Web-Exclusive Better Bridges coverage
by John M. Simpson, P.E., Transpo Industries
A successful slurry overlay project is the talk of Davidson County, Tennessee.
The Chickasaw Bridge, spanning the Ellington Parkway, was slated for four-day rehabilitation by contractor Jamieson Construction.

The T-48 resists the effects of UV degradation, while the unique slurry application method allows for easy installation with minimum traffic disruption, Transpo maintains. The 3/8- inch-thick waterproof overlay adds minimal dead load to the structure (3 to 4 lbs/ sq ft), while the broadcast aggregate surface will maintain high skid resistance. With the reduction of permeability, there will be less rust and spalling.
With one lane of traffic open to the public, Jamieson Construction planned this bridge preservation project to take four days to complete. However, it was completed in just 12 hours.
Work began at dawn… and as dusk approached… the contractor decided that the project might be finished in a few more hours. Temporary lights were rented and work continued. The additional cost of the light rental was small compared to the savings realized in reduced labor and traffic control

Project at-a-glance:
Material: Transpo’s T-48 Slurry
Location: Chickasaw Bridge, TN
Contract: Project #19960-4216-04
Size: 26,000 Square Feet
Application Time: 12 Hours
Owner: Tennessee DOT
Contractor: Jamieson Construction
Supplier: Hiwassee Materials, Charleston TN

Material: Transpo’s T-48 Slurry
Location: Chickasaw Bridge, TN
Contract: Project #19960-4216-04
Size: 26,000 Square Feet
Application Time: 12 Hours
Owner: Tennessee DOT
Contractor: Jamieson Construction
Supplier: Hiwassee Materials, Charleston TN
This article was written and contributed by New Rochelle, N.Y.-based Transpo Industries, Inc. Photos are also courtesy of Transpo Industries.