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<br />East l04th Avenue <br /> <br />The East l04th Avenue at Staticnj)3+90 at present has no cul- <br /> <br /> <br />vert at the point where the proposed First (~reek channel crosses the <br /> <br /> <br />road\/ay. A new bridge has been provided uncler the roadway to pass the <br /> <br /> <br />lOO-~rear flow without overtoppingc ThiC I,nclge ",ill have two spans of <br /> <br />36.0' each wit.h a height of 8.0'. Ripra~ rl~olection is provided on the <br /> <br /> <br />bed to protect the bridge foundationsc <br /> <br />l,,-~~.':state Hi~~ 76 <br /> <br />The highway at Station 171+40 ha" five CMP's of varying sizes <br /> <br /> <br />whictl have to be dismantled. To pass thE 1()O-year flow without over- <br /> <br /> <br />topping the highway, a new box culvert bridge has been provided. This <br /> <br />will consist of four barrels each 14cO' , ]0.0' _ Suitable upstream and <br /> <br /> <br />down~;tream transitions have been provided al_ong with rip rap as shown in <br /> <br />the drawing. The upstream bed in a length of l]O feet has been steepen- <br />ed and provided with riprap c <br /> <br />In te r ~ ta te Highway ~Lt-,)..Q'}l_Ei"-fl_~an~Ll_ c)~ r_a~"J,Il.8.s~~J7,I~~(I__.h3 <br /> <br />In this reach the Fir.t Creek has. wlde flood plainc The creek <br /> <br /> <br />will be channelized to carry the 100-year fL()~ a. shown in the drawingsc <br /> <br /> <br />First Creek in this reach is crossed by Havana Street at Station 187+80, <br /> <br /> <br />the Burlington Ditch at Station 203+40 and the O'Brian Canal at Station <br /> <br /> <br />2l6+40c New structures are needed at these locationsc <br /> <br />Havana St reel. <br /> <br />The Havana Street. crossiIlg h;lS no ogerlings under the roadway <br /> <br /> <br />at pl"esent. It is propose(1 to provide a hri_dge at the crossing to pass <br /> <br /> <br />lhe ],DO-year f'low without overtopping. ~rhp bridge will have two spans <br /> <br /> <br />each of 35.0' with a depth of 8.5!. 'flIP roadway will not be raised. In <br /> <br /> <br />orde!' to keep the invert of the bridge at [,I, 5,086cO, the upstream bed <br /> <br />of the channel will be steepened for a length DE ]]0 feet and provided <br /> <br /> <br />with a 1.5' drop as shown in the drawing. for obtaining proper flow <br /> <br /> <br />condi lions upstream and dOvlIlstream trans i ti ems ]];:tve been provided. <br /> <br />II [-5 <br />