GNRC Downtown Interstate Loop Concepts Update - August 25, 2021
Downtown Nashville Interstate Loop Concepts
GNRC.org/Transportation
Greater Nashville Regional Council
• Adopted by area mayors and transportation officials in Feb 2021 • Allocates all anticipated federal formula funds and state transportation dollars for region • Includes an analysis of existing infrastructure and forecasted conditions • Identifies strategies for addressing
road and bridge conditions, traffic congestion, roadway safety, freight movement, and active transportation options
GNRC.org/MidTNConnected
Study Purpose To help establish a long‐term vision for upgrading and modernizing the Interstate loop around downtown Nashville while identifying short‐term strategies for improving local access and traffic flow.
GNRC.org/Transportation
Funding Allocations, 2020 ‐ 2045
Downtown Interstate Loop ‐ Congestion
PLANNING GEOGRAPHY
GNRC.org/Transportation
MIDDLE TENNESSEE MAP
GNRC.org/Transportation
NASHVILLE TRANSPORTATION PLANNING AREA MAP
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NASHVILLE TRANSPORTATION PLANNING AREA MAP
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STUDY AREA MAP
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INNER LOOP MAP
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REGIONAL SIGNIFICANCE
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DOWNTOWN LOOP TRIP DESTINATIONS 2017
1,000+ trips per day
5 trips per day
GNRC.org/Transportation
DOWNTOWN LOOP TRIP
ROUTES 2017
65,000+ trips per day
500 trips per day
1,000+ trips per day
5 trips per day
GNRC.org/Transportation
HOME LOCATIONS OF DOWNTOWN WORKERS 2019
More
Less
GNRC.org/Transportation
ROADWAY CRASHES 2015 ‐ 19 AY SHES ‐
SolveThisTogether.org GNRC.org/ ransportation
MINORITY POPULATIONS 2019
5% to 25% 25% to 50% 50% or more
GNRC.org/Transportation
HOUSEHOLDS IN POVERTY 2019
5% to 25% 25% to 50% 50% or more
GNRC.org/Transportation
ESTABLISHING A SHARED VISION
GNRC.org/Transportation
BIG IDEAS FOR MAJOR UPGRADES
MORE CAPACITY SMARTER TECHNOLOGY BETTER MANAGEMENT
LESS DISRUPTION WIDER BENEFITS
GNRC.org/Transportation
BIG IDEAS FOR MAJOR UPGRADES
WIDER BENEFITS
BETTER ACCESS AND MOBILITY GREATER ECONOMIC
OPPORTUNITY COMMUNITY ENHANCEMENT
GNRC.org/Transportation
SCOPE AND APPROACH
STATUS QUO
CONCEPT #1
CONCEPT #2
CONCEPT #3
Consultant Team Driven Ideas
Prior Community Driven Ideas
Stakeholder and Planning Partner Ideas
GNRC.org/Transportation
SCOPE AND APPROACH
• Funding and Financing Options • Short‐Term Relief for Local Access and Circulation • Phased Implementation of Major Upgrades • Staged Construction to Minimize Disruption • Integrated Transit and Technology Options
PREFERRED CONCEPT
GNRC.org/Transportation
Project Timeline
OCT 2019
Solve this Together Transportation Summit Consultant Team Hired Kickoff Meeting with Metro Nashville Mayor’s Office and Depts Kickoff Meeting with Governor’s Office and TDOT Public Kickoff at Nashville Downtown Partnership Presentation to Transportation Policy Board (TPB) First Two Concepts Sent to TDOT and Metro for Review Regional Transportation Plan Adopted Microsimulation Phase Began Presentation of Preliminary Results to Study Partners Updates to TCC and TPB Findings and Feedback Documented, Task Order Complete
DEC 2019
JAN 2020 FEB 2020 MAR 2020 FEB 2021 APR 2021 AUG 2021 SEP 2021
GNRC.org/Transportation
GROWTH FORECASTS
GNRC.org/Transportation
POPULATION & JOBS DENSITY 2010
Pop: 1.49 million Jobs: 971k
3,000+ People/ Sq Mile 1,500 to 3,000 1,000 to 1,500 500 to 1,000 100 to 500 Less than 100
GNRC.org/Transportation
POPULATION & JOBS DENSITY 2020
Pop: 1.75 million Jobs: 1.31 million
3,000+ People/ Sq Mile 1,500 to 3,000 1,000 to 1,500 500 to 1,000 100 to 500 Less than 100
GNRC.org/Transportation
POPULATION & JOBS DENSITY 2045
Pop: 2.71 million Jobs: 1.91 million
3,000+ People/ Sq Mile 1,500 to 3,000 1,000 to 1,500 500 to 1,000 100 to 500 Less than 100
GNRC.org/Transportation
POPULATION & JOBS DENSITY 2010
3,000+ People/ Sq Mile 1,500 to 3,000 1,000 to 1,500 500 to 1,000 100 to 500 Less than 100
GNRC.org/Transportation
POPULATION & JOBS DENSITY 2045
3,000+ People/ Sq Mile 1,500 to 3,000 1,000 to 1,500 500 to 1,000 100 to 500 Less than 100
GNRC.org/Transportation
HIGH GROWTH AREAS 2010 ‐ 20
GNRC.org/Transportation
HIGH GROWTH AREAS 2020 ‐ 45
GNRC.org/Transportation
TRAFFIC FORECASTS
GNRC.org/Transportation
DAILY TRAFFIC CONGESTION 2020
41.5 mph
25% or less of free flow 25% to 50% 50% to 75% 75% or more
GNRC.org/Transportation
DAILY TRAFFIC CONGESTION 2025
40.1 mph
‐3%
25% or less of free flow 25% to 50% 50% to 75% 75% or more
GNRC.org/Transportation
DAILY TRAFFIC CONGESTION 2035
37.8 mph
‐9%
25% or less of free flow 25% to 50% 50% to 75% 75% or more
GNRC.org/Transportation
DAILY TRAFFIC CONGESTION 2045
35.7 mph
‐14%
25% or less of free flow 25% to 50% 50% to 75% 75% or more
GNRC.org/Transportation
DAILY TRAFFIC CONGESTION 2020
41.5 mph
25% or less of free flow 25% to 50% 50% to 75% 75% or more
GNRC.org/Transportation
DAILY TRAFFIC CONGESTION 2020
25% or less of free flow 25% to 50% 50% to 75% 75% or more
GNRC.org/Transportation
DAILY TRAFFIC CONGESTION 2025
25% or less of free flow 25% to 50% 50% to 75% 75% or more
GNRC.org/Transportation
DAILY TRAFFIC CONGESTION 2035
25% or less of free flow 25% to 50% 50% to 75% 75% or more
GNRC.org/Transportation
DAILY TRAFFIC CONGESTION 2045
25% or less of free flow 25% to 50% 50% to 75% 75% or more
GNRC.org/Transportation
DAILY TRAFFIC CONGESTION 2020
25% or less of free flow 25% to 50% 50% to 75% 75% or more
GNRC.org/Transportation
PLANNED IMPROVEMENTS
GNRC.org/Transportation
FUNDED PROJECTS
Funded Projects
INTERACT: GNRC.org/maps/2045RTP
GNRC.org/Transportation
FUNDED PROJECTS BY APPLICANT
TDOT Submitted Project Locally Submitted Project
*SR 386 and I‐24 SE Corridor Projects Jointly Submitted as Regional Priority
INTERACT: GNRC.org/maps/2045RTP
GNRC.org/Transportation
PROJECTS BY PLANNING HORIZON
INTERACT: GNRC.org/maps/2045RTP
GNRC.org/Transportation
DAILY TRAFFIC CONGESTION 2020
41.5 mph
25% or less of free flow 25% to 50% 50% to 75% 75% or more
GNRC.org/Transportation
DAILY TRAFFIC CONGESTION 2045
35.7 mph
‐14%
25% or less of free flow 25% to 50% 50% to 75% 75% or more
GNRC.org/Transportation
DAILY TRAFFIC CONGESTION 2045L
37.0 mph
‐11%
25% or less of free flow 25% to 50% 50% to 75% 75% or more
GNRC.org/Transportation
DAILY TRAFFIC CONGESTION 2020
32.3 mph
25% or less of free flow 25% to 50% 50% to 75% 75% or more
GNRC.org/Transportation
DAILY TRAFFIC CONGESTION 2045
29.4 mph
‐9%
25% or less of free flow 25% to 50% 50% to 75% 75% or more
GNRC.org/Transportation
DAILY TRAFFIC CONGESTION 2045L
27.9 mph
‐13%
25% or less of free flow 25% to 50% 50% to 75% 75% or more
GNRC.org/Transportation
PRELIMINARY ANALYSIS
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CONCEPT 1 Reconnected Grid and Consolidated Interchanges
GNRC.org/Transportation
CONCEPT #1 Reconnected Grid and Consolidated Interchanges
“INNER LOOP” CONCEPT 1
• Upgraded Surface Streets • Reconnected Grid Network • Consolidated Interchanges • Pre‐Loop Decision Points • Operational Improvements
GNRC.org/maps/loop1
GNRC.org/Transportation
CONCEPT #1 FLYOVER Reconnected Grid and Consolidated Interchanges
“INNER LOOP” CONCEPTS
Church
Broadway
McGavock
Demonbreun
GNRC.org/Transportation
CONCEPT #1 STATIONARY Reconnected Grid | BEFORE
Church
Broadway
McGavock
Demonbreun
CONCEPT #1 STATIONARY Reconnected Grid | AFTER
Church
Broadway
McGavock
Demonbreun
DAILY TRAFFIC CONGESTION 2020
32.3 mph
25% or less of free flow 25% to 50% 50% to 75% 75% or more
GNRC.org/Transportation
DAILY TRAFFIC CONGESTION 2045
29.4 mph
‐9%
25% or less of free flow 25% to 50% 50% to 75% 75% or more
GNRC.org/Transportation
DAILY TRAFFIC CONGESTION 2045L
27.9 mph
‐13%
25% or less of free flow 25% to 50% 50% to 75% 75% or more
GNRC.org/Transportation
DAILY TRAFFIC CONGESTION 2045C1
31.3 mph
‐3%
25% or less of free flow 25% to 50% 50% to 75% 75% or more
GNRC.org/Transportation
CONCEPT #1 | MORNING RUSH HOUR I‐65@440 to Five Points
“INNER LOOP” CONCEPT 1
• 32% average improvement in travel time • Savings range from 13% (7:00) to 47% (8:45)
GNRC.org/Transportation
CONCEPT #1 | MORNING RUSH HOUR I‐24@Harding Pl to State Capitol
“INNER LOOP” CONCEPT 1
• 19% average improvement in travel time • Savings range from ‐2% (7:00) to 34% (8:45)
GNRC.org/Transportation
CONCEPT #1 | EVENING RUSH HOUR Vanderbilt to Lower Broadway
“INNER LOOP” CONCEPT 1
• 25% average improvement in travel time • Savings range from ‐2% (4:00) to 44% (5:45)
GNRC.org/Transportation
“INNER LOOP” CONCEPTS STUDY
REMAINING TASKS
• Wrap Up Analysis of Concepts • Finalize Microsimulation Tool for Future Applications around the Region • Work with TDOT, Nashville, and Planning Partners to Determine Next Steps for Inner Loop Visioning
GNRC.org/Transportation
FIND MORE, INTERACT WITH DATA, AND STAY INVOLVED
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Explore on Your Own
SolveThisTogether.org
GNRC.org/Dashboards
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