ASPIRE Summer 08 - Aspire - The Concrete Bridge Magazine

READER RESPONSEI am currentlyworking on thep r e l i m i n a r yengineering forthe rehabilitation of anw w w . a s p i r e b r i d g e . o r gT H E C O N C R E T E B R I D G E M A G A Z I N EProtecting Against & EvaluatingSPRING 2008FIRE DAMAGE!DES PLAINES RIVER VALLEYBRIDGE ON I-355MAROON CREEK BRIDGEREPLACEMENTLOOP 340 BRIDGESTAXIWAY SIERRA UNDERPASSLemont, I linoisState Highway 82, Aspen, ColoradoWaco, TexasSky Harbor Airport, Phoenix, Arizonahistoric concrete arch bridge in the Pittsburgharea. Part of the scope of the project is acomplete re-decking. Due to both difficult accessand the benefits of shorter project duration,we believe that a precast deck alternativemay be appropriate. Fortunately, I happenedto see in the Fall 2007 ASPIREmagazinea very similar-looking project, the MonroeStreet Bridge. The precast plank subdeck witha CIP topping is pretty much exactly what Ihad envisioned as the way to go here. I waswondering if it would be possible to getmore details from this project, whether it isconstruction photos or engineering drawings.I’m particularly interested in reinforcementand dowel details at the floor beams and anydetails with regards to the sidewalk cantilevers.I have proposed details to our client, but nothaving seen a similar job, I think their mindwould be set at ease to see details on a similarjob that has been built successfully. Please letme know if it would be possible to get any ofthis information. I appreciate your assistance.Gary Gardnerms consultants inc.[Editor’s Note: Mr. Gardner was put in touchwith the participants in the Monroe Street Bridge,Spokane, Wash., and we trust all questions andrequests were answered.]Indiana LTAP is a research/technology transferprogram funded by INDOT and FHWA. Wepublish a quarterly newsletter and are interestedin requesting permission to reprint an articlefrom your Winter 2008 issue “StructurallyDeficient Bridges are SAFE.” How might I goabout requesting that permission?Lisa Weicker CalvertWest Lafayette, Ind.I work at the University of Arkansas at Little Rockin the department of Urban Studies & Design. Weare seeking your permission to print the articletitled “Fifth Street Pedestrian Plaza Bridge” fromthe Winter 2008 edition of ASPIRE, in a report weare producing for the City of Little Rock.Kim SimmonsUniversity of ArkansasLittle Rock, Ark.The “Loop 340 Bridges” article in the Spring2008 ASPIRE is great! I was very pleased we wereable to get that project to letting in August 2004,the month before I retired. I’m now equallypleased to see it in ASPIRE.Mary Lou RallsRalls Newman LLCAustin, Tex.ZBar ad_ASP_JUN08_half pg vert3:Aspire 5/28/08 9:03 AM Page 1THERMALLYAPPLIED ZINCINNER COATING...Durable; providingcathodic protection forthe steel as needed.HIGH PERFORMANCECORROSION PROTECTIONREINFORCING STEEL BAR... Steel scrap is the primary raw material usedin the production of Gerdau Ameristeel reinforcing steel. Our mills re-usemore than nine million metric tons of steel each year, makingGerdau Ameristeel the Second Largest Recycler inthe Americas.ELECTROSTATICALLYAPPLIED POWDER OUTERCOATING... ZBAR’s first lineof defense against water andchlorides which lead to corrosion.I recently had an opportunity to read theSpring 2008 edition of ASPIRE. I was somewhatdisappointed that there were no articles dealingwith railroad bridges. As a Rail Bridge Designer,I know that the U.S. railroads use a large volumeof prestressed concrete beams and girders fortheir bridges. There are some amazing thingsthat the railroads do with their bridge designsand construction using these types of beams andgirders. One of the most amazing is that theycan change out bridge superstructures in hours,not days or weeks. I believe your readers wouldbe fascinated with what railroads can do withprestressed concrete elements.Jeffrey TeigHDR Engineering Inc.Omaha, Neb.ASTM A1055 COMPLIANTStandard Specification for Zinc and EpoxyDual Coated Steel Reinforcing Bars.MEETS FHWA HIGHWAY FOR L.I.F.E. REQUIREMENTSCALL 888-637-9950FOR SALES & ORDERING INFORMATIONwww.gerdauameristeel.com/zbar4 | ASPIRE, Summer 2008