Bridge Mastery in 2026 – Ace the NHI Bridge Inspection 130055 Test and Build Your Success!

Expansion joints are built to let the bridge deck move in the longitudinal direction as temperatures change and as the structure experiences loading from traffic, so the deck can expand and contract without cracking or stressing other elements. They also help keep water out by managing that movement with a proper seal. As joints age, signs of deterioration show up in several ways: leakage through the joint indicates the seal or flashing is failing; debris buildup in or around the joint can impede movement and trap moisture; spalling or chipping of concrete at the joint area reveals water intrusion and freeze–thaw damage; and cracks in the deck or around the joint often accompany seal degradation and movement issues. Together, these indicators point to compromised joint performance and the need for inspection or repair.