable impermeability
- Technical validation in MO, OH and UT - Cost-effective
- Long waterproofing service life to extend asset life
- Maximizes current budgets
- Minimizes future expenditures - Easy-to-implement with minimal traffic inconvenience
- Controlled installation with robotic technology
- Fast curing for expedited back to service time
- Extended construction season Pete Rahn, MoDOT Director in 2008, said, “We promised to give Missourians a safer transportation system by fixing hundreds of our lowest-rated bridges in a short amount of time, and we'll deliver on our promise. We are excited to get to work. The sooner these bridges are under construction, the sooner Missourians will reap the benefits - safer roads, more jobs and increased mobility.” 2 POLY-CARB has completed the waterproofing of 49 Safe & Sound bridges with the POLY-CARB MARK-155 UREGRID Waterproofing System. By December 2012, all 215 contracted bridges are scheduled for completion. 
To learn more about this project and how to protect your infrastructure from the insidious effects of water, salt, weather and wear, contact POLY-CARB at 1.800.CALL.MIX.
Dow POLY-CARB is the leader in developing and delivering proven Creative Chemistry for Infrastructure that protects the public through quality performance-based, low risk, cost effective solutions that add safety and are easy-to-implement.
Now, coupled with the world-class resources of the 100-year The Dow Chemical Company, POLY-CARB's 37-years of experience are strengthened and further positioned to add even higher value to our society and environment for unparalleled value, performance and service.
More information about Dow POLY-CARB, a division of Dow Formulated Systems, a business unit of The Dow Chemical Company is available at www.poly-carb.com.
|
1 Missouri Department of Transportation. (2007-11-05). “MoDOT Receives Proposals for Safe & Sound Bridge Improvement Program.” Press release. Retrieved 2011-06-01.
2 Missouri Department of Transportation. (2008-09-18). “MoDOT Launches Largest Bridge Project In State History.” Press release. Retrieved 2011-06-01.
3 Missouri Department of Transportation. (2008-09-19). “Guest Commentary: 802 Better Bridges By Pete Rahn, director, Missouri Department of Transportation.” Press release. Retrieved 2011-06-01.
4 Missouri Department of Transportation. (2009-05-21). “KTU Constructors Selected to Complete Safe & Sound Bridge Improvement Program.” Press release. Retrieved 2011-06-01. | Project:
Safe & Sound Bridge Improvement Program
Location:
Missouri
Material System:
POLY-CARB MARK-155
UREGRID
Project Scope/Size:
215 Bridge decks
686,540 sq. ft.
Substrate Material:
Concrete box-beam construction
Application Method:
Spray-applied with robotic technology specifically developed for POLY-CARB MARK-155 UREGRID application
Initial Set:
Average: 2 seconds
(Varied with ambient & substrate temperatures)
Installation Time:
Waterproofing for each bridge installation from start to finish within a single working day.
Project Challenge:
- Managing multiple locations throughout the state
- Varying weather conditions
- Tight implementation schedule
Scheduled Completion:
December 2012
General Contractor:
KTU Constructors
Subcontractor:
POLY-CARB, Inc.
|
