Two Methods Of Culvert Repair Successful In Indiana

By Jeff Griffin, Senior Editor | March 2011, Vol. 66 No. 3

“The area is heavily forested, and we had to cut roads on both sides of SR 101 to bring the materials and equipment to the location of the culvert,” he explained. “Because of the large size of the structure, we built a cofferdam to slow the flow and accommodate flow during rain events when we were typically unable to work for one to two days.

“Originally we intended on using a crane to lower material to the culvert via a closed road. After discussing with ODOT and adjacent property owners, we actually constructed two dirt paths to bring materials down slopes with a Caterpillar 320 excavator and a Cat 277 track skid-steer loader.”

Indiana Reline personnel cleaned the host culvert, installed bracing and blocking between the liner and the host to prevent displacement during grouting, and the SPR liner was installed. No pits were required. In addition, Indiana Reline built two 14-cubic-yard bulkheads, installed internal bracing and pumped 620 cubic yards of 350 psi light-weight cellular grout in the annular space between the host and liner pipes per the project specifications.

The project began in September of 2010 and was completed in November 2010.

The sliplining project with the Hydro-Bell inlet was to rehabilitate 317 linear feet of corrugated metal pipe (CMP) culvert in Wooster, OH, with 63-inch solid-wall Snap-Tite HDPE liner and replacing 30 feet of fill. The culvert was under U.S. Highway 250, a divided, four-lane highway.

The pavement above was already beginning to fail due to culvert deterioration and backfill material loss, said Bates.

First the host pipe was cleaned and runners were installed for liner to slide on. “The existing culvert had deformed from a 72-inch culvert down to 61 inches in several spots, which required hand-mining portions of the old CMP as the 63-inch liner was installed,” Bates said. “Some clearing was necessary, and a bench was cut on the slope above the outlet end as a perch for the CAT 330 excavator used to insert the liner.”

After successful installation and bulkhead construction, light-weight cellular grout was pumped into the annulus between the host pipe and new HDPE liner.

“The deterioration of the host culvert and subsequent loss of backfill material surrounding the culvert resulted in 25 percent more grout being installed than calculated,” Bates said.

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