 US 290) to Interstate 45 (I-45) with an intersection with State Highway 249 (SH 249) in Tomball, where it is called Main Street.The road mainly serves rural far northern Harris County, but sections east of Tomball have single-family residence subdivisions.FM 2920 was designated on May 6, 1964 on a route from US 290 at Waller eastward to FM 149 (now SH 249) at Tomball.