< Back to project list
|
|||||||||||
|
Scope of Work:
· The project involved the installation of two 550 linear feet (LF) of steel conduit lines carrying power along State Route 22 and underneath the base of the South Bay Bridge at the southern end of Lake Champlain. Workers cut and removed shoulders along the road to allow for the placement of new conduit and excavated 450 CY of gravel and dirt to accommodate precast manholes located at each end of the bridge. Since the excavation for the manholes was deep and close to traffic, trench boxes were utilized.
· Hanging 1100 LF of steel conduit underneath the bridge required the use of pontoon floats, modified at D.A. Collins’s fabrication shop specifically for this project. An adjustable scaffold was built to mount on the deck of the float because the girders of the bridge were curved.
· Once the manholes and conduits were installed, crews pulled the cables through the conduits using an electric winch. The steel cables were spliced with PVC conduit in the manholes that are approximately 600 LF apart. Approximately 700 LF of PVC conduits were used to connect to power polls.
· Rebuilding the shoulders of the road required 150 CY of sub base and 125 tons of asphalt. Manholes were backfilled with 30 CY of flowable fill.
· Daytime traffic delays were minimal and the bridge had to be open for two way traffic at night time.
· This project was completed on time, under budget and safely.
|
|||||||||||