County Road 603 (CR 603), or Indian River Boulevard, is a major 6.5 mile county road that runs parallel to US Highway 1 (US 1) in Indian River County, Florida. CR 603 connects US 1 in Vero Beach South near McKee Botanical Gardens with the Alma Lee Loy Bridge and Merrill P. Barber Bridge.
State Road 60 (SR 60) runs concurrently with CR 603 in Vero Beach. The county road was built in 1987.
CR 603 begins in Vero Beach South at the intersection with US 1. The road heads north, intersecting with CR 612 (8th Street). In Vero Beach, CR 603 intersects SR 656, with access to the Alma Lee Loy Bridge. The intersection is the sight of the "Three Corners" project of Vero Beach. At the intersection with SR 60, CR 603 and SR 60 begin running concurrently. Shopping is provided at the Miracle Mile neighborhood nearby. SR 60 provides access to downtown Vero Beach. SR 60 exits CR 603 near Royal Palm Point at the Merrill P. Barber Bridge, where construction is underway. CR 603 intersects with 37th street in Vero Beach, providing access to Cleveland Clinic Indian River Hospital and surrounding medical facilities.
In Gifford, CR 603 intersects CR 630 (41st Street), which connects to the Vero Beach Regional Airport. CR 630 provides access to the Indian River County Jail as well. A housing development with a recreational area is under construction at the intersection. CR 603 ends on US-1 in Gifford and continues locally as 53rd street.https://indianriver.gov/Document%20Center/Services/Public%20Works/Traffic%20Engineering/Reports%20and%20Statistics/2023/53rd%20St.%20@%20US.%201.pdf