|
<br />v]jj.lO
<br />
<br />I
<br />I
<br />
<br />ra."'01"_"O'~U,
<br />
<br />I
<br />
<br />60'_'"
<br />
<br />y..,t,-.,'~..
<br />
<br />_."",. "L.O", T'.'<^,
<br />"..,....""[...EO'O
<br />
<br />Brid~e Improvements at Ford Street and ~aShington Avenue
<br />As stated ~drli~r. the Ford $tre~t and Wa,hington AyMUe bridges control th~
<br />deptn of flooding in d large portion of ReaCh 1. For this reason improvem~nt
<br />Qftheflood ,onveyan,e capacity at these two bridges is essential for re-
<br />duct ion of flood damages in Re~Ch 1.
<br />
<br />'.HloA.~.r'.,,"
<br />
<br />""Q'~OL."<","N'C ~,TO<
<br />co..,,'" '<NOL. '~."..O<E
<br />~P."" rLO" O. o',.ox,
<br />100-'0000"
<br />
<br />
<br />O"T"_IO'~A'
<br />
<br />1
<br />
<br />.....,....".,~".."T<N.,.O.T"A"
<br />
<br />,..,
<br />
<br />-
<br />
<br />,...'
<br />
<br />Figure 0'111-2 shows the most economica I imilrovO'ITlent schem~s for tne Ford
<br />Str~et ~no l<Iasnington Avenue bridge,. rhe ex ist ing bridge acutments are
<br />stru<.:turallysound at oothlo<.:ations, so it wa,determineatn<ltmodifiCdtion
<br />of these aOcltment<;. re~l<lcement Df the exist ing brid~e de<.:~, an~ <laD it ion of
<br />a se<.:ond I}ridge or <.:ulvert structur<< woula b" less expens i~e than remo~ing
<br />the Dridges and abutments amI constructing ent irely new brio~es. TM~ new
<br />oridgedeCK structures would De precast concrete con,truction pr oviding both
<br />dreducea surface area normal to tMe flow and a ,mootM Mj':Iraulic section
<br />underneath. In add it ion tMe new Dridge decks O'/Oulo De set at an e le~at ion 2
<br />f~et above tMe lOO-year des ign water ,urfac~, thus providing a factor of
<br />saf;:>tyforpotentidlueurisblockage. fheexistingroadwayimmediatelynorth
<br />and south of each briage would be raiSed to me"t the new bridge elevations.
<br />
<br />GRASS LINED CHANNEL
<br />
<br />O~PrH_IO' MA>
<br />
<br />
<br />f
<br />
<br />.c<;KR,....OU,"N'. _
<br />.C"O.O'NOTCCH"'Nt'----
<br />"~~"TY."t ,"C.YlI
<br />"NO.~',"" ,,"H"'L.
<br />"""0'<
<br />
<br />
<br />TOP'NIOTO<-'",,'MA'
<br />
<br />~'_.'L"DE'cO'E'TYe".L.
<br />
<br />--
<br />
<br />"AlN.<<"N'" ~.o'~
<br />
<br />ROCK LINED CHANNEL
<br />
<br />At Foro Street d second ;~-toot br ioge s tructyre is requ; red, wn i 1 e at
<br />l<Iash ington Avenue a trip Ie 10-f oot wi d~ DY S-foot hi 9h bOx CU~ vert i s neces~
<br />sary to sup~lement the existing hringe capacity.
<br />
<br />,
<br />
<br />rR,"~'RO_"~lN _
<br />
<br />I
<br />'"If
<br />
<br />Selected Structural lmpro~ements
<br />Tnese improvements are tnose wh iCh n~ve been ident if ied as neceSSilr y for the
<br />reduction of dilmage, dna/or to provide tM proper tranSition from the 1m-
<br />proved cMnnel to the existing channel. A description of tllese improvements
<br />follows:
<br />
<br />t
<br />
<br />_ ._T~eN'OT".,"'~.'-
<br />
<br />r
<br />OE?To<"o'~"1
<br />
<br />,
<br />
<br />1. At the ~ater freatment Plilnt ilred Just downstredln of U.S. 6, tne exist ing
<br />Dermfortllerawwilterpondswouldha"etobee.<tenaeoandraisedtvPre-
<br />vent the 100-ye<lr flow from overtopping ano bypassing the chdnnel im.
<br />
<br />"[..N'O".O
<br />.,--.o;'C.WAlLS
<br />
<br />,
<br />
<br />
<br />,
<br />,
<br />
<br />,
<br />
<br />, ...
<br />
<br />~rovements downHream.
<br />
<br />rhi <; oerm,lOula also re~u ire r i~rap protect ion
<br />
<br />".~'.~Ol' <",'"N<.
<br />,n.'O"
<br />
<br />"
<br />
<br />..,or,N'"O."0 L.
<br />
<br />agdinst nlgh veloCi ty fl~....
<br />
<br />STRUCTURAL WALLED CHANNEL
<br />
<br />CLEAR CREEK-YOUNGFIELD THROUGH GOLDEN
<br />CHANNEL ALTERNATIVES
<br />
<br />FIGURE ::iZlIT-l
<br />
|