Suffolk County covers the eastern two-third portion of Long Island. Its vast expanse hosts historic towns built up around Long Island Railroad stations and swathes of suburban development. Around 90% of Suffolk’s population and activity is concentrated in its western third, while the rural eastern end includes the popular resort area known as “the Hamptons“.
Starting in 2020, Scudder Wagg led our firm’s work on an initiative to redesign the bus network for Suffolk County Transit (SCT). The new network we designed was launched in late 2023. JWA also supported SCT in implementing the network: we developed a new detailed system map and a schematic map, revamped their route timetable brochures and bus stop signs, and advised on many other technical elements like website design.
The plan consolidated services to offer much better frequency (at the cost of a reduction in overall coverage). In the old SCT network, only 3 routes had a frequency of every 30 minutes or better, but now 12 corridors (11 full routes and one offset corridor) have service every 30 minutes on weekdays. The plan also invested in reliability improvements and greatly expanded service in the evenings, on Saturdays and on Sundays. With the new network, nearly all routes now run 7 days per week and much later into the evening. All these investments in more useful frequencies and spans (keys to useful, ridership-oriented service) and improving reliability by fixing outdated timetables added up to a 30% increase service.
Here is the SCT network before the redesign (click all images to enlarge and sharpen):
Colors still represent frequency but note that the levels are different in this map: red means service every 30 minutes while deep blue is service up to every hour. A lot of service was concentrated in the much denser western third portion, but it was a jumble of infrequent, uncoordinated routes with many deviations and irregular timetables.
Compare this to today’s SCT network, in the official network map that we designed:
You can see many more red corridors, particularly in the County’s denser western portion. We were able to increase frequencies and provide much more legible service pattern by consolidating service. There are now only two service types: 30-minute service and 60-minute service. This frequency is proclaimed clearly in the new maps, brochures, bus stops, and the website.
However, achieving this much frequency required streamlining many complexities. In the western part of the county, the old network had many infrequent routes close together. The new one has more frequent routes, but further apart. Walking distances are greater but waiting time is less, which produces an overall increase in access to opportunity but many complaints from individuals who have to walk further. We were on the front lines of much of this conversation. In fact, our planners were there helping on the street when the plan was implemented.
Another key feature of the new SCT network is timed transfers (or pulses). At seven locations across the County, buses on several routes arrive together every 30 minutes or every hour. Passengers can transfer between routes with a short wait and be on their way. Ensuring reliable timed transfers is critical to making the new SCT network as useful as possible, given that routes only run every 30 or 60 minutes. This network design strategy is useful where you can’t afford better frequency and you have multiple but dispersed sets of moderately dense places and no dominate central core. However, it requires thinking about the connection points first, and designing the network around them.
With more frequent service on many corridors, and timed connections in the places where the most people would need to transfer, we estimated that the average resident would be able to get to 50% more jobs in 60 minutes and the average low-income resident would see a 60% increase in access to jobs. These outcomes meant not only that transit users would have more choices in their lives; they were also a solid indication of the higher ridership potential of this new network.
The County implemented the new network on October 29, 2023 and the results since have been impressive. Based on data reported to the FTA National Transit Database, ridership increased by about 15% in just the first three months (November 2023 to January 2024) and after 12 months, ridership showed an average of a 25% gain compared to the same month in the prior year (November 2022-October 2023 compared to November 2023-October 2024).
Ridership is now about 39% higher as of July 2025 (comparing the 12-month rolling average ridership in July 2025 versus October 2023) and County staff recently touted the ridership success at a Car Free Day event. Our team at JWA is excited to be continuing to support SCT with various efforts to continue to improve this network including developing updated schedules based on the most recent real-time tracking data and some route adjustments now that we have more data on reliability, ridership, and customer concerns.





























