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<br />Under this' plan. when Wi ice Jam fonns 1n the channel the overflow would be
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<br />oonfined to the che=.el defin;,d b;r the eet-back l...eee until the Jam is broken.
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<br />55. Recom,iended ,,~.~lmprov""ente un'der the recommended plan for
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<br />flood control for Fortification Creek at Craig ~u1d include levees and
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<br />eect1on8 of channel reotlflc~tlon as Shown in' the fo11owing table~
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<br />Levees and channel-recti'fioation sections. Fortification Creek at Cra.b:. Colo.'
<br />
<br />Item
<br />
<br />'Length
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<br />T9-. .
<br />
<br />From-III
<br />
<br />Feet
<br />R1ght-benk levee...... ..:. ' 6,100
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<br />Denver and Rio Grande
<br />Western Railroad~
<br />
<br />High bank near oanal
<br />diversion dam.
<br />High benk between 6th
<br />, and 7th St,r,eete.
<br />Denver and Rio Grande
<br />Western RaIlroad.
<br />Victo'7 WIl3' (Highwll3'
<br />US 40);
<br />Near 8th St.
<br />Near 10th St.
<br />Diversion dam.
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<br />Left-bank levee. '. . .... . ..~:
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<br />Channel reotifioat ion.'; "",
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<br />2.860
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<br />1. ..... ...do........ ......i
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<br />YBiDpa River.. .. .........1
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<br />"3,000
<br />1,700
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<br />Do..~.~~....~'.. .....1
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<br />Denver and Rio Grande
<br />Western Railroad.
<br />Near 6th St............:
<br />Near 9th St............:
<br />Near lOth St...........,
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<br />Do.... ~. .~ ......... &
<br />Do............ .... ..f
<br />Do. ~......... I.....:
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<br />1,220
<br />325
<br />725
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<br />· Refer to index map at end of report for location of places indicated.
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<br />Tho reoommended plan would aleo inolude replacement of (1) the existing
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<br />timber-girder rallroo.d bridge, which consists of three 13-foot epane eup.-
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<br />ported by t1mbo~pile bente, with a eteel-girder bridge (through-type) of
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<br />a 50-foot clear epan, and (2) the exieting etook bridge, whioh oonsiets of
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<br />a 3D-foot cle~r-span. s1ngle...truss timber structure su,pported on timber..
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<br />orib abutmente. with a t1mbo~pile bridge coneieting of a oenter epan of
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<br />30 feet and two end opane of 17 feet each. No other bridge alteratione
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<br />would be neceeear,y. OnlY mi~or utility relocations would be required.
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<br />56; The leveee and reotified ohannel, which would extend from tho
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<br />diversion dam to the railroad. would con.trol. the standard project flood'
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<br />(2,600 oubio feet'per second at Highway U S 40) with a freeboard allowance
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<br />of 2 feet. The ohannel improvem.nt, extending from the railroad to ,Yempa
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<br />River,. would oontrol the etandard proJeot ,flood with no fr.eboard allo'Nanoe.,
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<br />Th. two bridge. alBO weld be deeigned to pae. 2.600 oub1a',fe.t per eeoond.
<br />
<br />23
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