Sandbridge Bridge Replacement

The temporary bridge provided the Sandbridge community continuous access throughout construction. Before the temporary bridge construction began, a Type III Impervious Turbidity Curtain was installed in the waterway. The Turbidity Curtain controlled construction related sediment in Hell’s Point Creek.
After clearing the marsh of trees and stumps, the area was filled in with structural fill. The fill was followed with layers of nonwoven geotextile fabric, biaxial geogrid and stone.
These layers, also known as lifts, stabilized the approach roadways for the temporary bridge.
The nonwoven geotextile fabric is a drainage layer that separates the course aggregates, promotes positive drainage and prevents stones from falling through the geogrid’s apertures. The geogrid stabilizes the subgrade by spreading the load across the entire plane.
After the bridge approach roadways were stabilized and capable of bearing the weight of heavy machinery, temporary bridge construction began. The temporary bridge began accepting traffic in April 2019.