Department of Transportation Applications

Department of Transportation projects can include culverts under roads, stormwater pipes and catch basins. The Poly-Triplex liner is typically stronger by itself than a new corrugated culvert. These deteriorated culverts can be relined with Poly-Triplex liners with little or no disruption of highway traffic. Rectangular or round catch basins and junction boxes can be lined with Poly-Triplex liners. The liners in these structures may be extended into the connecting horizontal pipe, further protecting the seal between the structure and the horizontal pipe. The following is an example of a D.O.T. project where the pipe and the junction box were lined with the Poly-Triplex Liner System.


Culvert Rehabilitation - Florida D.O.T., Destin, FL
Department of Transportation Problem: 30" Culvert pipe located under 4-lane road near bridge was damaged allowing sediment to infiltrate into the pipe. The roadbed and bridge support was being undermined.
Solution: The structure was lined in one day without excavation of US Hwy. 98 and with no traffic disruption, stopping all infiltration of sediment into the pipe. Considerable cost savings were realized over other conventional methods of repair or replacement.
CASE STUDY


Culvert Rehabilitation - City of Sylvester, GA
Department of Transportation Problem: These culvert pipes, located under a busy highway, were in very bad condition causing road bed problems. The owner wanted to fix the culvert pipes prior to repaving and adding a sidewalk. The culvert was buried 10 feet under the roadbed making excavation both difficult and expensive.
Solution: Poly-Triplex Certified Installer diverted the flow through one of the pipes, cleaned and prepared the structure and the liner. With a crane and winch, the liner was pulled through the structure. Liner was then cured-in-place using air pressure and steam heat. Inflation bladder was removed to expose a structural and monolithic liner from end to end, extending approximately 12" beyond both ends of the existing culvert, then flow was diverted back into the lined pipe. The process was then repeated on the second pipe.
CASE STUDY