CR 512 and Sebastian Boulevard Corridor Guide

CR 512 runs east from Interstate 95 at Exit 156 through Sebastian to U.S. 1 (FDOT I-95 exit list).

On the I-95 exit list, CR 512 is Exit 156, with SR 60 at Exit 147 to the south and the St Johns Heritage Parkway at Exit 166 to the north (FDOT). FDOT inventories the whole road as roadway 88040000 and measures it in mileposts: the segment counted from the southbound I-95 ramps begins at milepost 24.15, and the last segment ends at U.S. 1 at milepost 30.642 (FDOT traffic inventory). That puts about 6.5 miles of CR 512 between the Sebastian interchange and U.S. 1.

The name Sebastian Boulevard appears in the FDOT local names layer only on the final stretch, from milepost 29.948 to 30.642, while the rest of the Sebastian section is filed as CR-512 (FDOT roadways with local names). County addresses use both names: the North Indian River County Library sits at 1001 Sebastian Boulevard (Indian River County Library), and the county lists the North County Aquatic Center at 9450 County Road 512 (Indian River County).

Commissioner Fran B. Adams Park, formerly North County Regional Park, shares the 9450 address, sits about 1.5 miles east of I-95 and lists the Sebastian Greenway walking trail among its amenities (Indian River County Parks). The county places the aquatic center about 2 miles east of I-95 and describes its competition pool as 18 lanes at 25 yards (North County Aquatic Center).

CR 512 carried 24,000 vehicles a day just east of the southbound I-95 ramps in 2025, falling to 9,300 on the last segment into U.S. 1 in Sebastian (FDOT annual average daily traffic).

FDOT publishes an annual average daily traffic figure and a truck factor for every counted segment of roadway 88040000 (FDOT). The road is busiest at the interstate and carries the least traffic on the last segment into U.S. 1, with a dip to 17,300 on the segment ending at Barber Street before 19,300 on the Barber Street to Easy Street segment.

West of the interchange the same roadway drops to 13,400 vehicles a day on the segment ending at the southbound I-95 ramps, with a truck factor of 12.4 percent (FDOT). For comparison, FDOT counted 59,423 vehicles a day on I-95 itself, roadway 88081000, on the segment ending at the Brevard County line (FDOT roadways with local names). A full year by year breakdown of Sebastian counts, including Roseland Road and Barber Street, sits in the Sebastian traffic counts guide.

FDOT District 4 plans a $2.4 million eastbound widening of CR 512 east of I-95 near 108 Avenue, with letting on December 2, 2026 and completion expected in summer 2027 (FDOT District 4).

The County Road (C.R.) 512 Widening Project is Financial Number 449332-1-52-01, 0.381 miles long, running from east of I-95 to west of 106 Avenue in Indian River County, with an anticipated start in winter 2026 (FDOT District 4 project page). The problem it fixes is a lane drop on the way into Sebastian: there are three eastbound through lanes west of 108 Avenue and only two receiving lanes east of it. FDOT will create a third receiving lane and give vehicles enough distance to merge before CR 512 narrows back to two eastbound lanes.

The published scope has six parts (FDOT). Crews will widen, mill and resurface eastbound CR 512 for a standard merge lane east of 108 Avenue. The pedestrian ramps and crosswalks at 108 Avenue will be reconfigured to shorten the crossing. The eastbound and southbound signal mast arms at the intersection will be replaced. Eastbound swales will be regraded with new drainage structures. Intersection lighting will be increased so pedestrians are more visible, and eastbound signs and pavement markings will be upgraded.

Drivers should expect phased work. FDOT says partial vehicular detours will be needed for the mast arm work at the CR 512 and 108 Avenue intersection, partial pedestrian detours for the ramp and crosswalk work, and access to properties along the corridor will be maintained at all times (FDOT District 4). The first public meeting was held on Wednesday, August 13, 2025, at 6 p.m. at the North Indian River County Library, 1001 Sebastian Boulevard. Questions go to the FDOT District 4 communications office at 954-777-4302. Last verified: October 14, 2026, on the FDOT District 4 website.

FDOT is widening 85th Street, CR 510, to four lanes from its junction with Sebastian Boulevard to west of 87th Street, and its construction page lists that first stretch as running from October 29, 2025 to fall 2028 (FDOT District 4 construction page).

FDOT describes CR 510 as the corridor that carries west to east traffic from I-95 to State Road A1A, and it splits the design work into segments that begin at CR 512 and run to 58th Avenue (FDOT CR 510 design projects). The segment touching Sebastian Boulevard is project 405606-7, 0.97 miles long, built by Timothy Rose Contracting under contract T4699 at an estimated $24,890,000 (FDOT District 4). It brings new signals at the Sebastian Boulevard intersection and at Mako Way, Hammerhead Way and 87th Street, seven-foot buffered bike lanes, a six-foot sidewalk and a bus transfer facility with six additional bays.

The two FDOT pages disagree on Segment 7. The CR 510 design page still shows a December 2024 start, fall 2027 completion and $13,038,720 cost (FDOT design page), while the District 4 construction page shows the October 29, 2025 start, fall 2028 finish and $24,890,000 estimate (FDOT District 4). The construction page is the newer record, since it names the contract and contractor. On those dates, the 85th Street work and the 108 Avenue job on CR 512, set for winter 2026 to summer 2027 (FDOT District 4), keep two work zones on the western approach to Sebastian at the same time through 2027. The construction page also labels the roads S.R. 510 and S.R. 512/Sebastian Boulevard, a state road label that the FDOT design page and the 108 Avenue project page, which still say CR, do not use.

GoLine Routes 5 and 12 both serve CR 512 in Sebastian, with Route 5 stopping at 512 and Roseland Road and Route 12 at a roadside stop on 512, each on a roughly hourly timetable to the North County Hub (GoLine Route 5).

Route 5 starts at Orlando Health Sebastian River Hospital at 6:00 a.m. and leaves every hour through 8:00 p.m., running along U.S. 1, Main Street, Fleming Street and Barber Street before reaching the 512 and Roseland Road stop and the North County Hub (GoLine Route 5 schedule). Route 12 starts at the Barber Street Publix at 6:00 a.m., runs Schumann Drive and Barber Street, and lists an Autozone stop on the 512 roadside on its way to the hub, with no 3:00 p.m. trip from Publix (GoLine Route 12 schedule).

GoLine buses operate weekdays from 6:00 a.m. to 9:00 p.m., excluding Thanksgiving, Christmas and New Year's Day, and Saturday service runs from 7:00 a.m. to 7:00 p.m. on most routes (GoLine). The rider information line is (772) 569-0903, Monday through Friday from 6:00 a.m. to 7:00 p.m., and the GoLine office is at 694 14th Street in Vero Beach.

The long range record for CR 512 sits with the Indian River County Metropolitan Planning Organization, which publishes a dedicated CR 512 Corridor Study alongside its other plans (Indian River County MPO plans and reports).

The MPO page lists the CR 512 Corridor Study in three documents, an executive summary, the study and its appendices, next to the county congestion management reports and the 2045 Treasure Coast Regional Long Range Transportation Plan (Indian River County MPO). Inside the city, the Sebastian Community Redevelopment Agency lists the start of landscaping in the CR512 corridor among projects completed up to mid 2016 and funding for landscaping 512 within Sebastian among projects then in planning or execution, and the page gives no later update (Sebastian CRA projects).

Two details on the official pages are worth knowing. The FDOT District 4 page for the 108 Avenue project still leads with the August 2025 meeting and promises a second meeting, a Construction Open House, before construction, with no date posted as of October 14, 2026 (FDOT District 4); with letting set for December 2, 2026, that open house is the next public step to watch. And the FDOT count tables label only some segments by cross street, so the 23,000 vehicle segment east of the interchange has no named end point (FDOT), which makes the Barber Street to Easy Street count the most useful single number for the Sebastian Highlands stretch.