Upper Keys Marine Construction, Inc has performed bridge and bridge approach construction throughout Monroe County. Monroe County has called on our company to perform maintenance on bridges and install signs on Boot Key Bridge and Card Sound Bridge. We also did the foundation repair on Cow Key Bridge in 2005. In 2004 we set the new pedestrian walk way that sits adjacent to the bridge on Ocean Bay Dr. in Key Largo. In 2005 we demolished the existing Key Colony Beach Bridge, and rebuilt the new bridge including the approach and pedestrian walkway.