DOT, Fed Hwy Admin, Office Of Acquisition Management, 400 7th St, SW, Room 4410, Washington, DC 20590

A -- IMPROVED MATERIALS AND SYSTEMS FOR CABLE-STAYED BRIDGES SOL DTFH61-98-R-00058 DUE 052598 POC Lise S. Lyles, Contract Specialist, 202-366-4229 The Federal Highway Administration (FHWA) plans to issue a full and open solicitation. The scope of work consists of the following: (1) Review the performance of existing cable-stayed bridges worldwide and document their failure or success regarding corrosion protection. (2) Fabricate and perform accelerated corrosion tests to evaluate all available stay-cables with at least three major currently used anchorage systems in simulated adverse environment on fully stressed laboratory specimens. (3) Design of the fabricated specimens shall be such that it permits the collection of some nondestructive data during the evaluation period. Correlate the collected data with visual observations and the condition of metallic components extracted after autopsy of the specimen at the end of the evaluation period or at failure whichever occurs first. (4) Evaluate the use of cementious grout, petroleum wax and epoxies/polymers as encapsulants for the protection of the main tension element in the exterior tube/pipe as compared to the unfilled or absent tube/pipe in the Freyssinet system. (5) Based on the above research, develop suggested recommendations for incorporation into the Post-Tensioning Institute's "Recommendations for Stay Cable Design, Testing and Installation." NOTE: Submit written requests for copies of the solicitation to the address indicated above and include two (2) self-addressed gummed labels. No telephone, fax or E-mail requests will be accepted. All RFP's will be mailed in 3 " diskette, WordPerfect 6.1 format, to offerors who send in written requests. Amendments, if any, will be mailed either in hardcopy or diskette format. The RFP and its forms/attachments are also available for downloading on our Webpage at HTTP://WWW.FHWA.DOT.GOV/AAA/HAMHOME.HTM. If you download copies of solicitations from our Webpage you will NOT automatically receive any amendments to those solicitations unless you have also sent in the written request. It is your responsibility to check back frequently to see if FHWA has issuedany amendments to solicitations you have downloaded. All amendments will be posted on, and may be downloaded from, our Webpage. (0065)

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