Item(s) of Interest: Staged construction of a bridge where fabric walls were used to build and shore the approaches. The site also required sheet pile shoring and a culvert extension.
Observations and Points of Discussion:
Site was very congested with utilities, drainage structures, the existing bridge, and the replacement bridge.
Hilfiker fabric wall utilized to shore approaches on the new bridge.
The fabric wall looked good with straight and fairly plumb walls with very little bulging.
The project will also include a 12 ft. soil nail wall in a cut section.
A value engineering proposal (VEP) to install a modular block wall with anchored temporary shoring has been submitted.
Anticipated traffic backups, which did not materialize, resulted in the contractor changing the traffic control plans to limit the time with a 2-lane pattern.
Due to the site congestion, 3-D CADD modeling would have been very useful for identifying conflicts.
NC DOT
NC DOH
NC GOV
