PERFORMANCE OF BRIDGE JOINT SYSTEMS DESIGNED FOR LARGE MOVEMENTS

An earlier effort to evaluate bridge expansion joints was augmented to concentrate on those joints designed to accommodate large movements. Several States were included in this new project, and modular and finger systems were evaluated for their in-place condition. A total of 136 modular joint systems and 42 finger joint systems were included in the survey. The project focus was to evaluate the performance of each type to assist the States in determining the performance and cost effectiveness of using either modular or finger joints for large movements. Each joint in the survey was evaluated to determine its in-place condition. The condition of the surface elements as well as the hardware below the deck surface was rated using the prescribed evaluation criteria. Additionally, each joint was examined for its ability to control bridge roadway runoff and protect the structural components below the deck. For the most part, the modular joints reviewed, with the exception of a few locations, appeared to be performing as intended. The majority of the hardware was in very good condition. Buildup of debris was present in the recessed sealing elements in most of the modulars, particularly heavy at the shoulder areas of the deck. Most of the joints less than 11 years old were watertight, with only 3 that were actively leaking and several others which showed evidence of water getting through the joint. The ones incorporating aluminum components had varying degrees of surface damage and adjacent concrete deterioration. The finger joints also were performing as designed, however, the open finger variety presented most of the problems for this joint type. The surface of the joints exhibited minor scrapes and gouges at about half ot the sites. There was some cracking of the header concrete. All of the troughs inspected contained varying amounts of roadway debris. The joints with troughs appeared to be handling the surface water adequately. On the other hand, the condition of the components below the open joints was poor in several locations.

  • Corporate Authors:

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Romack, G P
  • Publication Date: 1992-1

Language

  • English

Media Info

  • Pagination: 55 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00625095
  • Record Type: Publication
  • Source Agency: Federal Highway Administration
  • Report/Paper Numbers: FHWA-SA-92-018
  • Files: TRIS, USDOT
  • Created Date: Oct 15 1993 12:00AM