Research Activities: 1999

Strengthening of an Impacted PC Girder on Bridge A10062, St. Louis County, Mo.




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Sequential Number


Identification Number


Matching Research Agency

Missouri Department of Transportation (MoDOT)

Principal Investigator

Antonio Nanni, Professor
Civil Engineering
Center for Infrastructure Studies
224 Engineering Research Laboratory
Rolla, MO 65409
p(573) 341-4497
f(573) 341-6215

Student Involvement

One (1) graduate student

Project Objective

The proposed project aims to demonstrate the feasibility of externally bonded fiber reinforced polymer (FRP) reinforcement for the flexural strengthening of a damaged PC girder. The demonstration will consist of design, field construction, and performance monitoring. The proposed project will lead to a bridge strengthening protocol for consideration by MoDOT.

Project Abstract

The project will consist of design, field construction (by DOT personnel), and performance monitoring of a structural repair of an impacted PC bridge girder. The behavior of the structural repair will be closely monitored over the course of three to five years. In addition, patches of externally bonded FRP with known defects will be monitored and samples taken to the laboratory over time for mechanical characterization to verify the durability of the system.

Task Description

  1. Feasibility
  2. Demonstration
  3. Monitoring

Anticipated Benefits

The proposed project will lead to a structural repair protocol for consideration by MoDOT. The training of a maintenance crew will add a new capability to the department.

Modal Orientation



Project Start Date:07/01/1999
Project End Date:06/30/2000

Relationship to other Research/Projects


Technology Transfer Activities

A final technical report and technical papers, training of a maintenance crew

Transportation Research Board Keywords

Flexural strengthening bonded fiber and reinforced polymer