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TPP Planning Conference – June 4-5, 2014
ROADWAY INVENTORY The biggest and badest
TPP Planning Conference – June 4-5, 2014
Thanks in Advance for your Attention
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THE CONFERENCE
TPP Planning Conference – June 4-5, 2014
Presentation Overview – Roadway Inventory
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• Purpose
• Extent
• Structure
• Content
• Maintenance
• Use
• Availability
• Challenges and Moving Forward
TPP Planning Conference – June 4-5, 2014
Purpose – Not just because FHWA says we have to
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Database of all public roadway mileage
• Planning tool for:
• seeding the annual HPMS submittal
• quantifying roadway assets
• allocating resources
• monitoring trends
TPP Planning Conference – June 4-5, 2014
Extent - Just How Big?
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TPP Planning Conference – June 4-5, 2014
Extent - Just How Big?
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TPP Planning Conference – June 4-5, 2014
Extent - Just How Big?
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State Public Road
Mileage
1. Texas 313,210
2. California 175,499
…
36. Utah 45,891
37. New Jersey 39,272
38. West Virginia 38,684
39. Nevada 38,567
40. Massachusetts 36,330
41. Maryland 32,372
42. Wyoming 28,416
43. Maine 22,871
44. Connecticut 21,431
45. Alaska 16,301
46. New Hampshire 16,105
47. Vermont 14,291
48. Rhode Island 6,480
49. Delaware 6,377
50. Hawaii 4,416 Source: HM10, 2012 data
TPP Planning Conference – June 4-5, 2014
Roadway Inventory
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TPP Planning Conference – June 4-5, 2014
Roadway Inventory Structure
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On-System
Mainlanes
Frontage Roads
Supplemental MLs
Supplemental FRs
Grade Sep. Connectors
Off-System
County Roads
FC City Streets
Local City Streets
Other
On-System
Connectors
Ramps
Turnarounds
Other
Tabular & GIS GIS only
TPP Planning Conference – June 4-5, 2014
Route Classifications
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RtClass Miles
On-System 104,000
TPP Planning Conference – June 4-5, 2014
Structure - Route Classifications
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RtClass Miles
On-System 104,000
County Roads 147,000
TPP Planning Conference – June 4-5, 2014
Structure - Route Classifications
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RtClass Miles
On-System 104,000
County Roads 147,000
FC City Streets 14,000
TPP Planning Conference – June 4-5, 2014
Structure - Route Classifications
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RtClass Miles
On-System 104,000
County Roads 147,000
FC City Streets 14,000
Local City Sts 70,000
TPP Planning Conference – June 4-5, 2014
Structure - Route Classifications
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RtClass Miles
On-System 104,000
County Roads 147,000
FC City Streets 14,000
Local City Sts 70,000
Other 3,000
TOTAL 338,000
TPP Planning Conference – June 4-5, 2014
Content - Linear Attribute Groups
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1. Referencing Information
2. Geopolitical Boundary
3. Physical Features
i. Cross-Section
ii. Road Surface
iii. Vehicle Control/Traffic Ops
4. Administrative Designations
5. Use (i.e., Traffic)
• On- and Off-System
• Route ID
• Roadbed
• Begin Distance From Origin
• End Distance From Origin
• Control Section
• Begin Milepoint
• End Milepoint
On-System Only
• Highway Name
• From Reference Marker + Displacement
• To Reference Marker + Displacement
Source: Primarily TPP (Data Management)
TPP Planning Conference – June 4-5, 2014
Content - Linear Attribute Groups
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1. Referencing Information
2. Geopolitical Boundary
3. Physical Features
i. Cross-Section
ii. Road Surface
iii. Vehicle Control/Traffic Ops
4. Administrative Designations
5. Use (i.e., Traffic)
• District/Maintenance District (25)
• County (254)
• City (1,214)
• MPO (25)
• Urban Area (186)
Source: TPP (Data Management)
TPP Planning Conference – June 4-5, 2014
Content - Linear Attribute Groups
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1. Referencing Information
2. Geopolitical Boundary
3. Physical Features
i. Cross-Section
ii. Road Surface
iii. Vehicle Control/Traffic Ops
4. Administrative Designations
5. Use (i.e., Traffic)
• ROW Width (Minimum, Usual)
• Roadbed Width
• Curbs
• Shoulders (Width, Type, Use)
• Surface Width
• Number of Lanes, Lane Width
• Median (Width, Type)
• Base Type, Surface Type
• Surface Treatment (Type, Thickness, Year)
• Access Control
• One-way vs. Two-way
• HOV, Toll
• Speed Limit
• Load Limit (Axle, Gross, Tandem)
Source: TPP (Data Management) and Districts
TPP Planning Conference – June 4-5, 2014
Content - Linear Attribute Groups
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1. Referencing Information
2. Geopolitical Boundary
3. Physical Features
i. Cross-Section
ii. Road Surface
iii. Vehicle Control/Traffic Ops
4. Administrative Designations
5. Use (i.e., Traffic)
• Ownership
• Functional Classification
• National Highway System
• Strategic Highway Network
• Texas Trunk System
• Evacuation Route
• HazMat Route
Source: TPP (Data Management)
TPP Planning Conference – June 4-5, 2014
Content - Linear Attribute Groups
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1. Referencing Information
2. Geopolitical Boundary
3. Physical Features
i. Cross-Section
ii. Road Surface
iii. Vehicle Control/Traffic Ops
4. Administrative Designations
5. Use (i.e., Traffic)
• AADT (current and historical last 10 years
• % Single- and Combination-Unit Trucks
• Daily and Peak Hour
Source: TPP (Traffic Section)
TPP Planning Conference – June 4-5, 2014
Maintenance - What prompts a change?
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1. Highway Designation Minute Order
2. Other Administrative Actions
(e.g., Speed Limit Change, City Annexation)
3. Road Construction Projects
TPP Planning Conference – June 4-5, 2014
Maintenance - What prompts a change?
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1. Highway Designation Minute Order
2. Other Administrative Actions
(e.g., Speed Limit Change, City Annexation)
3. Road Construction Projects
TPP Planning Conference – June 4-5, 2014
Maintenance - What prompts a change?
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1. Highway Designation Minute Order
2. Other Administrative Actions
(e.g., Speed Limit Change, City Annexation)
3. Road Construction Projects
TPP Planning Conference – June 4-5, 2014
Maintenance - Data Sources
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• Minute Orders
• Construction Plans
• Field Data Collection
• Regular ‘Calls for Data’
• Blind Luck
• You!
TPP Planning Conference – June 4-5, 2014
Maintenance - Data Sources
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• Minute Orders
• Construction Plans
• Field Data Collection
• Regular ‘Calls for Data’
• Blind Luck
• You!
TPP Planning Conference – June 4-5, 2014
Maintenance - On-System Project Tracking
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• Recapitulation
• Mileage Report Tracking (MRT)
TPP Planning Conference – June 4-5, 2014
Total Mileage by Route Class Statewide 2012 AADT
Tarrant County Functional Class
Cross-tabulations
Miles, Lane Miles, Vehicle Miles of Travel
Commonly Requested Statistics
Uses of Roadway Inventory
020,00040,00060,00080,000
100,000120,000140,000160,000
On-System County
Roads
FC City
Streets
Local City
Streets
0
10
20
30
40
50
60
70
0 1 3 4 7 13 16 17 23 31 38 44 56 61 74
AA
DT
(T
ho
usa
nd
s)
Distance From Origin)
IH-37 Corpus Christi District
Interstate 2%
Prin. Art. (OFE) 1%
Prin. Art. (Other) 5%
Minor Arterial 6%
Collector 12%
Local 74%
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District Ownership
County By Functional Class
City Highway System
TPP Planning Conference – June 4-5, 2014
AADT Number of Lanes
NHS
We love maps, because they…
provide context to the data
effectively convey information
add visual appeal to documents and
presentations
allow for an easy way to verify our data
Visualizing Data…
Uses of Roadway Inventory
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TPP Planning Conference – June 4-5, 2014
Availability
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TPP Planning Conference – June 4-5, 2014
Availability
One .zip file, containing three files:
1. TxDOT_Roadway_Inventory_ReadMe.pdf
2. TxDOT_Roadway_Inventory_Specifications.pdf
3. TxDOT_Roadway_Inventory.mbd (Personal Geodatabase)
3a. TxDOT_Roadway_Inventory (Table)
3b. TxDOT_Roadway_Linework (Feature Class)
3c. TxDOT_Roadway_Linework_Routed (Feature Class)
ReadMe
Specs.
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TPP Planning Conference – June 4-5, 2014
Challenges
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• Capturing cross-section changes
• Construction performed without related Minute Order
• New/Altered off-system streets
• Telling the historical story
TPP Planning Conference – June 4-5, 2014
Moving Forward
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Onward and Upward
– Geospatial Roadway Inventory Database (GRID)
– STARS II
– Functional Re-Classification/Urban Boundary Smoothing