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Home My WebLink AboutGilbert Street Study pptGilbert Street Transportation Study MAY 291 2018 _mfr. ,S CITY OF IOWA CITY Presentation Format • Timeline & Purpose of Study • Overview of Study Area • Overview of Facility Types Reviewed • Study Findings • Staff Recommendation CITY OF IOWA CITY Timeline & Purpose of Study • Initiated Fall 2017 by City Council as a result of the Bicycle Master Plan - Contract with Alta Planning + Design • Purpose to determine available alternatives within the Gilbert Street corridor to allow for improved traffic operations and safety for all modes of travel •Includes review of existing studies and encompasses the corridor between McCollister Blvd & Market Street • Study includes: ✓An existing conditions assessment ✓Stakeholder engagement ✓Development of 3 conceptual designs o Development of 1 functional design for the preferred alternative I? CITY OF IOWA CITY r t• Y " � Jim'! � o a � .. fit Overview of Study Area EXISTING CONDITIONS • Major arterial corridor • High collision corridor • Poor access control • Corridor with distinct sections • Large student population on north end of corridor FUTURE TRANSITIONS • Vibrant commercial area • More residential growth with development in Riverfront Crossing district • Anticipated growth in traditional neighborhoods at south end of corridor • More recreational uses along corridor CITY OF IOWA CITY Study Area — 3 Sections lot _ Z ..ti 4"I E I I Q � IT F I IF M 0 V- AL =1, ry w u, ., "r. Study Area —Section 1 m r n q :, I S �� D I CrJ" Q II ti d — � c , fpm 31 j ) r �+ 'A f� Section 1 — Market Street to Prentiss Street • Residential/Commercial land - use mix • Good street connectivity • Good access control • ADT = 9,500 — 12,000 • Width = 45' • Minimal pedestrian barriers • Poor bicycle accommodations • Large bike/ped generators • Limited development potential • 2015-2017- 132 vehicle & 14 bike/ped collisions Study Area — Section 2 Section 2 — Prentiss Street to Hwy 6 • Primarily Commercial land - uses • Poor street connectivity • Poor access control • ADT = 13,500 — 17,000 • Width = 45' • Frequent pedestrian barriers • Poor bicycle accommodations • Large bike/ped generators • High development potential • 2015-2017- 108 vehicle & 3 bike/ped collisions Study Area — Section 3 mFM: z � m - r m r 1� rr m t Y a n o ^r� 1 n n aIE�I ' a L3 i m ' Section 3 — Hwy 6 to McCollister Blvd • Primarily Commercial / Public land - uses • Poor street connectivity • Poor access control • ADT = 6,500 — 12,500 • Width = 49' • Frequent pedestrian barriers • Poor bicycle accommodations • Large bike/ped generators • High development potential • 2015-2017- 44 vehicle & 1 bike/ped collision r Existing Conditions Assessment Existing Conditions Assessment d� AIM ° v ,,,,_�y� i 'L 8m° •ova ®aB �e v ° °q0 ° 6 °° o m v ° °.a w ; r: FZFza<s:FrPSGrev Cn<n ° hlomr`hM1ide Unry iert Street Corridor - Highway to Market Street >°I-R,I-dC <1 < .n°,_:" o 500 1.000 Feet (9 p 1: , z.aoa Gilbert Street Corridor - McCollister Blvd to Highway 6 0 """ °„"= p<°"" e,�M1,i.q<„<, i�,.,M1 0 500 1,000 —1Fe 2,000 Facility Types Reviewed • Alternative #1- Conventional bike lanes • Alternative #2 - Cycle Track • Alternative #3 - Shared Path CITY OF IOWA CITY VAN DUREN W CanventSt,.tWee Jones !b[entiml loading lone p. m Cycle nock oth Mn to sharedusepoth through O O Glt(,h,reet op Non ❑ (short [erm'I Z Aak= consbained width � —Aft AIIIIIIIII, \ MAAIDEIDE N z �• r Z w w p O Ftotemiol badingzone Y _ w 4 FO (7 n n LINN�`"....t�. u C7 O Z .„F y 0F O 0116NONE O Two-on,treet wa AKirkwaod ZO tt F ¢ m_ cycle tre dvenueoption N a � Cr J I - Emiing CLINTON po 'Shorl[erm un111 weaning lakes place en Gllhetl repim KVkrvooa LO Hwy 6_ SANT Cyde track tmaeHbn to WATERFRONT ,flared use path of Nwy6 Mid bbtk W crossing wfth h MWKSIgnai ---\A, 2 61 a y Gilbert Street Complete Street Corridor Study Concept Alternatives Map Concept Alternatives ----- - All ernati ve e-. Convenllonal Bike Lanes Potential Loading Zone Location Alk or- L B1 t rnalr - Track t3A iG Ib Strcrt Enhanced Pedesttian Crossing o,cs All,-1, ll Car4B Sl rash on [.'dc of Pedestrian Priority Zone Giber Street I ' alta CITY Of IOR'1GTY Alternative #1 - Conventional Bike Lanes Advantages • Benefits of a Road diet • Low cost - $236,246 • Ease of implementation • Provides on -street accommodation • No sharing of space with pedestrians • No street width constraints Disadvantages • No physical separation from vehicles • Not comfortable for all bicyclists ,cIk 1 e,6 y evik rYariaa 5.5 ft 011 iIIN ON S.SN SaewYf. SN 610 h Alternative #2 - Cycle Track Advantages • Benefits of a Road diet • Provides on -street accommodation • No sharing of space with pedestrians • Physical separation from vehicles • Comfortable for most bicyclists Disadvantages • Moderate cost - $1,050,124 • Difficult to implement • Safety concerns with contraflow movement Will not work in constrained sections t m� rt ftlzting Tlee Laws SIaIM Cn'iPLdIIP TUTIMi¢ ffIMLMP X64 ft BI�101i ShW91k )N bh GII M1MX tlN IN 1011 J-'011 .��k Alternative #3 - Shared Path Advantages • Benefits of a Road diet • Physical separation from vehicles • Comfortable for most bicyclists Disadvantages • High cost - $2,873,945 • Difficult to implement • Safety concerns with contraflow movement • No on -street accommodation • Shared space with pedestrians • Will not work in constrained sections rx li - - I" oIua en Inn, a Onbefnnn Shwid-r Tran Lawn sn r I r , , , 1 11 12 ft MMh 12 f 9X 49% 10f J -.dA IbeJway Vanes Bain 44 57 a Study Findings • Study suggests that a road -diet would generally improve the corridor providing better accommodation for bicyclists and pedestrians, and would improve safety for motorists. •Recommends that a road -diet be implemented in the near term throughout the corridor with the addition of bike lanes • Road diet works well in the long-term between McCollister Blvd and Hwy 6 (with buffered bike lanes). • Road diet works well in the long-term between Kirkwood Avenue and Market Street (with conventional bike lanes) • A sensitivity analysis indicates that a road diet may fail as soon as 2022 between Highway 6 and Kirkwood Avenue (with conventional bike lanes) • Recommends that a cycle track or parking protected bike lanes be added with a future reconstruction of the section between Highway 6 and Kirkwood Avenue • Notes that the Iowa River Trail can be used as an alternative route during the interim period if desired Staff Recommendations • Staff recommends moving forward with a functional design and implementation of a road -diet with bikes lanes in the near-term from McCollister Blvd to Hwy 6 & Kirkwood to Market • Staff recommends waiting to implement a road -diet with bike lanes between Hwy 6 and Kirkwood until this section is reconstructed per the Riverfront Crossings Plan • A sensitivity analysis performed shows that level -of -service in this section begins to fail as soon as 2022 • Staff has worked with property owners to dedicate right-of-way between Hwy 6 and Kirkwood Avenue for future reconstruction including bicycle accommodations but cannot predict when additional right- of-way will be available • In the interim period bicyclists can continue to ride on street OR use the adjacent Iowa River Trail to avoid this section of the corridor • Staff will ask the consultant to provide accommodation for bicyclists wanting to use the Iowa River Trail in the functional design CITY OF IOWA CITY Next Steps • Council to provide staff with direction on how to move forward with the functional design • Staff to move forward with implementation in 2020 (CIP project 53827) $300,000 budgeted • Staff to continue to work with property owners to dedicate right-of-way between Hwy 6 and Kirkwood Avenue for future reconstruction including bicycle accommodations CITY OF IOWA CITY Questions? I� •®'°� CITY OF IOWA CITY