ITTC Project

K-16 Over Tuttle Creek Fatigue Repair Project

Project Award Date: 11-01-2003


The proposed work consists of engineering judgments and analyses as to the best probable "fixes" for the Tuttle Creek Bridge. During the 1950s and 60s when the Bridge was built, engineers did not account for the possibility of fatigue cracking due to the bridges movement in three dimensions. Present-day engineers have developed a number of solutions to repair or slow down this type of cracking, which they call out-of-plane distortion induced cracking.

Researchers from ITTC/KUs Civil, Environmental, & Architectural Engineering (CEAE) Department and Kansas Department of Transportation (KDOT) personnel have visited the Tuttle Creek Bridge and observed the fatigue cracking that is occurring. This cracking is similar to other KDOT steel bridges previously investigated by KU.

Field-testing will provide data for use in calibrating the computational model with the actual physical structure. Once the model has been "calibrated" and its behavior matches that seen in the field, the study of repair options will proceed. ITTC investigators will make repair recommendations to fix these cracking problems. The report will include expected life of the bridge after recommended repairs.

Long-term fatigue performance under truck traffic and the lowering of stress ranges will be a significant goal for the repair options. The outcome of the studies will be a fix that can be readily performed in the field.


Faculty Investigator(s): Kim Roddis (PI)

Project Sponsors

Primary Sponsor(s): KDOT

Partner with ITTC

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ITTC assistance includes initial free consulting (normally one to five hours). If additional support is needed, ITTC will offer one of the following approaches: 

Sponsored Research Agreement

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Licensing and Royalty/Equity Agreement

An ITTC goal is the development of investment-grade technologies for transfer to, and marketing by, local, Kansas, and national businesses. To enhance this process, the Center has developed flexible policies that allow for licensing, royalty, and equity arrangements to meet both the needs of ITTC and the company.

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