Concrete reinforced bridges and tunnels deteriorate over time due to constant water exposure, chemical attack, and external structural forces. Concrete bridge beams, connections, joints, drive surface, abutments, lower bents, caps, and piles, particularly those near or extending into water, will require concrete spall repair, joint resealing, corrosion protection, fiberglass pile jackets, exterior protective coatings, and epoxy crack injection repairs. Tunnels may require joint restoration and sealants, polyurethane resin (PUR) chemical grout water control injection to halt infiltration., To inhibit reinforcement corrosion, zinc anodes are installed and metalized, spray on provide protection. Progressive deterioration of these structures requires on-going inspection and preventative maintenance programs. Suspected distressed structures should require a thorough assessment or survey. Defective locations and areas of concern identified in the survey, are noted. Repair specifications by ICRI standards or those by an experienced restoration engineer will be used for repairs as performed by a qualified restoration contractor with extensive project experience on bridges and tunnels.
Some additional considerations for every application: