Impacting Local Government
Updating Functional Classification Using GIS
September 12, 2013
Bentonville, Arkansas
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Presentation Overview
Introduction
Federal-Aid System
Functional Class
Adjusted Urban Area Boundary
Purpose of Project
Methodology – GIS
Proposed Process
Good Practice Steps & Schedule
Questions and Answers
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“Federal-Aid highway funds are authorized by
Congress to assist the States in providing for
construction, reconstruction, and improvement
of highways and bridges on eligible Federal-Aid
highway routes and for other special purpose
programs and projects.”
The Federal-Aid System
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The Federal-Aid System
Arkansas 22,360 miles
State Highways 16,220 miles
County Roads 3,780 miles
City Streets 2,360 miles
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Functional Classification
Importance
• Federal-Aid highway funding
• Impacts to Roadway Design
• Project Prioritization
Remember
Funding is directly related to the
functional classification of a road
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Functional Classification
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Functional Classification
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Functional Classification
Interstate
Other Freeway & Expressway
Other Principal Arterial
Minor Arterial
Major Collector
Minor Collector
• Urban Minor Collectors – Yes
• Rural Minor Collectors - No
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Functional
Classification
Mileage Extent
(Rural)
Mileage Extent
(Urban)
Interstate 0% - 3% 1% -3%
Other Freeway & Expressway 1% - 14% 6% - 19%
Other Principal Arterial 19% - 38% 14% - 27%
Minor Arterial 3% - 5% 8% - 13%
Major Collector 11% - 18%
All Collectors Combined
Minor Collectors 4% - 15% 8% - 15%
Functional Classification
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Classification Population
Rural < 5,000
Small Urban 5,000 to 49,999
Urbanized >= 50,000
Adjusted Urban Area Boundary
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Adjusted Urban Area Boundary
City (Urban) Responsibility
TEST
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Adjusted Urban Area Boundary
County (Rural) Responsibility
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FHWA requirement to update the urban
boundary and functional class of roadways
every 10 years.
Update functional classifications due to
changes in the urban boundary as a result of
the 2010 U.S. Census data.
Re-assess the existing functional
classifications and make changes and
additions where necessary to the system
since 2000.
Purpose of Project
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Methodology
Updating using GIS
is a new process
Utilize
ESRI Shapefiles
Geo-Database Files
Learn as we go
Utilize stakeholder
Input
Inter-Agency
Cooperation
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ESRI Shapefiles
sent to
requesting
Agency
Agency utilizes
Shapefiles and
makes updates
Return to AHTD
for evaluation
Evaluated files
returned to
Agency
Agency reviews
and officially
approves
Return to ATHD
for FHWA
approval
Methodology
Proposed Process
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Assess Need for Additional Functional Classification
Changes
Make updates
Meet FHWA mileage % ranges
Prepare Maps or GIS Files for AHTD Evaluation
Work with AHTD during evaluation process
Evaluation process will take some time
Seek FHWA Approval
FHWA is a concerned stakeholder
Methodology
Proposed Process
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Functional Classification - Triggers
Changes in roadway characteristics or use
New significant roadways
Significant growth (population/traffic)
Extension of existing roadways
Changes in traffic patterns
New schools, industry, or other economic assets
Methodology
Proposed Process
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Minimize functional class changes along the
roadway
A roadway of higher classification should not
terminate at a single roadway of a lower
classification
There will be exceptions
Maintain Topological Connectivity
Be consistent
Use common sense
Methodology
Proposed Process
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Methodology
Proposed Process
Think Continuity
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Good Practice Steps & Schedule
Arterial
Collector
ors
Local
Areas of Uncertainty
Determining level of functional
classification of a roadway can be
difficult at times and create
uncertainty.
FHWA Functional Classification
Manual
FHWA Functional Classification
Website (under construction)
AHTD as a resource
Share understanding of the game plan
Encourage & work towards timely
delivery of functional classification
revisions
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Event Schedule of Dates
AHTD launches functional class
update process
September 2013
AHTD works with partners to review
and purpose changes to the
functional classification of it’s
roadways
September 2014
Approved by Local Agency
Approved by AHTD
AHTD processes all proposed
functional classification changes and
submits for FHWA review and
approval
December 2014
Approved by FHWA
AHTD submits FHWA approved
functional class changes through
HPMS
June 2015
Good Practice Steps & Schedule
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What If: If we do not complete the functional class update, what
happens?
Answer: AHTD will update the State Highways in your area and
leave the existing functional classification at the 2000 level with only
minor adjustments.
What If: Can functional classification be updated at a later date?
Answer: Yes, but only on a case-by-case basis. System-wide
update is a one shot deal.
What If: Future or proposed un-built roads are included?
Answer: There is a 4-year must be built clause and it should
already be in the STIP before being added to the functional class
file. (see above)
What If
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If you have any questions please contact me by e-mail at:
[email protected]
or
(501) 569-2406