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Building New Bridges from Old

by James C. Tillitt, (M.ASCE), Pres.; Wheeler & Tillitt, Inc., Minneapolis, Minn.,


Serial Information: Civil Engineering—ASCE, 1978, Vol. 48, Issue 6, Pg. 109-110


Document Type: Feature article

Abstract:

The Duluth, Missabe and Iron Range Railway Co. needed a new 150-ft (64-m) two-span railroad bridge. Minimum time and low cost were the demands. In response, the designers used steel girders and decks from two old bridges. The solution lead to a $150,000 saving (original cost estimate $500,000) and completion four months ahead of schedule. The bridges that furnished the steel remained open and in use during the removal period. Today the donor bridges are still doing the job they have for the last 70 years.

Subject Headings: Steel bridges | Railroad bridges | Span bridges | Rail transportation | Girder bridges | Bridge decks | Benefit cost ratios

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