BROADWAY/CONGRESS CONVERSION

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BROADWAY/CONGRESS CONVERSION

• January 18, 2007

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Planned Downtown AreaTransportation Projects

• I-10 Widening
• Streetcar
• Fourth Avenue Underpass
• Clark Street Bridge

• Downtown Links
• Speedway at RR Widening
• 22nd Street to 6 lanes

• Broadway Blvd to 6 2 lanes
• Projected Two-way Conversions

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Selected DevelopmentProjects in Downtown Area

• Presidio Terrace 80,000 SF
• City/County Courts 400,000 SF
• MLK Block 100,000 SF
• Santa Rita 220,000 SF
• Post 80,000 SF
• Plaza Centro 80,000 SF
• Mercado District 400,000 SF

Total SF 5,256,109 Total Daily Vehicle Trips
52,000
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Traffic Modeling Scenarios

• One Two-Way Operation on Broadway/Congress
• Two-Way Operation on Stone and 6th
• 2006 2016 Traffic Volumes
• 22nd Street Downtown Links Diversion
• (40 EB / 60 WB)

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Existing One-way Network
Stone Ave. 6th Ave. Alameda St. Pennington
St. Broadway Blvd. Congress St.
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Recommendation
Convert to two-way where feasible

• Stone Avenue
• 6th Avenue
• Alameda Street
• Pennington Street

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Basis for Recommendation

• Traffic Operations
• Safety
• Roadway Configuration
• Air Quality
• Timing of Transportation Projects
• Cost

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Traffic Operations

• Increases in Pedestrian Crossing Time
• Event Access Issues
• Increases in Delay and Congestion
• Regional Trends Downtown

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2006 Volumes with Diversion to Downtown Links and
22nd St

• Avg. Vehicle Delay On Broadway/Congress
• One-way 7 min
• Two-way 11.5 min 64
• EB Travel Time on Broadway/Congress
• One-way 9 min
• Two-way 13 min 44

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2016 Volumes with Diversion to Downtown Links and
22nd St

• Avg. Vehicle Delay On Broadway/Congress
• One-way 22 min
• Two-way 27.5 min 25
• EB Travel Time on Broadway/Congress
• One-way 18 min
• Two-way 27 min 50

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Safety

• Vehicular conflicts
• Pedestrian conflicts
• Accident rates
• Emergency Vehicle Access

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Roadway Configuration

• Angled on street parking
• Parallel parking one-way vs. two-way
• Sidewalks
• Streetcar (will work either way)

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Roadway Configuration for Two-Way
-10
-11
-6
-8
-3
-5
-8
-10
-4
-9
-21
-5
-10
-6
-2
Total Parking Loss 118
2-Way Congress 3 lanes 2-Way Broadway 4-5 lanes
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Air Quality

• Emissions Increase with 2 way on Broadway and
  Congress
• Along Broadway/Congress
• 28
• Downtown
• 14

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Elements of Two-way Conversion

• Traffic Signals and Lighting
• Geometric Issues
• Access
• Cost