The Chesapeake Bay Bridge-Tunnel began a Substructure Repair Project in January 2007.  This project was awarded to Precon Construction of Chesapeake, Virginia in the amount of $13.5 million.

The project includes repairs to various substructure units (cylinder piles and pile caps) of northbound Trestle A' and A (northbound).  The remainder of the work consists of substructure bent repairs to be performed at scattered locations on northbound Trestles B and C and on southbound Fisherman Inlet Bridge.

Work consists of performing maintenance repairs and structural repairs, both above and below water, on 624 54-inch diameter concrete cylinder piles  and performing maintenance repairs on 181 pile caps.  Additional work includes installing cathodic protection fiberglass jackets around 218 piles and applying a protective coating to the vertical faces of various bent caps and to the above-water and above-ground portions of some non-jacketed piles.  A number of the piles that require jackets also require the installation of structural carbon fiber bands to provide structural confinement capacity.  The work also involves applying a sealer to the tops of some of the bent caps in an area above the piles.

This anticipated length of the project is two years.

This project is nearing completion, with 211 fiberglass cathodic protection jackets installed around some of the pilings.