Spur 371 follows General Hudnell Drive from the former Kelly Air Force Base to U.S. Highway 90 (US 90) southwest of Downtown San Antonio.

The highway provides access to the Kelly USA industrial park.

Spur 371 begins at Billy Mitchell Boulevard at the former boundary of Kelly Air Force Base and heads towards the northeast as a limited-access highway.

[2] Spur 371 was designated on September 25, 1962, to provide access to Kelly Field from US 90 on the southwest side of San Antonio.

[3] The entire route is in San Antonio, Bexar County.