An alternate route exists from Barnwell through Point Clear and Fairhope to Daphne along the former alignment of US 98. Although it is mostly signed as County Route 98, some US 98 Alternate signs remain.
U.S. Highway 98 Business was the original segment of US 98 in Panama City, Florida until U.S. Bypass Route 98 was decommissioned in 1979. It currently serves as a business route along the coast of Panama City between St. Andrews and Parker. Streets consist of Beck Avenue, West 10th Street, Chestnut Avenue, West Ninth Street, Frankford Drive, Beach Drive, Sixth Street, East Fifth Street, Boat Race Road, and Pitts Bayou.
U.S. Route 98 Truck is the truck detour for US 98 around Brooksville, Florida. Although a significant portion of the truck route exists within the city limits, it still avoids historic downtown Brooksville by moving to the south and the west. The route exists in concurrency with two existing State Roads and one County Road, and never independently.
Beginning at Jasmine Avenue, and East Jefferson Road(State Road 50A), Truck US 98 runs in concurrency with State Road 50 in a southwesterly direction. As it approaches County Road 581 it turns from southwest to direct west. Crossing the railroad tracks near County Road 445, the road passes by a large church before curving slightly to the northwest. This segment also contains the secret designation of State Road 700, until it reaches the intersection of U.S. Route 41. Here, State Road 700 leaves the truck route, and heads north along US 41(SR 45) until branching off to Ponce De Leon Boulevard to rejoin US 98. Meanwhile, SR 50/Truck US 98 passes a branch of the Brooksville Post Office, and makes a northbound curve at Horse Lake Drive, then at the Hernando County Sheriff's Office before meeting West Jefferson Road. This entire section of SR 50/US Truck 98 was widened from two lanes to four lanes in the early-21st Century.
While SR 50 takes its sharp left turn toward Weeki Wachee, and SR 50A begins eastbound into downtown Brooksville, Truck Route US 98 continues north along County Road 485, also known as Cobb Road. From that intersection it narrows down to two lanes, as it approaches a four-way stop intersection and accompanying red blinker-lights with County Road 484(West Ford Dade Avenue).
Two old sections of Cobb Road used to exist. One is to the right north of County Road 484(West Fort Dade Avenue), and the other is a mining road that runs from the intersection with Yontz Boulevard to an isolated section of County Road 476(Lake Lindsey Road) in Stafford.
Crossing the railroad tracks a second time after the intersection with Yontz Road(Former County Road 485B), the road winds through a rural field between a mining area and a hilly region before finally reuniting with US 98 south of the Willow Prairie Lake area. Truck Weigh Stations exist just west of the northern terminus of Truck US 98 on the right of way of a former railroad crossing.
Business U.S. Route 98 was a short business route of U.S. Route 98 in Natchez, Mississippi between the early 1960s and 1970s. It also included concurrencies with US 61, Bus US 61, Jefferson Street, Canal Street.
U.S. Highway 98 Alternate was the original segment of US 98 in Panama City Beach, Florida until U.S. Bypass Route 98 was decommissioned in 1979. The road is signed as State Road 30 and begins at the Carillion Beach Resorts as Front Beach Road. It turns from south to east where it runs directly along the shores of the Gulf of Mexico. It also includes a pair of wye intersections with both legs of the southern terminus of State Road 79. The road doesn't begin to move away from the beach until east of Dement Circle, when it turns northeast, and then intersects with South Thomas Drive, and then the western terminus of County Road 392 and eastern terminus of CR 392A. US ALT 98 finally ends at US 98 at an interchange just west of the north end of CR 392.
Truck US 98-301 ran to the east of the original US 98-301, which previously ran through the heart of Dade City along 7th Street. After the intersection with Alternate County Road 35 it ran parallel to a CSX railroad line, and passes by the old Dade City Atlantic Coast Line Railroad Depot.
In February 2007, this section was converted into the main branch of the US 98-301 concurrency. It maintains the unsigned SR 533 designation, while SR 35 and SR 700 remain on the 7th Street (Old US 98/301), barring a relinquished portion in downtown Dade City.
Business U.S. Route 98-301 was the main line of the concurrency of U.S. Routes 98 & 301 in Dade City, Florida until February 2007. The road was also unsigned State Road 35, State Road 39, and State Road 700. During the decommissioning of US 98-301 Truck Route, FDOT was carrying out a resurfacing project of the road, and exposed the road's status as State Road 39. SRs 35 and 700 remain hidden, however.