  
    Alpha & Omega Group was selected to perform an NBIS Inspection of the Albemarle Sound Bridge. This 3.5 mile long concrete roadway bridge spans the Albemarle Sound between Washington and Chowan Counties in North Carolina. Having been built in the 1930's, this bridge required special care.
  

The bridge itself consists of prestressed precast concrete trestle slabs and prestressed precast concrete segmental box beams supported by post and beam piers with conventionally reinforced concrete caps on prestressed precast concrete piles.

Inspection included the measuring of joint openings with surface temperature measured on the deck surface and the bottom of the box beam directly below.

The entire bridge deck surface was surveyed by CH Engineering using a high density laser scanning technique. The data was tied to the NC state plane grid system horizontally by incorporating four OPUS GPS points. Ω

Overview
  Client:

      NCDOT Bridge Management Unit
Location:

      Albemarle Sound, NC
Contact:

  Dan Holderman, P.E.
 
      State Bridge Management Engineer  

      919-835-8217
    
Start / completion:

      9/2009 – 11/2009
Project fee: 

      $181,895
Project manager: 

      Forrest Robbins

  Experience
  Visual inspection
Documentation