HomeMy Public PortalAboutTybee Traffic Calming and Pedestrian Access Scope and Cost Estimate
PROPOSAL FOR
TYBEE ISLAND
TRAFFIC &
PEDESTRIAN
STUDIES
AUGUST 5, 2014
Tybee Island - Jones Avenue and North Campbell Avenue Studies
Page 1
Task 1: Jones Avenue Study Traffic Calming and Pedestrian Study
Study Area: (see map on page 3)
Jones Avenue beginning at the intersection of Chatham Avenue extending approximately 1.5 miles north
to US 80. A separate assessment at 7th and 8th Streets will also be completed to assess pedestrian
accessibility and safety.
Perceived issues:
Speeding traffic along Jones Avenue due to topography and alignment of the street (straight and
flat with no visual barriers)
Narrow lanes will not be able to accommodate two standard travel lanes with pedestrian
facilities; separate pedestrian facilities will be required outside existing edge of pavement.
Power poles are located a varying distances from edge of pavement (approximately 5 – 6 feet)
Designated on street parking is not provided and not desired.
Three new four-way stop signs were installed over the past 2 months at 6th, 12th and 14th streets
to attempt to slow traffic. There are some concerns about perceived delay for emergency
response vehicles traveling through this corridor.
There is heavy vegetation along corridor that reduces visibility is select locations.
Jones Avenue will be repaved this winter so a solution is desirable ahead of this improvement
Potential Solutions Discussed:
Construction of a 5 foot sidewalk on the east side of Jones Avenue only that would abut flush
with existing roadway travel lane.
Use of vegetation (i.e. Palms) planted along road edge to slow traffic
Evaluation of funding options including the Safe Routes to School program
Proposed Sub-Tasks:
1.1 Conduct Speed Study and Engineering Inspection
RS&H proposes to complete a speed study evaluation following the standard practice and
methodologies of the Institute of Transportation Engineers (ITE). Traffic volumes and speeds
are proposed to be collected in two locations along Jones Avenue using mechanical hose/tube
counters. RS&H proposes to utilize the services of All Traffic Data, Inc. (ATD) for this work. The
counters will be non-intrusive to vehicles and pedestrians and will likely be in place for three
days. Upon completion of the counting process, the data will be brought back to ATD’s office
for processing and quality control before it is submitted to RS&H.
RS&H staff will also perform a safety evaluation of the corridor by reviewing historic crash
reports provided by the Town’s Public Safety Office for the most recent 1 – 3 years. Crashes
involving pedestrians will be noted.
RS&H staff will also perform an engineering evaluation of the corridor to identify potential
issues and constraints that could potentially impact the construction of traffic calming devices
with a separate sidewalk feasibility analysis. Field notes will be taken to assist with
development of a pre-concept map that will detail the proposed improvements. This map will
also include the location(s) of pedestrian (sidewalk) facilities.
Tybee Island - Jones Avenue and North Campbell Avenue Studies
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1.2 Analyze Speed Study Data and Document Results
Upon receipt of the speed and volume data results from ATD, RS&H will review and analyze the
data using methodology prescribed in the Institute of Transportation Engineers (ITE) Manual of
Transportation Engineering Studies. For vehicle speed, the standard threshold commonly
utilized is the 85th percentile speed, which is the speed at which 85 percent of the free-flowing
vehicles are traveling at or below.
If additional roadways will need to be analyzed for implementation of potential traffic calming
measures, RS&H will present an overview of prioritization and ranking systems utilized by other
jurisdictions. This may help to allocate limited funding to the roadway locations most in need.
1.3 Development of Recommendations Based upon Menu of Potential Traffic Calming Measures
Should the results of the speed and volume studies indicate speeding issues along Jones Avenue,
RS&H will summarize, document and present a menu of commonly utilized traffic calming
devices. This traffic calming “primer” will include the pros, cons and costs associated with each
traffic calming measure to provide information for Tybee Island staff and elected officials to
determine a preferred solution(s).
The potential options will also include the addition of pedestrian (sidewalk) facilities along Jones
Avenue and 8th Street. The pedestrian (sidewalk) facilities will be depicted on an aerial
photography map and will detail corridor features, such as parcel lines and ROW boundaries.
These corridor features will be provided by the Town in CADD or GIS format. One (1) pre-
concept map alternative will be provided. Based on the Pre-concept map and the traffic calming
recommendations, a pre-concept cost estimates will also be developed based on current GDOT
pay item unit costs. If needed, RS&H will also contact the Power Company to verify existing
power pole locations. Any potential utility conflicts will be included on the pre-concept map.
1.4 Attend City Council, Committee and/or Public Meetings
RS&H proposes to meet with the City up to three times during the evaluation. The meetings for
Tasks 1 and 2 will be conducted simultaneously:
Meeting 1 - Kick-off: This meeting is proposed to include the RS&H team and
Tybee Island Staff, including the City Manager, planning staff, and
representatives from emergency services. The meeting agenda will cover the
proposed project methodology, data needs, project deliverables and schedule.
Meeting 2 - Presentation of Results and Potential Traffic Calming Measures:
This meeting will include a presentation of the speed and volume study results,
and if a speeding issue is identified, a summary of potential traffic calming
measures that could be implemented. Following the presentation, a work shop
is proposed to include discussion of the potential measures best suited for Jones
Avenue. Proposed pedestrian enhancements will also be presented at this
meeting on pre-concept map with associated cost estimates.
Meeting 3 – Presentation of Final Recommendations: If needed and requested,
RS&H will present final recommendations based upon the technical results as
well as input gathered during the Meeting 2 work shop.
Tybee Island - Jones Avenue and North Campbell Avenue Studies
Page 3
Maritime Charter School
Recently Installed 4-way Stop Signs
Study Corridor
Jones Avenue Study Area
Tybee Island, GA
Tybee Island - Jones Avenue and North Campbell Avenue Studies
Page 4
Task 2. North Campbell Avenue Pedestrian Study
Study Area: (see map on following page)
North Campbell Avenue from US 80 to Solomon Avenue
Perceived issues:
Limited right-of-way along North Campbell Avenue
There are several vertical grade changes along corridor
There is pedestrian activity created by public beach access, Public Park, assisted living facility
residents and a new City Hall facility
Proposed Sub-tasks:
2.1 Conduct Engineering Inspection
RS&H will conduct a field inspection of North Campbell Avenue to evaluate the existing conditions as
well as the potential to construct a pedestrian facility (sidewalks) connecting US 80 north to Solomon
Avenue.
2.2 Review Data and Develop Draft Recommendations
Subsequent to completion of the field inspection, RS&H will summarize the issues and opportunities
associated with the feasible development of pedestrian enhancements along North Campbell Avenue.
The information gathered from the site visit as well as input obtained from Tybee Island staff during the
kick-off meeting will be used to develop pre-concept maps for the recommended pedestrian
enhancements. Maps will be completed on aerial photography and additional detail (such as parcel
lines and ROW boundaries) will be shown if data is readily available electronically from the Town (i.e.
GIS or CAD). Pre-Concept cost estimates will also be developed and presented. If needed, RS&H will
also contact the Power Company to verify existing power pole locations. Any potential utility conflicts
will be included on the pre-concept map.
2.3 Present Preliminary and Final Recommendations
RS&H will present the preliminary and final recommendations for the proposed pedestrian (sidewalk)
facilities along North Campbell Avenue (and if desired) the expanded study area. The recommendations
will include one (1) pre-concept maps and cost estimates.
2.4 Attend City Council, Committee and/or Public Meetings
RS&H proposes to meet with the City up to three times during the evaluation. The meetings for Tasks 1
and 2 will be conducted simultaneously and are discussed as Task 1.4.
Tybee Island - Jones Avenue and North Campbell Avenue Studies
Page 5
Supplemental Task
2.5 Expanded Study Area Pedestrian Assessment:
If desired, RS&H will perform a pedestrian assessment of the expanded study including the area from US
80 north including North Campbell Avenue, Solomon Avenue, Officers Row, Wrenwood Drive, Meddin
Drive, Taylor Street, Van Horne Street and adjacent neighborhoods. See the map on the following page.
The assessment would include a review of existing and future pedestrian needs in this area that would
enhance mobility and providing better connectivity to the new City Hall complex, light house, public
park and assisted living center. This assessment would be at a higher level that the detailed engineering
concepts provided for Jones Avenue or North Campbell Avenue. The deliverable would include technical
memo with map summarizing the existing and future needs, as well as planning-level unit cost estimates
for implementation of the recommendations.
Schedule: Estimate 3 months*
*Utility survey if requested will add several months to schedule, which is beyond the control of RS&H
Budget: See Attachment
Tybee Island - Jones Avenue and North Campbell Avenue Studies
Page 6
Study Corridor
N. Campbell Avenue Study Area
Tybee Island, GA
Supplemental Task
Expanded Study Area
Task Sub-Task Project
Officer
Project
Manager
Senior
Planner
Senior
Engineer Planner
GIS
Analyst
CADD
Technician
Total
Hours
Project
Officer
Project
Manager
Senior
Planner
Senior
Engineer Planner
GIS
Analyst
CADD
Technician Expenses
Total
Dollars
Labor:
1.1 Conduct Speed Study and Engineering Inspection 2 20 4 40 66 -$ -$ 330$ 3,055$ 447$ -$ 3,276$ 3,832$
1.2 Analyze Speed Study Data and Document Results 1 4 6 4 15 230$ -$ 661$ -$ 671$ 322$ -$ 1,884$
1.3 Present Menu of Potential Traffic Calming Measures 1 6 2 4 4 17 230$ 725$ 330$ -$ 447$ 322$ -$ 2,056$
1.4 Attend City Council, Committee and/or Public Meetings 4 8 8 4 24 921$ 967$ 1,322$ 611$ -$ -$ -$ 3,821$
Expenses:
Volume and Speed Counts (two locations)1,150$ 1,150$
Travel/Mileage 250 250$
Misc 100 100$
Task Total 6 14 16 24 14 8 40 122 1,382$ 1,693$ 2,644$ 3,666$ 1,565$ 645$ 3,276$ 1,500$ 13,094$
Labor:
2.1 Conduct Engineering Inspection 16 30 46 -$ -$ -$ 2,444$ -$ -$ 2,457$ 2,444$
2.2 Review Field Data and Develop Draft Recommendations 2 4 6 -$ 242$ -$ -$ -$ 322$ -$ 564$
2.3 Present Preliminary and Final Recommendations 4 2 4 10 -$ 484$ 330$ -$ -$ 322$ -$ 1,136$
2.4 Attend City Council, Committee and/or Public Meetings 2 6 4 4 16 461$ 725$ 661$ 611$ -$ -$ -$ 2,458$
Task Total 2 12 6 20 - 8 30 78 461$ 1,451$ 991$ 3,055$ -$ 645$ 2,457$ -$ 6,603$
19,696$
Supplemental Task 2.5 Expanded Study Area Pedestrian Assessment 2 10 4 2 10 8 36 461$ 1,209$ 661$ 305$ 1,118$ 645$ -$ 0 4,399$
24,095$
Total (No Supplemental Task)
Total With Supplemental Task
Task 1
Jones Avenue Study
Traffic Calming and
Pedestrian Study
Task 2
North Campbell
Avenue Pedestrian
Study
Hours Dollars