CTRE is an Iowa State University center, administered by the Institute for Transportation.

Address: 2711 S. Loop Drive, Suite 4700, Ames, IA 50010-8664

Phone: 515-294-8103
FAX: 515-294-0467

Website: www.ctre.iastate.edu/

Iowa State University--Becoming the Best

Identification of the Best Practices for the Design, Construction, and Repair of Bridge Approach Sections

Men injecting foam through small holes in pavement

Injecting high-density polyurethane under the approach slab

Bridge-approach-void-under-appraoch-pavement

Researcher(s)

Principal investigators:

Student researchers:

Project status

Completed

Start date: 08/15/02
End date: 12/31/04

Publications

Report: Final Report: Identification of the Best Practices for the Design, Construction, and Repair of Bridge Approach Sections (TR-481) (9.7 mb pdf) January 2005

Related publications:

Sponsor(s)/partner(s)

Sponsor(s): Iowa Highway Research Board

About the research

Abstract:

Bridge approach settlement and the formation of the bump is a common problem in Iowa that draws upon considerable resources for maintenance and creates a negative perception in the minds of transportation users. This research study was undertaken to investigate bridge approach problems and develop new concepts for design, construction, and maintenance that will reduce this costly problem.

As a result of the research described in this report, the following changes are suggested for implementation on a pilot test basis: