Sellwood Bridge AM Traffic Evaluation

Transcription

1 Sellwd Bridge AM Traffic Evaluatin SMILE Transprtatin Cmmittee Meeting Prtland Bureau f Transprtatin Jamie Jeffrey, Rich Newlands, Jake Milligan

2 Gals and Objectives Understand and reduce the impacts f cut thrugh traffic. Preserve pedestrian and bicycle safety acrss Tacma and within the neighbrhd.

3 Infrmatin Cllected Data Cllectin Daily Traffic Vlumes n majr streets and lcal streets Turning Mvement Cunts at Tacma/13 th and Tacma/17 th Vide Data 6 th, 13 Umatilla, and 13 Nehalem Field bservatins travel patterns, travel time New cameras installed in Octber at bth ends f the bridge allw: Mnitring f traffic cnditins Ability t bserve affect f signal timing changes

4 Pssible Cntributing Factrs AM Queue Spillback due t: Hwy 43/Macadam signal 6 th & Tacma signal Stp and g cnditins Side street traffic allwed t enter Tacma Neighbrhd cut thrugh due t: Reduced ttal travel time Waze/Ggle Maps

5 Pssible Optins

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7 Optins A thru D Signal Timing Adjustments West End f Bridge West End Interchange Signal Timing adjustments balance mvements fr mst efficient traffic flw.

8 Optin E Cnvert Bridge t Reversible Travel Lanes Lin s Head Bridge, Vancuver, WA Recnfiguring lanes n the bridge t prvide mre strage space acrss the bridge, and allw capacity t be adjusted with directinal demand. This will invlve multiple agency cnsensus. Significant amunt f evaluatin required.

9 Optins F thru K SE 6 th & Tacma Signal Operatins Mdificatins t signal include: Signal timing adjustments t favr pedestrian/bicycle safety Restrictin f certain mvements during the AM Peak Replacement f traffic signal with Pedestrian Hybrid Beacn

10 Optins G Replace SE 6 th & Tacma Signal Pedestrian Hybrid Beacn Example (SE Tacma & 19 th Ave)

11 Optins L, N, O Access Restrictins (Diversin) Treatments that eliminate r redirect traffic Medians n Tacma reduce turning mvement use f left turn lane Diverters and Turn Restrictin signing restrict traffic mvements with the gal f reducing traffic vlumes Time Limited Turn Restrictins

12 Diverter Examples Permanent

13 Diverter Examples Temprary r Test

14 Optin M Meter Traffic Flw n 17 th Ave SE 17 th /Ochc Treatment Ptential t reduce amunt f utside cmmute traffic entering neighbrhd frm suth n 17 th. Bnus pprtunity t imprve Springwater Trail crssing safety. Significant evaluatin required. Ptential fr unacceptable unintended cnsequences.

15 280 SE 17 th Ave Suth f Ochc A primary bridge feeder Apprximately 1/3 f the AM westbund bridge traffic SE Tacma St SE 17 th Ave

16 N SE 8 TH AVE

17 Optin P Imprve Umatilla as a Greenway Umatilla Bikeway Imprve bikeway cnditins n Umatilla t greenway standards: Speed bumps 20 mph speed limit Sharrw pavement markings Diversin? Destinatin A Destinatin B Destinatin C Variatin Install speed bumps thrughut the neighbrhd

18 Optin Q 6 th Ave Diverter, Suth f Tacma SE 6 th between SE Tenin & Tacma Treatment t restrict NB t bike nly Eliminates illegal left turns at 6 th /Tacma signal. Reduces cut thrugh traffic attractin t the 6 th / Tacma signal

19 Summary Tier One Tier Tw Tier Three Tier Fur Simple Lw Cst Feasibility Issues Additinal Prcess Medium Cst Feasibility Issues Additinal Prcess High Cst Nt Recmmended Optins: B: West signal timing C: West signal timing D: West signal timing F: 6 th signal timing H: 6 th signal timing I: 6 th signal timing K: 6 th signal timing Optins: G: HAWK signal J: 6 th signal timing M: Diversin P: Umatilla Greenway Q: 6 th Ave diverter Optins: E: Reversible lanes N: 17 th Ave diverter L: Tacma medians Optins: A: Bus stp relcate O: 17 th turn restrict

20 Next Steps

21 Questins?