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Home My WebLink AboutWS2 - Dodge & Governer OneWay Item: WS-2 PRESENTATION TO FOLLOW: By: Jeff Held, Strand Associates � r A M�® "M CITY OF IOWA CITY 410 East Washington Strcct Iowa City. Iowa 52240- 1826 (319) 356-5000 (319) 356-5009 FAX www.icgov.org STRAND ASSOCIATES° Excellence in Engineering SM Key Topic's of Today's Discussion • Introduction and Project Background • Data Review • Jurisdictional Implications • Project Costs and Impacts • Questions 4` 11 -.1 d STRAND ��'��'�, ASSOCIATESCITY OF IOWA CITY 2022 AADT * A�•b''�°" Counts �; es ryuS w Introduction and Project Background • tl � Qa� i • Studying Dodge/Governor Two-way Conversion is in the City's Strategic Plan _ • Dodge/Governor are IA 1 and owned/maintained by Iowa DOT —� • Dodge Street reconstruction project needs to move into design = d �� a •=r�� -. soon for construction beginning in late 2026 .,m LEGEND • Existing one-way pair roadway layout ! -r• File` LLP. wnasoa — o Dodge St.— 2 travel lanes southbound with bike lane on right side o Governor St.— 2 travel lanes northbound with bike lane on right side • Typical reasons to convert to two-way operations o Volumes no longer suggest a one-way pair is needed = w W I 11•Mr o Reduce speeds/better environment for pedestrians and �, a �w°, - fl cyclists/decrease barrier effect } 8 o Improve safety fit �ft ix i�'yI'a I Buninglon 5[ I A� Y _ ♦e., o Spur economic development/redevelopment ` STRAND ASSOCIATESCITY OF IOWA CITY 2022 AADT Counts < �S` H � DP Data Review ,,,s • Traffic Volumes provided by Iowa DOT (I DOT) 2022 AADT o Dodge Street – 5,900 to 7,900 vehicles per day (vpd) ' ' .-u o Governor Street - 3,600 to 6,300 vpd —� ,wa 3Dw :L� —I Fnn w� LEGEND MMI IL�Vr� x�wmna -F moomwno.s ..ss� Tyro saw �wDTcoua 1 � 1 1 E ID�'wml TmD swD A lay' ani Il�Sr �l °N Bursvon5t I s�r•I•LJu,.l1j� E l'J STRAND ASSOCIATES° CITY OF IOWA CITY Estimated Two * Mace esvoro Way Traffic t�ys N F Two-Way Volumes s E r" • 80/20 Split o Dodge Street — 7,600 to 11 ,500 vpd ;;''` ' `"�N o Governor Street — 1 ,900 to 3000 vpd r ;, MOB 19pB • Volumes after conversion could require changes o Dodge Street — 2 Lane Road with center Two-Way-Left-Turn-Lane 6.T LEGEND MISxeYM o Governor Street —All signalized intersections could be replaced with Two-way or All-Way Stop Control — o Intersection of Dodge/Governor would need to be reconstructed - 1BBCB 2Ne . w�l I� L J S 4 fY.prk I ll1160 359U lJ �t a STRAND ASSOCIATES° CITY OF IOWA CITY Typical Section — Existing/Proposed One-Way R/W 80' TYPICAL R/W VARIES 57' - 80' Parkway 33' Parkway 6'-17' 8.5' IT13.5' 6'-17' 1' 10' VARIES 5' 3' ll'* 11'* VARIES 5' 1' SIDEWALK BIKE BIKE TRAVEL LANE TRAVEL LANE SIDEWALK Trees, LANE LANE Trees, SignsBUFFER, etc. Signs, etc. �1sz 1.5_� 41 �.4% 2% zz 2% 6" SIDEWALK 4"SIDEWALK ° ° n � 10"P.C.CONCRETE PAVEMENT LONGITUDINAL SUBDRAIN (TYPICAL) 6"MODIFIED SUBBASE �___ 12"CEMENT TREATED BASE STORM SEWER TYPI[LL tli055 SECTIW -OOOGE STAF£T *NOTE:THE USE OF 10'TRAVEL LANES FOR TRAFFIC CALMING AND A DESIGN EXCEPTION WITH IOWA DOT WILL BE EXPLORED IN FINAL DESIGN. STRAND ASSOCIATES° CITY OF IOWA CITY Typical Section — Two-Way with on-street bike lanes RAW 80' TYPICAL R/W VARIES 57' - BO' Parkway 33' Parkway 6'-17' 8.5' U, 13.5' 6'-17' 1' 10' VARIES 5' 3' ll'* 11'* VARIES 5' 1' SIDEWALK BIKEBIKE TRAVEL LANE TRAVEL LANE SIDEWALK Trees LANE LANE Trees BUFFER , Signs, etc. Signs, etc. �1sz 1.5_� 41 �.4% 2% zz 2% 6" SIDEWALK 4"SIDEWALK ° ° n � 10"P.C.CONCRETE PAVEMENT LONGITUDINAL SUBDRAIN (TYPICAL) 6"MODIFIED SUBBASE �___ 12"CEMENT TREATED BASE STORM SEWER TYPI[LL tli055 SECTIW -OOOGE STAF£T *NOTE:THE USE OF 10'TRAVEL LANES FOR TRAFFIC CALMING AND A DESIGN EXCEPTION WITH IOWA DOT WILL BE EXPLORED IN FINAL DESIGN. I —40-45 trees lost 53' (+20') N —40-45 trees lost 8.5' 11' 14' 11' 8.5' Bikes Travel Lane TWLTL Travel Lane Bikes STRAND ASSOCIATES° CITY OF IOWA CITY Typical Sections LEGEND Eaisling Onc _ Way Stolon MBka' „t Pin= 33—ft 53. T - Sg. Google Earth Pro Dodge Sheet south of Bloomington Sheet STRAND ASSOCIATES° CITY OF IOWA CITY Typical Sections LEGEND aye J En�ng One W.Y �m S ��Y Ra�wWay M ss8m wiBike .1 Pa1M1s Sourre:Google Earth Pro N I a3n 5"vn Dodge Street south of Ranalds Street STRAND ASSOCIATES° CITY OF IOWA CITY Speeds and the Pedestrian and Bike Environment • Speed feedback signs added at the bottom of the E Dodge Street hill near Brown Street o Anecdotally, these may have helped • Pedestrians o Sidewalks exist on both sides ' o High visibility crosswalks exist at higher volume intersections • Bicyclists c Buffered bike lane added in 2018 per the City and Dodge St and Church St Interseaion MPOJC Bike and Ped Plans as part of the Burlington Street and Governor Street Asphalt Resurfacing Project. Dodge St North of Brown St , f STRAND ASSOCIATES° CITY OF IOWA CITY Du Intersection bioEeMmoM crash Map ( 1s ry �� aol o'raviuea Safety: Crash Data shows an Average Crash History • MPOJC Urbanized Area Traffic Collision Analysis 2020-2022 o Ranks intersections and roadway lengths based on crash rate, severity, and total number of collisions o Total of 213 intersections and 77 roadway lengths ' `Iri,. • 14 Dodge and Governor intersections on the list - ArtnupL I LEGEND c Only 3 within top 60 (Labeled as Yellow box on map) • Neither Study Corridors made it into Midblock rankings &mmi�on S c Top 77 midblock locations identified B.H.Von St wWn�„ wwnnona • mlm.v a .� t ,RAND S a ASSOCIATES° CITY OF IOWA CITY Economic DevelopmenVRedevelopment • Literature review o Studies don't quantify amount/rate of development due to two-way conversion o Increases in economic development generally predicted due to better pedestrian and bicycle accommodations and more or better parking o Typically, conversions targeted in downtown areas where one-way pairs were implemented in the 1960s, and are no longer justified by traffic volumes • Dodge/Governor o Reasonable ped/bike accommodations exist, can be improved whether one-way or two-way is selected o Parking not planned to be added whether one-way or two-way on Dodge Street but parking could be added to Governor under two-way conversion. o Dodge/Governor are predominantly residential corridors, with limited businesses or commercial uses t _ M-11111 P!' r STRAND ASSOCIATES° CITY OFIOWA CITY md:me:eo�.i - *. Am.wsuwie Chan& a e (�es H Aw Jurisdictional Implications °°`_' ��„ur °cm 5/8/24 �A. • Currently, Iowa DOT owns and maintains both roadways c City maintained Governor Street up until 2007 - • If Two-Way Conversion takes place, Iowa DOT would transfer oneof the corridors (likely Governor Street / 1 .3 miles) back to Iowa Chlll5t City LEGEND o Transfer anticipated to be without any additional improvements ,c °, — °.w., o Iowa DOT resurfaced Governor Street in 2018, and thus it is considered „ oa,°ery ro by the DOT to be in a "state of good repair” °r°ss��t — c Iowa DOT would be taking on an additional lane on Dodge Street Two- - Way Left Turn Lane (TWLTL) 0 2 blocks of Burlington Street would also be transferred to Iowa City Rod « ° = •' R. (from Dodge Street to Governor Street) x � ' rrLg • Overall, Iowa DOT is not seeking out two-way conversion but is willing to work with Iowa City if conversion is desired rl, Burllg1on 51 � B+Qas7rt STRAND ASSOCIATESCITY OF IOWA CITY Project Costs and Impacts • The current Dodge Street functional design OPCC estimated a total cost of $17.6 million c Maintain One-Way, includes full reconstruction (pavement, utilities, etc.) c City cost share is $10.6 M (utility replacements, etc.) • If Two-Way Conversion takes place, additional City costs will be incurred , , o $3.0 M additional for: - Additional roadway width L - Signal upgrades on Dodge Street L - New Signs and Signal removals on Governor Street - Restriping of both streets o Ongoing maintenance for Governor Street - Plowing / Restriping / Street Sweeping / Street Repairs /Asphalt Overlay o $15 M to $20 M for a future Governor Street reconstruction with no Iowa DOT cost share o This represents 2 to 3 years of the City's annual budget for streets resurfacing/reconstruction _, STRAND ASSOCIATES° CITY OF IOWA CITY Dodge Street Reconstruction Schedule 024 0 : Preliminary e Final Design e Construction Primary Design e Easement Documents Construction Acquisition e Early Construction Two-Way Conversion likely adds: • Additional time for real estate acquisition and Iowa DOT coordination • Completion in 2029+ STRAND ASSOCIATES° CITY OF IOWA CITY Summary • Dodge Street and Governor Street could be converted to two-way operation • Typical goals for two-way conversion are perhaps less applicable to existing Dodge Street vs. other corridors that have been or are being considered for two-way conversion o Traffic volumes: Dodge/Governor traffic combined remains high enough that a center left-turn lane may be needed on Dodge Street (additional study needed to confirm). o Speeds: Two-way conversion would likely slow traffic. o Safety: Dodge Street does not have notable documented safety concerns per the most recent data. o Economic development/redevelopment: Difficult to say whether two-way conversion would meaningfully impact development/redevelopment • Added cost to the City to convert is about $3 M plus ongoing annual maintenance including future reconstruction of Governor Street ($15-$20 M) • Two-way conversion would delay the currently planned Dodge Street reconstruction project ft STRAND _-ZUF A5..0IAIEfi Cllr t,, ",\CII1' Recommendation • Overall recommendation is to keep Dodge Street and Governor Street as a One-Way Pair o Benefits of potential traffic calming due to two-way operation do not outweigh the increased reconstruction cost and the future maintenance costs o While Governor Street traffic would go down, Dodge Street traffic would increase by about 50% o No existing safety issues with the One-Way Pair configuration o Wider Dodge Street counter to goal of reducing barrier effect o There likely would be little to no economic benefit with Two-Way conversion o Two-Way conversion would have significant area impacts including loss of additional trees, and would require purchasing Right-of-Way which would delay the reconstruction project schedule STRAND ASSOCIATES° CITY OF IOWA CITY Questions and Answers t 4W Novo � C 1 I tI .w . "dL. STRAND ASSOCIATES° CITY OF IOWA CITY STRAND ASSOCIATES° Excellence in Engineering SM Typical Section — Two-Way without on-street bike lanes R/W 80' TYPICAL R/W VARIES 57' - 80' 33' 6'-17' 8.5' U, 13.5' 6'-17' 1' 10' VARIES 5' 3' ll'* 11'* VARIES 5' 1' SIDEWALK 4% BIKE BIKE TRAVEL LANE TRAVEL LANE SIDEWALK LANE LANE BUFFER LS_� `x 2'L 2% 6" SIDEWALK 4"SIDEWALK ° n 10"P.C.CONCRETE PAVEMENT LONGITUDINAL SUBDRAIN (TYPICAL) 6"MODIFIED SUBBASE __ 12"CEMENT TREATED BASE STORM SEWER TYPI[LL tli055 SECTIW -OOOGE STAF£T *NOTE:THE USE OF 10'TRAVEL LANES FOR TRAFFIC CALMING AND A DESIGN EXCEPTION WITH IOWA DOT WILL BE EXPLORED IN FINAL DESIGN. —8-10 trees lost 41' (+8')�= of —9-11 trees lost 13.5' 14' 13.5' Travel Lane TWLTL Travel Lane STRAND ASSOCIATES° CITY OF IOWA CITY STAFF PRESENTATION CONCLUDED 1r 1 CITY OF IOWA CITY 410 East Washington Strcct Iowa City. Iowa 52240- 1826 (319) 356-5000 (319) 356-5009 FAX www.icgov.org