Short answer: FDOT's 2025 annual average daily traffic counts put CR 512 east of I-95 in Sebastian at 24,000 vehicles a day and CR 512 between Barber Street and Easy Street at 19,300. The busiest U.S. 1 segment north of milepost 15, between mileposts 18.808 and 20.303, carried 30,500. Roseland Road north of CR 512 carried 9,900, and each of the four I-95 ramps at CR 512 carried 4,500 to 5,300.
Last verified: October 12, 2026, against the sources listed at the end of this page.
How many vehicles a day use CR 512 through Sebastian?
The busiest stretch of CR 512 in Sebastian, running east from the southbound I-95 ramps, carried 24,000 vehicles a day in 2025, according to FDOT annual average daily traffic counts.
FDOT files CR 512 and Sebastian Boulevard as roadway 88040000. Its road name layer lists mileposts 21.074 to 29.948 as CR-512 and mileposts 29.948 to 30.642 as Sebastian Blvd (FDOT Roadways with Local Names). Several segment ends in the Sebastian Highlands carry no cross street in the FDOT file, so the table uses FDOT mileposts where a street name is missing.
| Segment (FDOT description) | Mileposts | 2025 AADT | Truck factor |
|---|---|---|---|
| West of I-95, ending at the southbound I-95 ramps | 21.092 to 24.15 | 13,400 | 12.4 |
| From the southbound I-95 ramps east | 24.15 to 26.597 | 24,000 | 8.1 |
| No street label in the FDOT file | 26.597 to 27.868 | 23,000 | 7.0 |
| Segment ending at Barber Street | 27.868 to 28.254 | 17,300 | 7.5 |
| Barber Street to Easy Street | 28.254 to 29.589 | 19,300 | 6.9 |
| Easy Street east | 29.589 to 29.946 | 14,100 | 7.5 |
| Segment ending at U.S. 1 | 29.946 to 30.642 | 9,300 | 7.5 |
CR 512 between Barber Street and Easy Street carried 19,300 vehicles a day in 2025 (FDOT AADT layer). The segment ending at U.S. 1 carried 9,300. The difference, 24,000 minus 9,300, is 14,700 vehicles a day. The FDOT counts give a volume for each segment but do not record where vehicles enter or leave the road.
The truck factor falls the same way. FDOT records 12.4 for CR 512 west of I-95 toward Fellsmere, 8.1 east of the interstate and 6.9 between Barber Street and Easy Street (FDOT). The arithmetic in the U.S. 1 section below shows the factor is the truck share of daily traffic in percent.
How busy is U.S. 1 through Sebastian and Roseland?
The northern U.S. 1 segments in Indian River County carried 24,000 to 30,500 vehicles a day in 2025, the highest count on the FDOT segment from milepost 18.808 to milepost 20.303.
U.S. 1 is FDOT roadway 88010000, named Federal Hwy in the road name layer from milepost 8.047 to milepost 22.269 (FDOT). North of milepost 15 the count records name no cross streets: both description fields read N/A except on the last segment, which ends at the Brevard County line (FDOT U.S. 1 AADT query). The segments below are therefore identified only by milepost, counting north to the Brevard County line.
| Mileposts | FDOT count site | 2025 AADT | 2025 truck AADT | Truck factor |
|---|---|---|---|---|
| 17.199 to 18.808 | 880114 | 24,500 | 1,176 | 4.8 |
| 18.808 to 20.303 | 887021 | 30,500 | 1,373 | 4.5 |
| 20.303 to 21.386 | 887022 | 30,000 | 1,350 | 4.5 |
| 21.386 to 22.269, ending at the Brevard County line | 880165 | 24,000 | 1,080 | 4.5 |
Trucks are a small share of U.S. 1 traffic in north Indian River County. FDOT's truck layer lists 1,373 trucks a day on the 30,500 vehicle segment (FDOT Truck AADT layer). Dividing 1,373 by 30,500 gives 4.5 percent, the same value FDOT records as that segment's truck factor.
The same truck layer gives a benchmark inside the county. U.S. 1 between 30th Street and 37th Street in Vero Beach carried 33,000 vehicles a day in 2025 (FDOT). The busiest north county segment near Sebastian therefore carried 2,500 fewer vehicles a day (33,000 minus 30,500), and the segment ending at the Brevard County line carried 9,000 fewer (33,000 minus 24,000).
Which Sebastian Highlands streets carry the most traffic?
Among the side road segments FDOT describes by their junction with Sebastian Boulevard or Roseland Road, Roseland Road north of CR 512 carried the most traffic in 2025, at 9,900 vehicles a day, followed by Barber Street south of CR 512 at 8,800.
| Road (FDOT name layer) | Segment as FDOT labels it | 2025 AADT |
|---|---|---|
| Roseland Road (88602000) | CR512/Sebastian Blvd north | 9,900 |
| Barber Street (88000414) | CR-512 to CR-615/Schumann Dr | 8,800 |
| Laconia Street (88000420) | Crystal Mist Ave to CR512/Sebastian Blvd | 4,300 |
| Roseland Road, short leg (88000437) | Laconia St to CR-512 | 4,300 |
| S Fleming Street (88000086) | Sebastian Blvd to S Easy St | 3,600 |
| Barber Street (88000429) | CR512/Sebastian Blvd to Wimbrow Dr | 2,300 |
| Fleming Street (88000424) | CR512/Sebastian Blvd to Main St | 2,100 |
| Powerline Road (88000087) | Sebastian Blvd to Main St | 2,100 |
| N Indian River Drive (88000439) | US-1/SR-5 to Roseland Rd | 1,100 |
| High Street and Louisiana Avenue (88000431) | Sebastian Blvd EB to Main St | 750 |
| Wimbrow Drive (88000426) | Main St to CR-512 | 400 |
Barber Street shows how CR 512 splits the Sebastian Highlands. South of CR 512 toward Schumann Drive, which FDOT labels CR-615, Barber Street carried 8,800 vehicles a day in 2025; north of CR 512 toward Wimbrow Drive it carried 2,300 (FDOT AADT query, Sebastian segments). The street names behind each roadway number come from the FDOT name layer, which lists 88602000 as Roseland Rd from milepost 0 to 4.686 (FDOT).
Four counted segments link Sebastian Boulevard with Main Street: Fleming Street and Powerline Road at 2,100 vehicles a day each, High Street and Louisiana Avenue at 750, and Wimbrow Drive at 400 in 2025 (FDOT). Laconia Street, from Crystal Mist Avenue to CR 512, carried 4,300.
On the lagoon side, North Indian River Drive between U.S. 1 and Roseland Road carried 1,100 vehicles a day in 2025, down from 1,500 in each year from 2021 through 2023 (FDOT historical AADT).
How much traffic uses the I-95 interchange at CR 512?
Each of the four ramps at the I-95 interchange with CR 512 carried 4,500 to 5,300 vehicles a day in 2025, and I-95 carried 59,423 a day on its segment ending at the Brevard County line.
| Ramp (FDOT description) | 2025 AADT |
|---|---|
| EB CR-512 to SB I-95 | 5,300 |
| NB I-95 to EB CR-512 | 4,800 |
| WB CR 512 to NB I-95 | 4,700 |
| SB I-95 to WB CR-512 | 4,500 |
Added together, the four Sebastian ramps carried 5,300 + 4,800 + 4,700 + 4,500 = 19,300 vehicle movements a day in 2025 (FDOT AADT query, CR 512 segments). The busiest movement is the ramp from eastbound CR 512 onto southbound I-95.
FDOT roadway 88081000 is named I-95 from milepost 0 to milepost 19.198 in Indian River County (FDOT). Its segment from milepost 15.178 to the Brevard County line carried 59,423 vehicles a day in 2025 with a truck factor of 14.7, while the segment from Bridge No-880102 to milepost 15.178 carried 53,500 (FDOT). The northern I-95 segment west of Sebastian carried 5,923 more vehicles a day (59,423 minus 53,500), about 11 percent more (5,923 divided by 53,500).
How have Sebastian traffic counts changed since 2021?
Traffic on CR 512 between Barber Street and Easy Street in Sebastian grew from 15,500 vehicles a day in 2021 to 19,300 in 2025, according to FDOT historical AADT records.
| Segment | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|
| CR 512, Barber Street to Easy Street | 15,500 | 15,500 | 15,700 | 19,500 | 19,300 |
| CR 512, segment ending at Barber Street | 14,400 | 14,400 | 14,600 | 17,300 | 17,300 |
| CR 512, segment ending at U.S. 1 | 6,300 | 6,300 | 6,400 | 9,100 | 9,300 |
| CR 512, from the southbound I-95 ramps | 21,000 | 23,000 | 20,800 | 24,000 | 24,000 |
| U.S. 1, mileposts 18.808 to 20.303 | 22,000 | 22,000 | 22,000 | 22,000 | 30,500 |
| Roseland Road north of CR 512 | 9,600 | 9,300 | 9,300 | 9,300 | 9,900 |
| Laconia Street, Crystal Mist Ave to CR 512 | 4,200 | 4,200 | 4,200 | 4,200 | 4,300 |
The arithmetic for the busiest Sebastian Boulevard approach is plain: 19,300 minus 15,500 is 3,800 more vehicles a day, a 24.5 percent rise over four years (3,800 divided by 15,500), using the FDOT values for 2021 and 2025 (FDOT historical AADT, CR 512).
Most of the CR 512 increase in Sebastian appears between the 2023 and 2024 records, when the Barber Street to Easy Street value moved from 15,700 to 19,500 and the segment ending at U.S. 1 from 6,400 to 9,100 (FDOT). On U.S. 1, the historical service lists 22,000 for each year from 2021 to 2024 on mileposts 18.808 to 20.303 and 30,500 for 2025 (FDOT historical AADT, U.S. 1). The FDOT records give the size of each change in Indian River County but not its cause.
Where do Sebastian traffic counts come from?
Every Sebastian figure on this page is an FDOT annual average daily traffic value for 2025 or an earlier year, taken from statewide GIS layers that FDOT updates each April.
FDOT describes its AADT layer as showing the location of traffic breaks and affiliated annual average daily traffic volumes derived from the FDOT Traffic Characteristics Inventory (FDOT layer description). The department's traffic data page states that traffic data is updated annually each April and that 2025 Traffic Data is available now (FDOT Traffic Data), so 2025 is the newest vintage for Sebastian, Roseland and the rest of Indian River County as of October 2026. The same page points to Florida Traffic Online, FDOT's map of count site locations and historical counts.
Each Sebastian segment ties to one FDOT count site. CR 512 from Barber Street to Easy Street is site 888547, and U.S. 1 from milepost 18.808 to milepost 20.303 is site 887021 (FDOT; FDOT). Residential streets in the Sebastian Highlands that are not part of the FDOT inventory have no count in these layers. Historical values come from FDOT's Annual Average Daily Traffic Historical service, which returns 2021 through 2025 for the Sebastian and Roseland segments (FDOT historical AADT).
Frequently asked questions
What is the busiest road in Sebastian by FDOT count?
Among the FDOT counted roads on this page other than I-95, U.S. 1 is busiest, at 30,500 vehicles a day in 2025 on the segment between mileposts 18.808 and 20.303. CR 512 peaks at 24,000 just east of I-95. I-95 itself carries more, 59,423 a day north of milepost 15.178.
Does FDOT count traffic on CR 512 inside the Sebastian Highlands?
Yes. CR 512 and Sebastian Boulevard are FDOT roadway 88040000, with counts on every segment from I-95 to U.S. 1. The 2025 values range from 24,000 vehicles a day near I-95 to 9,300 on the segment ending at U.S. 1.
Why do the U.S. 1 counts near Sebastian have no street names?
FDOT's records for U.S. 1 north of Vero Beach read N/A in both description fields, except for the final segment ending at the Brevard County line. The segments can only be identified by milepost and by FDOT count site number, such as site 887021.
When will FDOT publish 2026 traffic counts for Sebastian?
FDOT states that its traffic data is updated annually each April. The 2025 data is the current release as of October 2026, so the next annual set for Sebastian and Indian River County would follow FDOT's April cycle.
How much has traffic grown on Sebastian Boulevard?
On the CR 512 segment between Barber Street and Easy Street, FDOT counts rose from 15,500 vehicles a day in 2021 to 19,300 in 2025, an increase of 3,800 a day, or 24.5 percent. The segment ending at U.S. 1 went from 6,300 to 9,300.
Sources
- FDOT RCI Annual Average Daily Traffic layer, query of Sebastian and Roseland labeled segments, Indian River County https://gis.fdot.gov/arcgis/rest/services/RCI_Layers/MapServer/0/query?where=COUNTY%3D%27INDIAN%20RIVER%27%20AND%20(DESC_FRM%20LIKE%20%27%25SEBASTIAN%25%27%20OR%20DESC_TO%20LIKE%20%27%25SEBASTIAN%25%27%20OR%20DESC_FRM%20LIKE%20%27%25ROSELAND%25%27%20OR%20DESC_TO%20LIKE%20%27%25ROSELAND%25%27)&outFields=YEAR_,ROADWAY,DESC_FRM,DESC_TO,AADT&returnGeometry=false&f=html Used for: 2025 AADT on Roseland Road, Barber Street, Laconia Street, Fleming Street, Wimbrow Drive, Powerline Road, N Indian River Drive
- FDOT RCI Annual Average Daily Traffic layer, query of segments labeled 512, Indian River County https://gis.fdot.gov/arcgis/rest/services/RCI_Layers/MapServer/0/query?where=COUNTY%3D%27INDIAN%20RIVER%27%20AND%20(DESC_FRM%20LIKE%20%27%25512%25%27%20OR%20DESC_TO%20LIKE%20%27%25512%25%27)&outFields=YEAR_,ROADWAY,DESC_FRM,DESC_TO,BEGIN_POST,AADT&returnGeometry=false&orderByFields=ROADWAY,BEGIN_POST&f=html Used for: 2025 AADT on the four I-95 and CR 512 interchange ramps
- FDOT RCI Annual Average Daily Traffic layer, U.S. 1 (roadway 88010000) north of milepost 15 https://gis.fdot.gov/arcgis/rest/services/RCI_Layers/MapServer/0/query?where=ROADWAY%3D%2788010000%27%20AND%20BEGIN_POST%3E15&outFields=YEAR_,COSITE,DESC_FRM,DESC_TO,BEGIN_POST,END_POST,AADT&returnGeometry=false&f=html Used for: 2025 AADT by milepost on U.S. 1 to the Brevard County line, count site numbers
- FDOT RCI Truck AADT layer, U.S. 1 (roadway 88010000) in Indian River County https://gis.fdot.gov/arcgis/rest/services/RCI_Layers/MapServer/19/query?where=ROADWAY%3D%2788010000%27&outFields=*&returnGeometry=false&f=html Used for: 2025 truck AADT and truck factor on U.S. 1; Vero Beach comparison segment
- FDOT Annual Average Daily Traffic Historical (TDA), Sebastian and Roseland labeled segments https://services1.arcgis.com/O1JpcwDW8sjYuddV/ArcGIS/rest/services/Annual_Average_Daily_Traffic_Historical_TDA/FeatureServer/0/query?where=COUNTY%3D%27INDIAN%20RIVER%27%20AND%20(DESC_FRM%20LIKE%20%27%25SEBASTIAN%25%27%20OR%20DESC_TO%20LIKE%20%27%25SEBASTIAN%25%27%20OR%20DESC_FRM%20LIKE%20%27%25ROSELAND%25%27%20OR%20DESC_TO%20LIKE%20%27%25ROSELAND%25%27)&outFields=YEAR_,ROADWAY,DESC_FRM,DESC_TO,AADT&returnGeometry=false&orderByFields=ROADWAY,YEAR_&f=html Used for: 2021 to 2025 AADT history on Sebastian side roads
- FDOT RCI Annual Average Daily Traffic layer, CR 512 / Sebastian Boulevard (88040000) and I-95 (88081000) https://gis.fdot.gov/arcgis/rest/services/RCI_Layers/MapServer/0/query?where=ROADWAY%3D%2788040000%27%20OR%20ROADWAY%3D%2788081000%27&outFields=YEAR_,ROADWAY,COSITE,DESC_FRM,DESC_TO,BEGIN_POST,END_POST,AADT,TFCTR&returnGeometry=false&orderByFields=ROADWAY,BEGIN_POST&f=html Used for: 2025 AADT and truck factor by milepost on CR 512 and I-95
- FDOT RCI Roadways with Local Names layer, Sebastian area roadway IDs https://gis.fdot.gov/arcgis/rest/services/RCI_Layers/MapServer/13/query?where=ROADWAY%20IN%20(%2788040000%27,%2788602000%27,%2788000414%27,%2788000420%27,%2788000437%27,%2788000439%27,%2788000424%27,%2788000429%27,%2788000426%27,%2788000086%27,%2788000087%27,%2788000431%27,%2788081000%27,%2788010000%27)&outFields=ROADWAY,NAME,BEGIN_POST,END_POST&returnGeometry=false&orderByFields=ROADWAY,BEGIN_POST&f=html Used for: local street names for FDOT roadway numbers and milepost ranges
- FDOT Annual Average Daily Traffic Historical (TDA), CR 512 / Sebastian Boulevard east of I-95 https://services1.arcgis.com/O1JpcwDW8sjYuddV/ArcGIS/rest/services/Annual_Average_Daily_Traffic_Historical_TDA/FeatureServer/0/query?where=ROADWAY%3D%2788040000%27%20AND%20BEGIN_POST%3E24&outFields=YEAR_,ROADWAY,DESC_FRM,DESC_TO,BEGIN_POST,AADT&returnGeometry=false&orderByFields=BEGIN_POST,YEAR_&f=html Used for: 2021 to 2025 AADT history on CR 512 segments
- FDOT Annual Average Daily Traffic Historical (TDA), U.S. 1 north of milepost 17 https://services1.arcgis.com/O1JpcwDW8sjYuddV/ArcGIS/rest/services/Annual_Average_Daily_Traffic_Historical_TDA/FeatureServer/0/query?where=ROADWAY%3D%2788010000%27%20AND%20BEGIN_POST%3E17&outFields=YEAR_,ROADWAY,DESC_FRM,DESC_TO,BEGIN_POST,AADT&returnGeometry=false&orderByFields=BEGIN_POST,YEAR_&f=html Used for: 2021 to 2025 AADT history on northern U.S. 1
- FDOT Transportation Data and Analytics, Traffic Data https://www.fdot.gov/statistics/trafficdata/default.shtm Used for: annual April update; 2025 data available; Florida Traffic Online
- FDOT RCI_Layers MapServer layer 0, Annual Average Daily Traffic (layer description) https://gis.fdot.gov/arcgis/rest/services/RCI_Layers/MapServer/0 Used for: definition and source of the AADT layer (Traffic Characteristics Inventory)
