Special routes of U.S. Route 90
U.S. Highway 90 Alternate is an alternate route of U.S. Highway 90 in Jacksonville, Florida, United States. It runs from the split of Beach Boulevard and Atlantic Boulevard east along Atlantic Boulevard (State Road 10; US 90 and SR 212 use Beach Boulevard) to Southside Boulevard (State Road 115), where it turns south to end at Beach Boulevard (US 90/SR 212).
U.S. Route 90 in Florida
Within US 90's brief stay in Nassau County as North Beaver Road, it encounters only two dirt roads, the former crossing of an abandoned railroad line, and then a third dirt road. The only bridge in the county is over another tributary to the St. Marys River. It then crosses the Nassau-Duval County Line, where it also enters the Jacksonville City Limits and has its first intersection with County Road 121. Later the road momentarily leaves Jacksonville and enters Baldwin, where it has a concurrency with U.S. Route 301 for several blocks. This concurrency may disappear if the Florida Department of Transportation decides to build the proposed Baldwin Bypass around the western edge of town. Immediately after another railroad crossing with the CSX Callahan Subdivision, both US 90 and 301 narrow down to two lanes at the east end of this concurrency, and then US 90 re-enters Jacksonville. As it passes along the north side of Cecil Airport, the road intersects CR 119, where the name changes from Lake City Road back to Beaver Street. It then runs north of the current northern terminus of the First Coast Expressway (State Road 23), which is intended to be extended to US 90. Next is the intersection of Chaffee Road, which is now CR 115C south of US 90. East of Chaffee Road, the road runs along the north side of part of the CSX Jacksonville Terminal Subdivision, until Devoe Street when it pulls away from the tracks and then runs straight east and west again at the southeast end of Bulls Bay Highway. No access is available to Interstate 295 because of the close proximity of the interchange with I-10, but the bridge beneath it contains a right-of-way for a future westbound lane. A large railroad wye does exist at the eastern edge of this underpass and a moderate intersection can be found east of there with the northern terminus of SR 103, which becomes an unmarked city street north of the road. Several blocks later, the road maintains the same trajectory, becoming four-lanes through the industrialized west side just west of SR 111. It also serves as the northern terminus of State Road 129.