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Farm to Market Road 400

Farm to Market Road 400 marker

Farm to Market Road 400
Route information
Maintained by TxDOT
Length: 85.417 mi (137.465 km)
Existed: 1945 – present
Major junctions
South end: US 87 north of Tahoka
  US 84 in Slaton
US 62 / US 82 / SH 114 east of Idalou
US 70 in Plainview
North end: FM 145 east of Kress
Location
Counties: Lynn, Lubbock, Hale, Swisher
Highway system
FM 399 FM 401

Farm to Market Road 400 marker

Farm to Market Road 400 (FM 400) is a farm to market road located in Lynn, Lubbock, Hale, and Swisher counties in the Llano Estacado of Texas.

The southern terminus of FM 400 is at an interchange with US 87 north of the Tahoka city limits. The route travels to the northeast through rural areas of Lynn County, passing to the west of Tahoka Lake and through Wilson along that city's 10th Street before entering Lubbock County. In Slaton, FM 400 turns to the north and crosses US 84 near the southern city limits before entering that city's downtown, where it is concurrent with Bus. US 84 along 9th Street for 2.4 miles (3.9 km). The route leaves Slaton and continues north along Vetch Avenue, passing to the east of Slaton Airport, then descending into and climbing out of Yellow House Canyon, to the east of the community of Ransom Canyon. The next major intersection is just east of Idalou, with US 62 / US 82 / SH 114. Continuing north, FM 400 crosses into Hale County, approximately 9.0 miles (14.5 km) east of Abernathy. It has a concurrency of about 2.0 miles (3.2 km) with FM 37 and passes through the farming community of Happy Union before entering Plainview, where it is known as Date Street. The highway crosses US 70 and then briefly turns to the east along 24th Street before resuming its northward journey. FM 400 has a brief concurrency with FM 788 in northern Hale County; after the two routes separate, FM 400 enters Swisher County, and reaches its northern terminus at FM 145 east of Kress.


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