—Differential settlement at the roadway/bridge
interface typically results in an abrupt grade change, causing
driver discomfort, impairing driver safety, and exerting a
potentially excessive impact traffic loading on the abutment.
Bridge approach slabs are used to keep the effects of this
differential settlement within tolerable limits. In many cases, the
final magnitude of settlement exceeds the working range of an
approach slab, necessitating costly roadway and slab repairs.
The potential causes for this problem purely site specific. Hence
this settlement problem may not have a unique solution. The
purpose of this study was to investigate differential settlement at
bridge approaches and give possible solutions of this problem
using available materials and manpower in the context of
Bangladesh. In most cases the differential settlement occurs at
mid portion. This can be said to be the most critical location.
—Bangladesh, bridge approach slab, differential
settlement, mitigation techniques.
The authors are with the Department of Civil Engineering, Ahsanullah
University of Science and Technology, Bangladesh (e-mail:
Cite: Md. Firoz Mahmood Ovi, Md. Ridwan Bin Alam, Abontee Barua, S. Halder, and Md. Waliur Rahman, "Differential Settlement at Bridge Approaches’ in
Bangladesh," International Journal of Engineering and Technology vol. 6, no. 5, pp. 381-385, 2014.