Why do I feel pinching when I approach the bridge.
Feeling pinching or a sudden jolt when approaching a bridge is often due to structural or design issues in the transition area between the road and the bridge deck. Here are the main reasons this can happen: --- 1. Differential Settlement The road leading up to the bridge (approach) and the bridge itself often settle at different rates due to varying foundation conditions. If the approach embankment settles more than the bridge abutment, a bump or gap can develop, causing a noticeable jolt. 2. Improper Expansion Joints Bridges have expansion joints to allow for movement due to temperature changes. If these joints are misaligned, damaged, or not properly maintained, they can create uneven surfaces, leading to pinching or jolting sensations. 3. Poor Compaction of Backfill The material behind the bridge abutment (backfill) may not have been compacted adequately during construction, causing it to settle unevenly over time and create a dip or gap. 4. Drainage Issues Inadequate drainage near...
