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 97% complete, with 211 fiberglass cathodic protection jackets installed around some of the pilings.