# Florida State Road 686

State Road 686 (SR 686) is an east–west route in Pinellas County, running from U.S. Route 19 Alternate (Alt. US 19) in Largo east to an intersection with SR 687 (4th Street) and SR 694 (Gandy Boulevard) in St. Petersburg, Florida. Originally, SR 686 extended further west, ending at Gulf Boulevard in Belleair Beach, next to the shores of the Gulf of Mexico.

## Route description

State Road 686 begins at Alt US 19, running east as East Bay Drive. It runs through Largo, where it crosses an interchange with US 19 and east of the intersection, SR 686 is known as Roosevelt Boulevard, named for President Franklin Delano Roosevelt. It then travels in a southeastern direction through Clearwater, and intersects SR 688 (Ulmerton Road), and heads east with a concurrency for just under a mile. At the end of the concurrency, SR 686 once again heads southeast, entering St. Petersburg. An interchange with Interstate 275 (I-275) follows, and SR 686 ends at the intersection with SR 687 (4th Street) and SR 694 (Gandy Boulevard).

### Major intersections

The entire route is in Pinellas County.
| Location | mi | km | Destinations | Notes |
| Largo | 0.000 | 0.000 | US 19 Alt. (Missouri Avenue / Seminole Boulevard / SR 595) / West Bay Drive (CR 416 west) – Clearwater, Seminole, Beaches | Western terminus |
| Largo | 0.789 | 1.270 | Highland Avenue (CR 375 north) | |
| Largo | 1.157 | 1.862 | Alternate Keene Road (CR 395 north) | |
| Largo | 1.548 | 2.491 | CR 1 (Keene Road / Starkey Road) | |
| Largo | 2.567 | 4.131 | Belcher Road (CR 501) | |
| Largo | 3.55 | 5.71 | US 19 (SR 55) – Clearwater, Pinellas Park, St. Petersburg | interchange |
| Largo | 4.061 | 6.536 | 62nd Street North (CR 565 south) | |
| Largo | 4.732 | 7.615 | Avalon Avenue (CR 595 south) | |
| Largo | 5.46 | 8.79 | CR 611 (Bayside Bridge / 49th Street) – Clearwater, Pinellas Park | interchange |
| ​ | 6.079 | 9.783 | St. Petersburg-Clearwater International Airport | |
| Pinellas Park | 6.903 | 11.109 | SR 688 west (Ulmerton Road) – Indian Rocks Beach | interchange; west end of SR 688 overlap; no access from SR 688 east to SR 686 west |
| St. Petersburg | 7.867 | 12.661 | SR 688 east (Ulmerton Road) to I-275 north – Tampa | interchange; east end of SR 688 overlap |
| Pinellas Park–St. Petersburg line | 8.503 | 13.684 | 28th Street North (CR 683 south) | |
| St. Petersburg | 9.31 | 14.98 | I-275 (SR 93) – Tampa, St. Petersburg | Exit 30 (I-275) |
| St. Petersburg | 10.272 | 16.531 | CR 803 (Dr. Martin Luther King Jr. Street North) to I-275 north – Tampa, St. Petersburg | |
| St. Petersburg | 10.823 | 17.418 | US 92 / SR 694 west (Gandy Boulevard / 4th Street North / SR 600 east / SR 687) | Eastern terminus |
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi Concurrency terminus |||||

### State Road 686A

State Road 686A (SR 686A) is an under-construction state road in St. Petersburg. The route is being constructed along what is currently Pinellas County Road 296, consisting of 118th Avenue North and the 118th Avenue Connector, as part of the Gateway Expressway.
As of August 2018, the route is 1.439 miles (2.316 km) long, and is planned for 4 miles in length. The route currently runs from the foot of the 118th Avenue Connector westbound offramp (milepost 1.582) to just east of the I-275 on-ramps (milepost 3.021).

### County Road 416

County Road 416 extends from Gulf Boulevard in Belleair Beach, east to Clearwater-Largo Road in Largo. The entirety of the route was previously signed as SR 686. From Gulf Boulevard in Belleair Beach, through Belleair Bluffs to Indian Rocks Road, the road is called the Belleair Causeway. In Largo, it becomes West Bay Drive. West Bay Drive is historically Largo's "Main Street".