State Road 399
SR 399 in red, CR 399 in blue
Route information
Maintained by FDOT
Length	22.7 mi[1] (36.5 km)
Major junctions
South end	US 98 in Navarre
North end	US 98 in Gulf Breeze
Location
Country	United States
State	Florida
Counties	Santa Rosa
Highway system
Florida State Highway System Interstate US State Former Pre‑1945 Toll Scenic
← SR 397 → SR 400

State Road 399 (SR 399) is a state road in Santa Rosa County, Florida. Although it only extends 0.32 miles (0.51 km) from U.S. Route 98 (US 98) to the Bob Sikes Bridge, County Road 399 (CR 399) continues over the bridge, along Santa Rosa Island, and back to US 98 via the Navarre Bridge. Other segments of CR 399 also exist on the mainland.

Route description

Beginning at a trumpet interchange with US 98–SR 30 in Gulf Breeze, SR 399 heads south to the end of state maintenance at the gore of the interchange. CR 399 continues south over the Bob Sikes Bridge, which crosses Santa Rosa Sound from the mainland to Santa Rosa Island. It then curves east at Pensacola Beach and heads east along the barrier island through the Gulf Islands National Seashore to Navarre Beach, where CR 399 turns north and crosses the Navarre Bridge back to the mainland. The Navarre Bridge was a toll bridge with one cash and one SunPass lane for southbound traffic until 2005 but it is now toll-free.

Major intersections

County	Location	mi[2]	km	Destinations	Notes
Santa Rosa	Gulf Breeze	0.000	0.000	US 98 (SR 30) to I-10 / SR 281 (Garcon Point Bridge) – Gulf Islands National Seashore	interchange
		0.319[1]	0.513	south end of state maintenance
Santa Rosa Sound		0.6– 1.3	0.97– 2.1	Bob Sikes Bridge
Escambia	Pensacola Beach	1.5	2.4	toll plaza (southbound only)
		2.2	3.5	Fort Pickens Road	to Fort Pickens
Santa Rosa	Navarre Beach	19.3	31.1	Navarre Beach Park
	​	20.1– 20.6	32.3– 33.2	Navarre Bridge over Santa Rosa Sound
	Navarre	20.7	33.3	US 98 (SR 30) to I-10 / SR 281 (Garcon Point Bridge) / SR 87 – Gulf Breeze, Fort Walton Beach
1.000 mi = 1.609 km; 1.000 km = 0.621 mi