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~.. <br />5 <br />• Sheet pile, i-cirula <br />tructure, - ft <br />~~ <br />~~ <br />Transition ,q ~ ~ <br />arroyo `~ RRQ~ <br />~~ <br />\ YQ <br />,,~ „ <br />'' ///i <br />~- /~~ <br />/ i <br />//i i <br />/~ ~ i <br />4980 <br />--- -- <br />- - - -- <br />~ ~ ~ ~--- <br />~' ~ i <br />5-ea, 75 RCP p ~, ~ ~ i ~ / ~ / <br />Q= w-6, /ice ~• ~i 1 <br />/~ Q~Q- ~ i <br />/ ~ /~. <br />/ / / <br />i/ ~ ~ <br />Riprap tr ' 'on i , ~ <br />~. <br />~ Preformed riprap <br />~ scour basin <br />~~ ~~ <br />A' ~' ~ <br />/~ <br />/~ ~ i / <br />~ // ~ . / ~ Transitio arroyo <br />i / <br />i, <br />i ~ <br />i <br />~ Sta 38+10 RR = <br />~ to 35+50 Anoyo "A" <br />top of wall = 4978.0 <br />crest 4974.0 <br />4975 ,- - - . _ -- - - - - <br />sheet pile, semi-circular _/ <br />4970 -drop shucture~ H = 4 tt ----- <br />4965 F - _ <br />Existing grade <br />` ~~ <br />inv. =4970.0 <br />4969.0 <br />Ri ap transition <br />Saddle headwall --~ <br />4960 t ~ ~_~ <br />41+00 40+00 39+00 <br />top of rail = 4977.0 <br />Transition arroyo C~ 0.5% <br />49i <br />4968, ~ <br />%- <br />~~ <br />NOTES: <br />1. Culverts will pass 100-year flood of 815 cfs. <br />2. Drop structure required to pass 100-year runoffunder <br />railroad spur. Construct drop structure from sheet pile <br />using asemi-circular spillway and concrete apron. <br />Provide riprap transition from drop structure to <br />culvert. <br />3. Provide erosion protection at culvert outlet using a <br />riprap lined, preformed scour basin, per FHWA HEC - <br />14 <br />I ~ i I GCC Rio Grande <br />Preformeriprap ~ Red Rock Plant and Mine <br />scour bas n ~ ~I <br />ARROYO "A" RR SPUR CULVERT <br />I ~~~ Station 38+10 <br />38+00 37+00 36+00 f35+00 <br />June 13, 2002 <br />i <br />' ,li.' . <br />- - ---`-'' - - - (a' <br />