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Hybrid 1A Qualitative Rating Sheet for Recommended Phasing Sequence Hybrid 1A will provide improvements (noted in the table below) to the baseline condition The baseline is the 2007 existing condition plus the improvements shown in gray in the concept sketch and noted below • I-580 Eastbound HOV Lane from Hacienda Dr to Greenville Rd. Isabel Ave (SR 84) widening to 4 lanes from Ruby Hil'. Dr to Pigeon Pass. • I-580 i Isabel Ave Interchange. I-680 Southbound HOV from SR 84 to SR 737 and • Isabel Ave ISR 84) witlernng to 6 lanes. and Intersection r sgnahzabon Improvements from I-580 to Ruby Hill Dr I-680 Northbound HOV from SR 237 to Alameda Creek Recommended Phasing Sequence Operational Score Ortlpr of Rcatliness Score (10 points total) Score Magnitude Free of Environ- Nezt Step Rank Component Description Sequence Consideration Basis for Score (H-M-L) Cost • 2006 S Funding PSR Obstacles mental (millions) Studies 580 WB HOV + HOT lane and ramp Extends HOV lane. Improves Project Report and 1 A metering mainline operation. Improves H $115 2 5 2 5 2 0 0 0 Environmental F of Greenville to W of Foothill - access for regional taps Document 580 WB auxiliary lane Improved ma.nhne operations ProjeU Report and 2 B First to Isabel Facilitates access to at Isabel. improvec mainline M S' 0 2 5 2 ,S 7 S 0 0 Environmental (struc!ure •.videning at creeks) SR 84 lh•oughpul. improved access Document to Isabel Avewe Improves mainline 3 C 680 ramp metering operations. should be Improves ma mine operations H Ss0 2 0 D 0 2 0 0 0 Project Study Reaort concurrent with or precede D & F 4 E 580 EB c'~imbing lane Shoultl precede K Increases capacdy antl auto Al S"20 - $165 2 5 0 0 2 5 0 0 Project Study Report speeds on grade Project Report antl 5 G 580 ; 680 Phase 1 Increases capacity, reduces tit $245 - $305 2.5 2.5 2.5 0.0 Environmental Interchange Improvements bottleneck on 58D Document 6 ~ 580 EB Phase 1 -Aux lanes Provitles added benefit for SR 84 improvements, Add mainline capacty R4 S65 0 0 0 0 2 S 0 0 Project Study Reaort Isabel to Fvst should precede M 8 F2 improves mainline operations SR 84 widening -Pigeon Pass to 680 SR 84 Widening from Improves access to local Project Slutly Report 7 A4 & F2 plus 680 SB aux lane from SR 84 to Pigeon Pass to 680 destinations. hinted benefits Ad 5190 0 0 D 0 t 0 0 0 with Cetatled tratt¢ Andrade plus 680 NB HOVE HOT Lane should precede F' to freeways studres from Alameda Creek to SR 84 8 F1 680 NB HOV !HOT !one Closes HOV gap, improves H 5105 2.0 0.0 1.5 0.0 Project Study Reaort SR 84 to Alcosta mainline operations Closes HOV gap sho;;Id 9 D 680 SB HOV i HOT lane Should precede H precede direct connector H 5175 20 0 0 0 0 0 0 Project Study Reaort Alcosta to SR 84 improves mainline operations Increases HOV connectivity Projecl Report and 10 H 580 ; 680 Phase 2 ~ increases capacity. removes H 5780 - 51.' 25 1.5 2.5 2.0 0.0 Environmental yy g to SB doect connector bottleneck on 580 Document 1'I K 580 EB -Phase 2 -Mixed-flow lanes Provides added benefit for Add mainline capacdy H 5155 0.0 0.0 1 5 0 0 Prged Study Resort Santa Rita to Vasco SR 84 imorovements improves mainline operations 580 EB HOV r HOT lane Extends HOV lane. improves 12 I mainline operation. Improves H 560 0.0 0.0 2.5 0.0 Project Study Report Foothnl to Hacenda access for regional trips Project Initiation ' L BART R~'W protection on 580 No Ireeway operations I S10G-175 0 5 0 0 2 5 0 0 Document (actual benerd m this time frame document type TBD) ' Implementation of BART RAW protecton is mtlependent of the other idenULed improvements 316+2007 GMIA asnalatan cnstc in 70715 is R1d5 d rcillinn far cmm~nnant< A ann R Hybrid Alternative 1A operations are acceptable throughout the I-580 and I-680 study limits with slightly higher speeds on I-580 and substantially higher speeds on southbound I-680 in the morning due to the extended auxiliary lane south of Route 84. On Route 84, operations are acceptable except for queuing at I-580 eastbound in the evening peak period (0.2-mile queue). The improved Route 84 is carrying only 500 to 800 vph more eastbound and no additional vehicles westbound due to the constraints of the ramp metering from Route 84 to southbound I-680. Route 84 would have to be improved to a freeway to have benefit comparable to improving the I-680/1-580 system interchange. The following are important linkages between projects: • The west auxiliary lanes from First Street to Isabel facilitate access to SR 84. • Route 84 widening should precede extending the NB I-680 HOV lane north of Route 84. The NB I-680 HOV Lane is needed maximize use of the additional capacity on eastbound Route 84. • This leads to splitting the NB I-680 HOV lane into two segments: from Alameda Creek to just past Route 84 and from Route 84 to Alcosta. • I-680 ramp metering should precede the HOV projects or be built with them to give HOVs priority and to improve operations when there is an incident. • The SB I-680 HOV lane should precede the I-680/1-580 system interchange improvements to give additional capacity on I-680. • The EB I-580 climbing lane should precede an EB mixed-flow lane to give sufficient capacity on the Altamont Grade. • An EB mixed-flow lane adds benefit to the Route 84 widening as well as improving I-580 operations. Metlian to median N 2dane direct wnneUOr Isabel Interchange ~ ` t HOV and 1 mixed-flow Westbound I-580 Westbound 6580 PfojeGt NM to Scele ^,~ lane, ramp meteretl y auxrhary lanes HOV or HOT lane _ ~Mi d' K o Q 1 >. rp V > d Pt~staB~^~ ~ DUBLIN a o ~ E //// ~ g ~ , ~ x ~ ~ Z ~///~ ~ Eastbound t1 ~ ~ t1 Q ~ y~ c climbing lane . ~ ~ .li ~ .... .... •p y/////////////N/// //H/// H/.V/ >• ~ + L ~~H. ///Hh• f61LAY///2///// f/~•H /NN//H/ // // N///////// .f// 9 =r 2 I o: o` ~° ~ y. ~ E Stoneritlge Dr i o ~ m o ~ Jack London Fw ~ v Eastbound t-58o r n ~ ~ t Blvd > O HOV 1 one Prgeci o ~ m U yy m _ Southbound I-680 1` in W Stan1ey Blvd LVERMORE Eastbountl I-580 m mixed-flow lane HOV or HOT lane antl 1 Easthountl 6560 Q ' ramp metering I ~ HOV or HOT lane ~ Rte 84 Widening Prolect8 Right of way v Poe ~~ `~ ~ pratedian for 00ma I PLEASANTON o RObyyr/rO/ BART extension a~g~~d' I I a Leyend gJ^ ~ Baseline Projects Completed Dy It ~ u _ ~ ~ a Vear 2030 Muddy I.68062te 1M ~~ lli1 o x)~ O Proposed Corndm Improvements interchange antl provide 'I`` 1 Q oYjA to ee StWied southbound auxiliary lane d jl dss to Antlrade Rd ~plna^ ~ Widen Rte 84 to Notes: 8odknecks and queues are shown for peak drtecbon5 only ~ ~~ 2-lanes in each direction AM peak tlirections are WB and SB. {~I . ~ I Norinbound b680 PM peak dvechons are NB and EB HOV or HOT Zane antl Ramp Metering Rates Southbound 1.880 ramp metering Local Service Interchanges 600 vph: ramp `y 1-680r1-6801nterchange 900 vpnnane HOV Lane Projecl 9a Alameda Cr Isabel Avenue Interchange 1700 vphtramp o+ 1-680rSR84 Interchange fS8 omrampl 1800 vphtramp ~ Modified o northbound 1-8150 HOV Lane ProjeU ® r CalaverasRoad Hybrid Alternative 1A TRIANGLE TRAFFIC STUDY Hybrid 1A -Phasing and Implementation Plan Agenda Item 4