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<br />U. S. Highway 85 to I::JE__~_p.r:a\",,[llLJ2,l.?Land_.lc7:~ <br /> <br />The 100 year future fJ.ows with impr()v~d dr"ainageway conditions will <br /> <br />be 7,400 cfs in the reach. Downstream oJ LSc Highway 85, the First <br /> <br /> <br />Creek channel is fairly well definedc IJowever, upstream of UcS_ High- <br /> <br /> <br />way 85 the channel is not defined. Ther(~ are f-our major crossings in <br /> <br />this reach. They are, U.s. Highway 85 a 1:. Station 143+80, Union Pacific <br /> <br />Railroad at Station 149+30, East l04th Avenue at Station 163+90 and <br /> <br /> <br />Interstate Hi:~hway 76 (formerly I-80S) a'c_ Station 171+40. The above <br /> <br /> <br />four crossings have been designed to IJas:; lhc IOO-year future flow <br /> <br /> <br />wi thout overtopping. In order to accompli sh th:lS, the existing inverts <br /> <br />at these crossings have to be lowered. 'rhe first Creek has been chan- <br /> <br /> <br />neliled from Station 128+50 to O.Brian Canal at Station 216+40c The <br /> <br /> <br />chaneel has been designed to pass the lOa-year future flow. <br /> <br />lJ.J'~lwa~ <br /> <br />The U.S. Highway 85 at Station 1.\3+80 has a 5_0' x 6cO' CllC <br /> <br /> <br />This has to be dismantled. A new CllC to pass tile 100-year flow wiLhout <br /> <br /> <br />overlopping has been provided. The cl)lv(~rt ~il:l have four barrels each <br /> <br />13.0' wide x 9.0' high in size. The exi:;t.ing e:Levation of the roadway <br /> <br /> <br />will not be altered c Riprap protection ha:s to he provided both upsLream <br /> <br /> <br />and jownstream of the CBCc The telephone cable under the culvert has to <br /> <br /> <br />be r:-located. <br /> <br />Union Pacific Railroad <br /> <br />The Union Pacific Railroad aL :;L,tion 149+30 has a 3' x ;"8" <br /> <br />CBC. A new bridge with a single clear !i]Jan ct ~54.0' and with a 10.0' <br /> <br /> <br />dept:l of watelCway has heen provided to pass the 100-year How "ithout <br /> <br /> <br />overcoppingc At the downstream of the jJJ,idge invert a 2cO' drop has <br /> <br /> <br />been provided. Suitable rip rap protect'ofi 3re required both upstream <br /> <br />and downstream of the bridge as shownc <br /> <br />[I [_.,~ <br />