Study Purpose Update the Arterial Grid Analysis Phase I study - PowerPoint PPT Presentation

Study Purpose • Update the Arterial Grid Analysis – Phase I study results (2006) • Evaluate the operation of arterial grid roadway system in Miami-Dade County – Develop a consolidated database of traffic counts and estimate level of service – Develop roadway characteristics maps – Identify ways to improve capacity and efficiency of roadway network 2

Grid Road System - Benefits • Choice • Economic activity • Redundancy • Smart growth • Safety • Healthy communities 3

Key Findings • A decreasing trend of traffic volume between 2004/05 and 2011/12 • Traffic volume decreased in 68% of roadway segments evaluated • Net change of Average Daily Traffic at 1040 roadway segments is (-)1.94 million vehicles • Consistent with national Gr e e n – volume de c r e ase d trends Re d – volume inc r e ase d 4

Key Findings • Level of service deficiencies • 35% of arterial segments and 7% of collector segments operate at LOS F • Fewer deficient corridors compared to 2004/05 • Connectivity improvements to collector roadways may help relieve adjacent failing arterials LOS F Roadway Segments b s by F Functional C Classi ssification F unc tional Class % L OS F Se gme nts % L OS F Se gme nts (2004/ 05 data) (2011/ 12 data) Co lle c to rs 17% 7% Arte ria ls 42% 35% 5

Key Findings • Level of service deficiencies • A higher proportion of deficient corridors are located south of Flagler Street LOS Summary b by % % C Centerline e Miles es North/ South County C or D E F T otal Distribution be tte r No rth o f F la g le r St 52% 24% 6% 18% 100% So uth o f F la g le r St 44% 26% 6% 24% 100% T o ta l 48% 25% 6% 21% 100% 6

Improve ovement St Strategie ies Se e Handout • Improvements within Priority Corridors (Type 1 projects) – Roadway widening – Arterial grade separation – Interchanges at expressways – Intersection improvements • Grid Network Connectivity (Type 2 projects) – At expressways – At canals – Other locations 7

Priority Corridor (Type 1) Projects Road F r om T o Impr ove me nt Cate gor y SW 42 Stre e t HE F T SW 137 Ave nue Wide n to 6 la ne s Wide ning SW 152 Stre e t SW 117 Ave nue US 1 Wide n to 6 la ne s Wide ning Gra de se pa ra te E -W Arte ria l g ra de SW 8 Stre e t SW 107 Ave nue thro ug h la ne s se pa ra tio n Gra de se pa ra te E -W Arte ria l g ra de SW 8 Stre e t SW 137 Ave nue thro ug h la ne s se pa ra tio n Gra de se pa ra te E -W Arte ria l g ra de NW 36 Stre e t NW 72 Ave nue thro ug h la ne s se pa ra tio n SW 56 Stre e t Ho me ste a d E xte nsio n o f F lo rida ’ s o r SW 72 Pa rtia l inte rc ha ng e I nte rc ha ng e s T urnpike Stre e t SW 72 Stre e t SR 874 (Do n Shula E xpre sswa y) Pa rtia l inte rc ha ng e I nte rc ha ng e s I nte rse c tio n SW 72 Stre e t SW 107 Ave nue I ndire c t le ft turns impro ve me nts Co ntinuo us flo w (turb o ) SW 117 SW 128 Stre e t, SW 134 Stre e t, a nd I nte rse c tio n la ne s – so uthb o und SW Ave nue SW 136 Stre e t impro ve me nts 117 Ave nue 8

Priority Corridor (Type 1) Projects Benefits of Recommendations Wide deni ning ng Would add 4.5 centerline miles (9 lane miles). • Capacity of each widened segment would increase by 20,000 vehicles per day (at • LOS D). Arter erial G Grade S de Sepa paration Would benefit approximately 315,000 vehicles per day through reduced conflicts • and delay. (315,000 is the total ADT at the above three intersections). Int ntercha hang nges Potential redistribution of traffic from SW 40 Street and SW 88 Street between SR • 826 and HEFT. Relieve interchanges at HEFT and SW 40 Street, HEFT and SW 88 Street, SR 874 and • SW 88 Street, and SW 72 Street and SR 826. Inter ersec section I n Impr provem emen ents Reduction of overall peak period delay • 9

Example – Type 1 Project Partial Interchange - SW 72 Street and SR 874 10

Arterial Grid Network (Type 2) Projects Road F r om T o Impr ove me nt Cate gor y Bridg e o ve r C-100A SW 77 Ave nue SW 159 T e rra c e SW 160 T e rra c e Missing link a t c a na l fe e de r c a na l SW 77 Ave nue SW 173 Stre e t SW 174 Stre e t Bridg e o ve r C-100 c a na l Missing link a t c a na l SW 87 Ave nue SW 163 T e rra c e SW 164 Stre e t Bridg e o ve r C-100 c a na l Missing link a t c a na l SW 102 SW 145 Stre e t SW 146 Stre e t Bridg e o ve r C-100 c a na l Missing link a t c a na l Ave nue SW 122 Bridg e o ve r Bla c k Cre e k SW 210 Stre e t SW 212 Stre e t Missing link a t c a na l Ave nue c a na l Bridg e o ve r C-100C SW 120 Stre e t SW 99 Co urt SW 99 Ave nue Missing link a t c a na l c a na l SW 136 Stre e t Ha rriso n Stre e t SW 112 Ave nue Bridg e o ve r C-100 c a na l Missing link a t c a na l NE 215 Stre e t NE 14 Ave nue I -95 Co nstruc t 2 la ne fa c ility Othe r missing links SW 120 Stre e t SW 82 Ro a d US 1 Co nstruc t 2 la ne fa c ility Othe r missing links SW 127 So uth o f SW 224 W Dixie Co nstruc t 2 la ne fa c ility Othe r missing links Ave nue Stre e t Hig hwa y Missing link a t SW 16 Stre e t SR 826 (Pa lme tto E xpre sswa y) Co nne c t SW 16 Stre e t e xpre sswa y Missing link a t SW 120 Stre e t SR 874 (Do n Shula E xpre sswa y) Co nne c t SW 120 Stre e t e xpre sswa y 11

Arterial Grid Network (Type 2) Projects Benefits of Recommendations Missi sing L Link nks s at Cana nals Improve continuity of the section-line and half section-line street network in • South Miami-Dade County Missi sing L Link nks s at E Expr press essways SW 16 Street to serve as a secondary E-W street and relieve SW 8 Street • Establish SW 120 Street as a continuous section-line road in south Miami-Dade • County by completing missing segments Other er M Missi sing L Link nks Improve continuity of County Line Road • Improve continuity of section-line street network in South Miami-Dade County • Al All P Proje jects Provide opportunities for multimodal connections • 12

Example – Type 2 Project Missing Link - SW 120 Street at US 1 SW 120 Street 13

Next Steps • Finalize the report • Consider incorporating the recommended improvements into the planning and prioritization processes 14