New Stanton Project Update July 3, 2012

Transcription

1 New Stanton Project Update July 3, 2012

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3 The Needs BACKGROUND INFO I-70 Geometric Concerns Substandard Horizontal & Vertical Clearance at Center Ave. Bridge (The Center Avenue Bridge is Replaced in all Concepts studied.) Substandard Typical Section Median Width & Shoulder Width Substandard Acceleration & Deceleration Lane Lengths Substandard Interchange Spacing

4 Existing DEFICIENCY AREAS >>> OVERALL VIEW

5 Existing DEFICIENCY LOCATIONS Insufficient Weave Lengths Between New Stanton & PA Turnpike Ramps Due To Close Interchange Spacing Insufficient Accel Lane Length From PA Turnpike Insufficient Decel Lane Length To PA Turnpike

6 Existing DEFICIENCY LOCATIONS Both Ramps Have Substandard Radii Insufficient Accel Lane Length From New Stanton Interchange Existing Structure: Deficient Horizontal & Vertical Clearances Insufficient Decel Lane Length To New Stanton Interchange Insufficient Accel Lane Length From New Stanton Interchange

7 Existing DEFICIENCY LOCATIONS Insufficient Auxiliary Lane Length Skew Angle for Hunker Bridge Insufficient Decel Lane Length To SR 3089 Insufficient Auxiliary Lane Length Insufficient Accel Lane Length From SR 3089 Insufficient Decel Lane Length To New Stanton Interchange

8 Existing DEFICIENCY LOCATIONS Existing I-70 Typical Section Is Substandard

9 The Needs BACKGROUND INFO Crash Rates (5-Year Period from ) Center Avenue (between Post Ave. & Byers Ave.) is more than 6x the statewide average. The EB I-70 crash rate in the Hunker-New Stanton weave area is more than 13x the statewide average. The EB I-70 crash rate in the New Stanton On-ramp merge area is more than 5x the statewide average. Poor Intersection Visibility - I-70 Ramps at Center Avenue Eastbound Off-Ramp (looking left) = 340 available Westbound Off-Ramp (looking left)= 320 available Required Sight Distance for 30 MPH to turn left = 335 (car) 510 (truck)

10 The Needs BACKGROUND INFO Center Avenue Existing Delays (Levels of Service) At Post Ave 11.0 sec (LOS B) At Pennsylvania Ave 46.8 sec (LOS E) At I-70 EB Ramps 40.4 sec (LOS E) At I-70 WB Ramps 24.8 sec (LOS C) At Byers Ave 17.8 sec (LOS C) At Westmore Ave 1.3 sec (LOS A) At Highland Ave 0.8 sec (LOS A) At Bair Blvd 1.2 sec (LOS A) Center Avenue No Pedestrian Connectivity Across SR 0070 High Truck Volume Desire for Town Center Concept Center Avenue Length of Traffic Back-ups (Queuing) See Figure (next slide)

11 2037 No-Build TRAFFIC SIMULATION

12 The Needs TRAFFIC BACK-UP LENGTHS

13 2037 No-Build BACKUPS (QUEUING)

14 Proposed CONCEPTS Concepts to the West WHY? Safety and Mobility of Travelling Public on I-70 and the Local Network Efficient Movement of People and Traffic Decrease Center Avenue Truck Traffic Provide a Safe Pedestrian Facility along Center Avenue Bridge Deficiencies (All Concepts Replace Center Avenue Bridge) Ramps Affected Decreased Residential and Business Displacements FHWA & State Requirements (Concepts #3 thru #5)

15 Proposed CONCEPT #1

16 Proposed CONCEPT #2

17 Proposed CONCEPTS Concepts #1 & #2 - Reasons for Dismissal No Improvement to Safety and Mobility No Improvement on Efficiently Moving Traffic Truck Traffic not Decreased on Center Avenue Closely Spaced Interchanges Remain Entrance and Exit Ramp Lengths Too Short Federal and State Requirements were not Satisfied

18 Proposed CONCEPT #3

19 Proposed CONCEPTS Concept #3 - Reasons for Dismissal Traffic Delays and Back-ups with tying to Byers Avenue Adverse and Unsafe Back-ups on WB Off-Ramp that Spill onto I-70 Mainline Creates a Safety and Mobility Concern

20 Proposed CONCEPT #5

21 Proposed CONCEPTS Concept #5 - Reasons for Dismissal Truck Traffic Increased on Center Avenue, Bair Boulevard, and Pennsylvania Avenue Pedestrian Safety not Greatly Improved Doesn t Provide Detour when Center Ave. Bridge is Replaced Greatest Impact to Businesses and Residences

22 Proposed NO BUILD CONDITIONS Center Avenue Intersection Delays (Levels of Service) CENTER AVENUE INTERSECTIONS Existing 2037 No-Build DELAY LOS DELAY LOS At Post Avenue 11.0 B 14.8 B At Pennsylvania Avenue 46.8 E 1 min sec F At I-70 EB Ramps 40.4 E 3 min 34.3 sec F At I-70 WB Ramps 24.8 C 48.7 D At Byers Avenue 17.8 C 25.7 D At Westmore Avenue 1.3 A 1.3 A At Highland Avenue 0.8 A 0.7 A At Bair Boulevard 1.2 A 1.2 A Center Avenue Length of Traffic Back-ups (Queuing) See Figure (next slide)

23 2037 No-Build BACKUPS (QUEUING)

24 Proposed BENEFITS OF CONCEPT #4 Concepts to the West WHY? Safety within the Entire Corridor is Improved Decreases Residential and Business Displacements Mobility within the Entire Corridor is Improved 1. Ramps are of Sufficient Length 2. Interchanges are Properly Spaced 3. Provides for Efficient Movement of Traffic throughout the Network 4. Decreased Emergency Response Times by Reduced Congestion 5. Provides a Safe Pedestrian Facility along Center Avenue Replaces the Deficient Center Avenue Bridge Enhances and Allows for Growth of Future Economic Development FHWA & State Requirements are Satisfied

25 Proposed CONCEPT #4

26 Proposed CONCEPT 4 VARIATIONS Proposed Traffic Mitigation Considered Signalization Single Point Urban Interchange Roundabouts (Safety & Maintenance) Combination of Both Signals and Roundabouts

27 Proposed CONCEPT 4-1

28 Proposed CONCEPT 4-2

29 Proposed CONCEPT 4-3

30 Proposed CONCEPT 4-4

31 Proposed CONCEPT 4-5

32 Proposed CONCEPT >>> OVERALL

33 Proposed CONCEPTS

34 Proposed CONCEPTS B B

35 Proposed CONCEPTS

36 Proposed CONCEPTS

37 Proposed CONCEPTS C C

38 Proposed CONCEPTS

39 Proposed Public Involvement Meetings Held to Date : Public Officials Briefing : : : : : Local Business Coordination Public Plans Display Business Coordination Business Coordination Business Coordination

40 Proposed Public Involvement Inclusions Considered thru Public Involvement Process Reconstruction of Pennsylvania Avenue Realignment of Bair Blvd. Opposite Highland Avenue Potential Inclusion of Sewickley Creek Bridge Potential Rachel Road Connection Potential Wayfinding Sign Opportunities (see next slide) During Construction After Construction

41 Proposed OPPORTUNITIES FOR PROJECT FIT Participation Gateway to New Stanton Approach-Way Trail Blazer Signs Aesthetics Adopt-a-Highway Program See website: Eligible Logo Types (different requirements for each) Gas Food Lodging Camping Attractions

42 Proposed OPPORTUNITIES FOR PROJECT FIT Getting the Word Out During Construction

43 2037 No-Build DAILY TRAFFIC VOLUMES

44 2037 Proposed DAILY TRAFFIC VOLUMES

45 2037 Proposed VEHICLES PER DAY TRAFFIC COMPARISON Center Avenue Intersection Daily Traffic Comparison With Pennsylvania Avenue = 15,700 (no-build) vs. 19,400 (build) = +24% With Byers Avenue = 21,700 (no-build) vs. 15,200 (build) = -30% With Bair Boulevard = 11,500 (no-build) vs. 23,000 (build) = +100%

46 2037 Proposed TRAFFIC SIMULATION

47 2037 Proposed COMPARISON New Stanton Interchange - Distance and Time Comparison Business Current Distance Proposed Distance Distance Difference Time Difference (10 MPH) Miles Miles Miles Minutes Eastbound Westbound Eastbound Westbound Eastbound Westbound Eastbound Westbound TJ's Sheetz McDonald's Days Inn

48 GET INVOLVED & STAY INVOLVED Visit for More Info

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