Chesapeake Bay Bridge-Tunnel -- CAPITAL PROJECTS

scour remediation project

The Chesapeake Bay Bridge-Tunnel is currently undergoing a Scour Remediation Project. This project consists of placing a stone blanket over portions of the Thimble Shoal Tunnel and the Chesapeake Channel Tunnel in areas where the cover materials have eroded over the years. Work will also be performed in designated areas along Trestle B northbound and Trestle C northbound. This involves filling localized scour holes with riprap at some bent locations immediately followed by placing longitudinal riprap dikes on the east and west sides of the trestles at designated locations or by placing riprap as scour protection blankets beneath and on the east and west sides of the trestles at the designated locations.

The project was awarded in January 2008 to Skanska USA Civil SE, Inc. of Norfolk, VA in the amount of $19 million. All work will be waterborne, thus not interrupting the flow of traffic and it will include the placement of approximately 260,000 tons of stone. It is estimated to take three years to complete the project in its entirety.

The District routinely performs hydrographic surveys to monitor scour across the facility.

To date, this project is 66% complete and more than 196,876 tons of stone have been placed.


Barge of Stone Arriving from the Quarry in Havre de Grace, MD		Tugs Position the Rig Prior to Stone Placement

Front End Loader Filling the "Skid Pan"		Rip Rap Stone Being Placed with a "Skid Pan"

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