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<br />9TH STREET TO BROADWAY <br /> <br />BROADWAY TO ARAPAHOE <br /> <br />Alternatives Considered <br /> <br />Alternatives Considered <br /> <br />Total flow through Library pedestrian bridge <br />Extending excavation south of Library to include alley <br />Lowering Mall area and parking lot <br />Constructing freeboard wall <br />Diversion structure alternatives <br /> <br />Hard 1 ine channel <br />Stream reshaping to allow pond on or off main channel <br />Lower irrigation canal <br />Allow 1 imited flood flow to use Boulder/White Rock Canal <br />Mod i f i cat ions to south side (Yokums) <br /> <br />Leave as is <br />Downstream with inflatable dam <br />*Upstream of 9th <br />Purchase irrigation rights <br /> <br />Existing alley maintained <br />South entrance modifications <br />Column reinforcement <br />Column removal and footbridge modification <br />North bank excavation <br /> <br />Lengthen Broadway Bridge by means of an additional 47 <br />feet span to the north and provide a facade to match the <br />architecture of the existing bridge <br />*Removal of diversion dam and headgate <br />*New irrigation conduit <br />*Acquire Smith/Goss irrigation ditch <br />*Lengthen Arapahoe Bridge and scour protection and acquire <br />Pizza Factory <br />2 Span 1 L!O I <br />60' to the west <br />*Central Park modifications <br /> <br />*Library modifications <br /> <br />*Relocate Fire Department Administration Building <br /> <br />Park area north of canal <br /> <br />*Lower Employee parking lot <br /> <br />(I) Relocate train <br />(2) Remaining portion untouched <br /> <br />Parking lot access <br />Island mounding <br />Diversion structure <br />Floodway excavation - no bank <br />Planter wall along south Mall sidewalk <br />No change to Mall area <br /> <br />Terraced excavation <br /> <br />(1) Wa 11 <br />(2) Ramps <br />(3) Replanting areas <br /> <br />*Parking lot plantings <br />*Hike/bike path both sides <br />,"Laminated wood foot bridge <br />*Island mounding - 125 total trees - 76 saved <br />"PI anter wa II <br />*Pedestrian access (ramps and stairs) <br /> <br />Remove existing channel wall northeast side <br />Yokum's Restaurant untouched <br /> <br />*Terracing and walls to save trees - 35 total trees -23 saved. <br />White Oak and Maple transplant <br />Stream channel treatment and replanting <br />South side natural istic treatment <br />Access considerations <br /> <br />*Oenotes selected alternative <br /> <br />Ramps <br />Hike/bike paths <br /> <br />*Denotes selected alternative <br /> <br />46 <br />