Oklahoma State Highway 99

US-377/SH-99 US-377 crosses Lake Texoma on a bridge from Grayson County, Texas into Marshall County, Oklahoma. This is the southern terminus of SH-99, which will overlap with US-377 all the way to the U.S. Highway's northern terminus in Stroud, a distance of . The highways' first junction in Oklahoma is with SH-32 south of Madill. north of this intersection, US-377/SH-99 serves as the northern terminus for SH-99C, a child route of SH-99. The route then heads into Madill, where it forms a brief concurrency with US-70 and SH-199. US-377/SH-99 heads northeast out of town and enters Johnston County. Another map published by ODOT of Stroud implies that the route extends north of the ramps to and from I-44 to at least the bridge over the turnpike. The US-377 highway log shows US-377 ending at I-44. After turning back north, it crosses the Cimarron River at Oilton, and has an interchange with the Cimarron Turnpike between Jennings and Hallett. It is then concurrent with US-64 for before passing through Cleveland, where it crosses the Arkansas River. Throughout its final , in Osage County, the highway passes through a relatively sparse region, though it meets SH-20 in Hominy and overlaps SH-11 south of Pawhuska (the county seat) and US-60 north of the city. Its final junction is with SH-10 south of the Oklahoma–Kansas state line. ==History==

The original SH-48 State Highway 99 traces its roots back to the first State Highway 48, which was first established on January 19, 1927. This highway connected Ada to Holdenville; it roughly followed present-day SH-99 until about north of the Canadian River, it then turned east and passed south of the unincorporated town of Vamoosa, after which it followed the route of today's SH-56. After , it passed through Sasakwa, in which it turned north and ended at the original SH-3, at the intersection called "Five-Mile Corner", west of Holdenville. The 1928 state highway map shows the highway extended to SH-9 (now US-62) near Prague along the present-day SH-99 alignment, with the Canadian River crossing as a toll bridge. By January 1, 1929, the route had been realigned to pass through Konawa. The old designation between the Canadian River and SH-3 was replaced shortly after by SH-56. In 1931, SH-48 was greatly expanded. The route was extended northward to US-66 in Stroud. At its southern end, it was extended along a new alignment, which began at SH-19, present day SH-3, southeast of Ada and ran through Tishomingo and Madill to end at the Red River northwest of Denison, Texas, where it met Texas State Highway 91. Also that year, a second section of SH-48 was established, taking over a large portion of what was then SH-25; the remainder of the route was integrated into US-60. Renumbering and realignments On May 17, 1938, both Kansas and Oklahoma renumbered K-11 and OK-48 respectively to bear the number 99, providing continuity between the states. At this time, SH-99 followed the same basic corridor of the present-day route from Madill north to Kansas. However, SH-48's designation was still in use from May 1938 to February 1941. The SH-48 designation was then made into the route passing through Konawa, which the SH-99 designation bypassed. After SH-48 was discontinued, however, it would only remain discussed for just under three years, SH-48 resurfacing for a route only east of SH-99. On May 5, 1958, the route was realigned to once again reach Texas; which was subsequently renumbered to Texas State Highway 99. The existing route of SH-99 (concurrent with SH-3) veered west by about to once again serve the town of Konawa before cutting back northeast to continue the highway's previous heading. This was remedied on December 9, 1968, when the highway was changed to a straighter alignment bypassing Konawa. The old road heading west into Konawa became part of SH-39. all of which were rejected for unknown reasons. In 1988, ODOT began signing US 377 from Madill to Stroud along SH-99 without AASHTO approval. ==Spurs==

SH-99 has two lettered spurs: • SH-99A is a designation for two distinct highways: • A connector highway from US-377/SH-99 to the unincorporated town of Harden City. It was originally known as SH-61A. • A highway that runs from west of Little, Oklahoma to SH-3E, east to SH-48 near Bearden. • SH-99B has one previous and one present highway • A -long highway in Drumright, connecting SH-33 north to SH-99, forming the east edge of a loop around town. It is a former alignment of SH-99. • Former route commissioned in 1948 connecting Bowlegs to Wewoka. It was renumbered to SH-59 in 1965 to extend SH-59 from its former terminus 3 miles north of Bowlegs • SH-99C connects US-377/SH-99 in Madill to SH-32 near Lake Texoma. • SH-99D was a loop north of Hominy, Oklahoma serving the nearby state prison, Connors Correctional Center. The loop was decommissioned in the 1990s, and the bridge over Bird Creek is no longer passable. ==Junction list==

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