central texas ih 35 widening project - texas a&m university · pdf filecentral texas ih 35...
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Central Texas IH 35 Widening Project Short Course, October 2011
Greg A. Malatek, P.E.
Deputy District Engineer
Austin District
Robert E. Brydia
Research Scientist
Texas Transportation Inst.
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More than 30 million travelers per year pass through this corridor – about 100,000 people a day.
Estimates suggest that 60% or more
of those driving the corridor
reside elsewhere.
IH 35 Main Street Texas Expansion
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Section 1A
From Williamson County line to South FM 2268
6.02 miles
Construction is complete
Section 6B
From SH 22 to East/West split
2.22 miles
Construction is complete
Section 6A
From FM 310 to SH 22
4.68 miles
Construction is complete
Completed Construction
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Section 3C
From FM 2063 to South Loop 340
3.41 miles
Construction ends Spring 2011
Under Construction
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Section 5C
From FM 1304 to FM 310
5.46 miles
Bid Amount: $36.8 million
Construction Ends: Fall 2012
Under Construction
Section 3C
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Under Construction
Section 3C
Section 1C
From FM 2484 to US 190 in Belton
8.0 miles
Bid Amount: $106.8 million
Construction Ends: Fall 2014
Section 5C
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Section 1C
Section 5A
From North Loop 340 to FM 1858
13.37 miles
Bid Amount: $166.8 million
Construction Ends: Fall 2014
Under Construction
Section 3C Section 3C
Section 5C
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Under Construction Section 1C
Section 3C
Section 5C
Section 5B
From FM 1858 to FM 1304
8.0 miles
Bid Amount: $100.9 million
Construction ends: Fall 2014
Section 5A
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Section 3A(1)
From North Loop 363 to North Troy City Limits
6.38 miles
Construction Costs: $123.6 million
Construction Ends: Spring 2016
Funded PS&E
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Section 5A
Funded PS&E
Section 3A(1)
Section 3A(2)
From North Troy City Limits to Woodlawn Road
9.59 miles
Construction Costs: $120.7 million
Construction Ends: Spring 2016
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Section 5A
Funded PS&E
Section 3A(1)
Section 3A(2)
Section 1B
From FM 2268 to North FM 2484 in Salado
3.41 miles
Construction Costs: $70.4 million
Construction Ends: Spring 2015
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Section 5A
Funded PS&E
Section 3A(1)
Section 3A(2)
Section 1B
Section 3B
From Woodlawn Road to FM 2063
6.23 miles
Construction Cost: $190 million
Construction Ends: Spring 2016
Section 3B
Brazos River frontage road bridges
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Section 2B
From South Loop 363 to North Loop 363 in Temple
5.85 miles
Construction Costs: $200 million
Construction Funding Source: Prop 12 V2
ROW Costs: $110 million
Funded PS&E
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Section 4
From South Loop 340 to North Loop 340 in Waco
7.90 miles
Construction Cost: $312.9 million
Construction Funding Source: Unfunded
ROW Costs: $45.1 million (Unfunded)
Unfunded PS&E
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Section 5B Hillsboro Area Office
Section 3B Waco Area Office
Section 1B Georgetown AO
Section 3A(2) Belton Area Office
Section 3A(1) Belton Area Office
Section 5A Waco Area Office
Section 5C Hillsboro Area Office
Section 1C Georgetown Area Office
Section 3C Waco Area Office
Section 6 Hillsboro Area Office
Responsible Area Offices For Construction
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TxDOT Requested TTI Assistance
Mobility Coordination
Traveler Information During Construction (TIDC)
Long Term Corridor Plan
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Challenge the size of Texas
Over the next decade, I-35 will be the scene of $1.9 billion in construction.
Every construction delay along
that route has the potential
to impact someone in your district.
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Miles Under Construction
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I-35 Construction Policy
I-35 lane closures limited to evenings
No holiday lane closures Contractors fined for peak
hour lane closures Incentives for completing
construction ahead of schedule
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Public Expectations
• Tell us what you plan to do, and do what you say
• Finish as quickly as possible • If lanes must be closed, make
sure there’s actual construction activity going on
• Minimize the impact of those closures
• Provide information about alternate routes
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Challenge the size of Texas
I-35 crosses 7 TxDOT districts
It impacts every TxDOT district
As many as 8 projects active at a single time
~ 66% through traffic
> 75% trucks at night
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I35TIDC - Vision
• Provide traveler information on current and projected travel conditions across multiple construction zones – Local
– Regional
– Corridor-wide
• Construction impact focused
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I35TIDC Goals - Travelers
• Provide advance notification of planned lane closures and their anticipated impacts
• Provide real-time corridor condition information – Travel time – Delays – Queues
• Provide travelers with predicted delays for construction closures
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I35TIDC Goals – Waco Operations
• Support / Supported by TxDOT Waco District ITS development
• Integrate with LoneStar where possible
• Provide video snapshots of traffic conditions from select locations within the corridor
• Support dissemination of incident information
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Phase 1 of I35TIDC Deployment
• Receive scheduled lane closure information • Assess. If significant impacts:
– Alert project engineers – Deploy short-term lane closure monitoring and
queue warning system • Monitor and disseminate travel times along
corridor • Disseminate anticipated daily delays and 7-day
outlook via internet • DECEMBER 2011
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Phase 2 of I35TIDC Deployment
• Disseminate predicted lane closure delays based on current real-time information
• Support dissemination of incident related information by TxDOT
• Expand to multi-faceted information dissemination strategy (en-route, pre-trip, targeted audiences, personal devices, etc)
• Performance monitoring and reports • MAY 2012
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I35TIDC System
• Multiple components to overall traveler information system – Obtain information on planned closures – Assess potential impacts – Deploy short-term WZ monitoring – Travel time monitoring – Predicted closure impacts – Information dissemination – Performance metrics
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Systems Engineering View
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Lane Closure Assessment
• Identify those lane closures that will likely create queues and delays
• Predict queue lengths and duration
• Predict travel time delays
• Identify appropriate lane closure monitoring plan to implement (if any)
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Lane Closure Predicted Impacts
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Lane Closure Monitoring
• Detect when queues have developed and approximate length
• Provide real-time warning that traffic is slowed or stopped ahead
• Deployed as needed via an on-call
• Communicate with PCMS upstream to post warning messages when appropriate
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Message Selection Logic
LANE CLOSED AHEAD
63 mph 67 mph 66 mph 65 mph
Speed Sensors
TRAFFIC SLOWS 3 MILES
42 mph 64 mph 62 mph 56 mph
3 miles
STOPPED TRAFFIC 2 MILES
25 mph 64 mph 52 mph 31 mph
2 miles
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Travel Time Monitoring
• Display current corridor travel times to travelers
• Can be combined with other data for predictions
• Based on BT sensor deployment
• Display travel time information via PCMS
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Travel Time Monitoring
• Bluetooth-based probe travel times
• Segment travel times • Pilot deployments
– 10 – 40 mile lengths – >3000 matches per day
• Ultimately 25-30 BT sensors to be deployed on I-35 in sections under construction
• Potential additional coverage on alternate routes
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Lane Closure Impact Prediction
• Travelers need to know expected impacts (not current impacts) of lane-closure when they will be at lane-closure
• Develop system of providing expected impacts of ongoing lane closures based on current travel conditions
• Disseminate impacts: – far enough upstream to influence traveler decisions
– at key decision points upstream of lane closure
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Traveler Information - Corridor
• PCMS – Integrated into LoneStar
– Travel time messages
– Support incident information
• Construction delay signs – Additional delay due to construction
– Human factors study of multiple sign concept
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Traveler Information - Internet
• My35 website links / integration – Lane closure locations and predicted impacts – Corridor travel times – Corridor speed map
• Social media • TxDOT Dissemination
– HCRS – Camera snapshots – Incident information
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My35.org
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Push to Social Media
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Public Outreach Tools
• Public meetings & hearings
• I-35 newsletter
• Email updates
• News releases
• Business community meetings
• 80 outreach efforts
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Phase 1 Status
• Complete – Systems engineering – Concept development – Pilot deployments to test concepts
• In progress – Full-scale equipment procurement – Identification of deployment locations – Deployment – Software development – LoneStar integration
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Questions?