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Home My WebLink AboutGateway ppt• a Council Work Session #4 Council Work Session 4 Tonight's Objectives • Review activities since the January work session • Discuss the design elements of the project • Develop the design elements as they will be presented on the Project Concept Statement for submittal to Iowa DOT Council Work Session 4 Agenda: • Recent public involvement activities • Design concept and elements • Design concept construction impacts and FAQ � Public Involvement Recent stakeholder engagement with: ■ Bella Vista • Individual property owners • Civic organizations • Hancher /Mayflower teams • Technical Advisory Committee � Public Involvement Pre - Design Open House: • Held February 25th at Public Library • More than 100 attendees • Displayed the Design Concept with Council parameters • Formal presentation and informal discussions � Public Involvement Pre - Design Open House — Key Takeaways: • Aesthetics — maintain views of the river, park and trees • Sidewalks along entire east side of Dubuque • Pedestrian crossings are important to provide • Speed limit — evenly split between current and all 25 mph • Dubuque and Park turn lanes important • Keep construction as short as possible Transportation Modes and � Enhancements ■ Pedestrian • Sidewalk on east side to facilitate movement between locations on east side and to provide routes to signalized crossings • All sidewalks will be brought up to ADA standards • Grade separated crossing of Park Road • Protected sidewalks on Park Road Bridge ■ Bicycle • Bike trail built to full ASHTO standards along west side of Dubuque Street • Grade separated crossing of Park Road for River Corridor Trail ■ Transit — Improved geometry for bus movements ■ Vehicular —Reduce delay at the Dubuque Street Park Road intersection ■ All Modes • Improved flood protection • Everything brought up to new condition Design Concept Discussion • Design parameters and elements • Cross section primer • Design concept discussion • Features • Renderings • Cross sections �- No 8 GUTTER 3mim_. MULT143M PATH I EXISTING GROUND ` / Wp MEDIAN MEDIAN � � Functions of Curb and Gutter Stormwater conveyance C TOLGA AKMEN'LNP Snow storage intrusion t r Park Road Looking East IOWA CITY 4TEWAY uesian concent FOCUS Arev Dubuque at Foster Road ■ Urban section, no median ■ 35 mph speed limit ■ Path /sidewalk both sides ■ Reduced footprint IOWA CITY 4TEWAY Dubuque Street 2-50 IF, — Recommendation Dubuque near Foster • Maintain multi -use path /sidewalk on both sides 10- foot /6 -foot • Maintain current 35 mph speed limit • 12 -foot lanes / 1.5 -foot curb and gutter • Transitions from using no median to having a median Dubuque near Taft Speedway ■ Median transition ■ 35 mph speed limit ■ Realigned Taft intersection ■ Path /sidewalk both sides of Dubuque • Reduced footprint • Reduced wall heights • Changes to park impacts IOWA CITY 4TEWAY t. 1310 llt* w TI MSECTION EXHIBIT I XS•l DR. HH & SYLVILLA JACOBSEN HOUSE 52-05067 - 1016 N OUBUOUE STREET CROSS SECTION 6 PLAN VIEW Recommendation Dubuque near Taft Speedway • Maintain multi -use path and sidewalk on both sides 10'/6' • Maintain current 35 mph speed limit • 12 -foot lanes / 1.5 -foot curb and gutter • Keep urban section transition with and without median Dubuque near Ridge Road ■ Urban with median used • 35 mph speed limit • Relocated Ridge intersection • Reduction in footprint • Changes to park impacts • Still allows Cambus turnaround ., W I� .s ,1c 700 AM 670 _ NEPA Preferred Concept Current Concept 660 � k' 640 700 680 640 Dubuque Street 6 +oo 0 15 30 so' Recommendation Dubuque near Ridge Road • Keep Cambus turnaround • Maintain multi -use path /sidewalk on both sides 10- foot /6 -foot • Maintain current 35 mph speed limit • 12 -foot lanes and 1.5 -foot curb and gutter Dubuque near Mayflower ■ Transition zone • Urban sections include varied median • Speed limit 35 mph ■ Multi -use path and sidewalks i IFf Ar ,.,z; I , I a i 714411 I . ri 05 0 Dubuque Street is +oo 0 15 so so, Sidewalk /Trail Continuity Y ; - r t •�M1 Ems' ,PL '43 1" r .� Recommendations Dubuque Mayflower to north of Kimball • Maintain current Cambus operations • Maintain multi -use paths on both sides • Southbound side use 10 foot path throughout corridor • Northbound side use 8 -foot paths transition to 6 -foot north of Mayflower • Un- signalized crosswalk at Mayflower • Maintain current 35 mph speed limit • 51 -foot curb to curb without median / median varies Kimball to Park ■ Lower elevation based on design parameters • Retaining wall along southbound • Urban section • Speed limit 25 south of Kimball ■ Multi -use path and sidewalks ■ Reduced footprint along northbound lanes Kimball to Park WO F ? A �•1 r-i I IL. 1 MM CROSS SECTION i1 D Y. •D A ti. •n I M I Preliminary - SL to Cha N. X.SECTION EXHIBIT I XS-3 w 12 SEL" VISTA BROWN STREET HISTORIC DISTRICT CROSS SECTION a PLAN VIEW 710 710 690 r NEPA Preferred Concept 670 ---.„ Current Concept 660 640 690 640 Dubuque Street 37 +50 0 15 30 60' Recommendation Dubuque from Kimball to Park ■ 12 -foot lanes • 1.5 -foot curb and gutter both sides • 51 -foot from back of curb to back of curb • Use 8 -foot parkway both sides • Southbound side use 10 foot multi -use path • Northbound side use 8 -foot sidewalks Park /Dubuque Intersection • Urban section applied • Includes Dubuque right turn lane • Park Road Bridge 5 lanes • Speed limit 25 mph south of Kimball • Lower elevation — now 100 +1' ■ Retaining wall along southbound ■ Multi -use path and sidewalks ■ Smaller footprint along northbound lanes Ike IOWA CITY 4TEWAY C Ti 71 min IMre • IOWA CITY 4TEWAY Dubuque Ric s f"rr- iM�. 710 710 690 r NEPA Preferred Concept 670 ---.„ Current Concept 660 640 690 640 Dubuque Street 37 +50 0 15 30 60' 710 700 690 660 670 660 650 640 710 700 6 -Zl1 F r NEPA Preferred Concept 680 Current Concept Y —Ai 670 660 640 Dubuque Street 41 +50 0 15 30 60' Traffic Operations Dubuque /Park Intersection Is the Southbound right turn lane needed? • Southbound causes delays in the morning peak hour • LOS F today and in 2040 for southbound and intersection • Without right turn lane • Southbound LOS F today and in 2040 — Four minute delays • Intersection LOS F today and in 2040 —Two and a half minute delays ■ With 275 -foot right turn lane • Southbound LOS C today and in 2040 — Delays less than 25 seconds • Intersection LOS B today and in 2040— Delays less than 20 seconds Traffic Operations Dubuque /Park Intersection How many lanes does eastbound Park Road need? • Two lanes eastbound today • Eastbound movement causes delay • Current intersection LOS E today / LOS F in 2040 • Two eastbound lane scenario: • Intersection improves— LOS C today/ LOSE in 2040 • Eastbound movement poor— LOSE today/ LOS Fin 2040 ■ Three eastbound lane scenario • Intersection improves— LOS B today/ LOS C in 2040 • Eastbound improves— LOS C today/ LOS Din 2040 Traffic Operations Dubuque /Park Intersection How many westbound lanes should Park Road have? • Two lanes there today • Considered scenario with one westbound lane and two • No capacity issues for westbound lanes • Cambus stop on bridge • Driver safety consideration • Two lanes provides capacity for events and incident management Iow1 CITY Recommendation GATEWAY Dubuque Street at Park Road: • 12 -foot lanes • 1.5 -foot curb and gutter both sides • 51 -foot from back of curb to back of curb • Use 8 -foot parkway / 10 foot multi -use path / 8 -foot sidewalks • Add right turn lane to southbound • Improve level of service • Turn lane does not shift roadway to the east • Considerable expense to add at a later date ■ Maintain the existing lane configuration northbound Iow1 CITY Park • • i • • GATEWAY Partial Through Arch bridge Five lane bridge 3 lanes eastbound 2 west Multiple bike /ped crossings Trail underpass on west side 25 mph IOWA CITY 4TEWAY 1110 • T - m �WW ip I, ELEVATION 9i' -0 Recommendation Park Road Bridge ■ Five 12 -foot lanes on bridge • Eastbound — dual left turn lanes and one right turn lane • Westbound— two lanes • Warranted by existing traffic • Arch bridge cannot be widened at a later date • Allows Cambus to operate as it does today • Provides capacity for events and incident management IOWA CITY - GATEWAY 700 u:. 660 640 Park Road 6 +00 C w • . • K►IV[M Nei is NEPA Preferred C I r Current Concept •[I 0 15 30 60' Park Road 16 +00 0 15 30 60' Iow1 CITY Recommendation GATEWAY ■ On Park Road from bridge to Lower City Park • Sidewalks transition for 10 -foot at bridge to 8 or 6 -foot • Five 12 -foot lanes drop outside lanes at Lower City Park ■ From Lower City Park to Riverside • Three lane section —12 -foot center turn lane / 11 -foot travel lanes • Use 1.5 -foot curb and gutter • Sidewalks — 8 -foot along eastbound lanes / 6 -foot along westbound • Benefits event traffic at Hancher and City Park • Benefits daily traffic including new Hancher loading docks Iow1 CITY Next Steps GATEWAY • Complete conceptual design phase • Submit Concept Statement to DOT • Subject to DOT approval • Develop aesthetics and landscape concepts • Begin preliminary and final design • Continued stakeholder coordination