Downloads
New White Paper: Understanding Carrying Capacity: What Every St Simons Island resident should know about growth, traffic and planning, by Michael Collett, July, 2026
SSI_Capacity_White_Paper_V1 (pdf)
DownloadFiles coming soon.
Table of Contents- Web Links
St Simons Island-Traffic Related Information
Older Studies and reports available on the web
BATS (Brunswick Area Transportation Study) St Simons Island Sector Study:
St Simons Island Sector Study. A part of the BATS for Glynn County. Among other things,it provides draft locations and cost analyses for a second causeway (see the full BATS MPO below in the "Other Glynn County" section)
SSI Existing Conditions And Impacts Report
One of the original studies commissioned by Glynn County. Detailed analysis of implications for infrastructure based on island-wide development scenarios.
Pond Study
The Pond Study has useful information, but is not a full study with full sampling data that will be required for decision making:
https://glynncounty.org/DocumentCenter/View/64493/pond-traffic-study
Buckholz Study
The Buckholz Study contains the only known analysis by a traffic engineer of traffic light timing and other improvementIs at the site of the proposed traffic circle at Sea Island Road at Frederica Road. It is attached, below.
St Simons Island Gateway Study Initial Concept Review
Inintial proposed flyover and other improvements for the St Simons Gateway,:
https://www.glynncounty.org/DocumentCenter/View/72288/St-Simons-Gateway-Inital-Concept-ReviewAdd a description about this item
Brunswick News, August 22, 2022
County unveils first draft of Sea Island, Frederica roundabout:
https://thebrunswicknews.com/news/local_news/county-unveils-first-draft-of-sea-island-frederica-roundabout/article_d736537c-ebcf-518a-9437-06945d300dd3.html
Glynn County Instructions On Navigating a Roundabout
Glynn Cpunty instructions for using a roundabout. Unfortunately does not offer instructions on how to use your turn signal, which is critical:
https://glynncounty.org/DocumentCenter/View/6308/Roundabout-SSI-brochure2
SEI Report and Plan for Frederica- Sea Island Roundabout
Traffic Analysis Presentation FOr Intersection Improvements at Sea IslandRoad and Frederica Road
https://www.glynncounty.org/DocumentCenter/View/73135/20211019130507?bidId=
Sea Island Road Corridor Study
Contractor's report to Glynn County in support of widening Sea Island Road. Unfortunately, I cannot find the complete file on the County Website, andI ma hsving trouble downloading my 40mb copy. COMING SOON!
St Simons Island-Traffic Related Information
Older Studies and reports available on the web
White paper: Understanding Carying Capacity
BATS (Brunswick Area Transportation Study) St Simons Island Sector Study:
St Simons Island Sector Study. A part of the BATS for Glynn County. Among other things,it provides draft locations and cost analyses for a second causeway (see the full BATS MPO below in the "Other Glynn County" section)
SSI Existing Conditions And Impacts Report
One of the original studies commissioned by Glynn County. Detailed analysis of implications for infrastructure based on island-wide development scenarios.
Pond Study
The Pond Study has useful information, but is not a full study with full sampling data that will be required for decision making:
https://glynncounty.org/DocumentCenter/View/64493/pond-traffic-study
Buckholz Study
The Buckholz Study contains the only known analysis by a traffic engineer of traffic light timing and other improvementIs at the site of the proposed traffic circle at Sea Island Road at Frederica Road. It is attached, below.
St Simons Island Gateway Study Initial Concept Review
Inintial proposed flyover and other improvements for the St Simons Gateway,:
https://www.glynncounty.org/DocumentCenter/View/72288/St-Simons-Gateway-Inital-Concept-ReviewAdd a description about this item
Brunswick News, August 22, 2022
County unveils first draft of Sea Island, Frederica roundabout:
https://thebrunswicknews.com/news/local_news/county-unveils-first-draft-of-sea-island-frederica-roundabout/article_d736537c-ebcf-518a-9437-06945d300dd3.html
Glynn County Instructions On Navigating a Roundabout
Glynn Cpunty instructions for using a roundabout. Unfortunately does not offer instructions on how to use your turn signal, which is critical:
https://glynncounty.org/DocumentCenter/View/6308/Roundabout-SSI-brochure2
Sea Island Road Corridor Study
Contractor's report to Glynn County in support of widening Sea Island Road. Unfortunately,
SEI Report and Plan for Frederica- Sea Island Roundabout
Traffic Analysis Presentation For Intersection Improvements at Sea IslandRoad and Frederica Road
Brunswick
Older Traffic, Development, and Related Material
Glynn Avenue Design Guidelines
The recommended design and planning tool for the Brunswick, GA section of Hwy 17:
https://www.brunswickga.org/planning/page/glynn-avenue-design-guidelines
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Other Glynn County
Links to reports and studies
BATS Metropolitan Transportation Plan
The 2025 and 2045 master plan documents for the Brunswick Area Transportation Study, including St Simons: https://www.transportation.gov/sites/dot.gov/files/2024-04/Transportation_Decision-Making_Guide2.pdf
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Other Relevant Selections
Links to reports and studies
Two Reports on GA Ports Impact
Colonels Island and Mayors Point are prominent features of Glynn County and Brunswick with huge impacts on rail, ship, and motor vehicle traffic. Studies commissioned by GA Ports Authority ooly focus on State-wide impacts. Try to extrapolate local impacts.
Report by Rainwater Construction
https://www.rainwaterconstruction.com/new_investment_at_georgia_ports_authority/
Report from The GA Ports Authority:
https://www.terry.uga.edu/wp-content/uploads/Georgia-Ports-FY-2021-Economic-Impact.pdf
GA DOT Traffic Monitoring Program.
There are several GDOT traffic monitors on SSI, providing a lot, but not all, of the data needed for decision making in transportation planning and design.
https://gdottrafficdata.drakewell.com/publicmultinodemap.asp
NC DOT study on environmental effects of bridges on marshes
Transportation Decision Making Guide
Eccellent primer for halping citizens to understand transportation issues and learn about how to get involved in transportation decisionmaking processes: https://www.transportation.gov/sites/dot.gov/files/2024-04/Transportation_Decision-Making_Guide2.pdf
Roundabouts vs A.I. Traffic Circles
Interesting article/ analysis comparing roundabouts to AI traffic lights on a stretch of Hwy 88 in California. Not all conclusions would apply to our specific circumstances on Frederica Road, but it is a useful framework to study the issues:
Other Relevant Selections
.pdf Documents So-far Not Available Online
ENSAFE Engineering, impacts of Requested Rezone of Parcels In Glynn Haven
Engineers report on implications of developing several lots in Glynn Haven for school resources. See below.
Buckholz Report
The Buckholz report examines and compares timed traffic lights to a roundabout at Frederica and Sea Island Roads. See below.
Sea Island Road Corridor Study. Coming soon!
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St Simons Information Forum's Visual Journey: Browse Our Photo Gallery
St Simons Information Forum
Our first entry
Engineering report on impacts of St Simons Christian School application for a PD allowing construction of a gymnasium and other buildings in the Glynn Haven neighborhood
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