International Correspondence Schools · Scranton, Pa. : The Colliery engineer co. · leaf 644
sing mile post 96, and atonce conveys to the mind a definite idea of location. Onthe other hand, bridge No. 125, unless some other explana-tory reference is given, is of small aid in locating a bridge.Bridge numbers are usually painted in black figures threeinches in height on a white ground.A… … Fig. 620. Fig. 621. be of uniform height, and uniformly placed. The first right-hand cap of a trestle and the first right-hand tie of an openculvert on passageway are suitable locations for bridgenumbers. Suitable forms of bridge numbers are shown inFigs. 620 and 621. 1230 RAILROAD STRUCTURES.…
Railroad engineering
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