FARM TO MARKET ROAD NO. 646

Highway Designation File

Transportation Planning and Programming Division
Current Description-Effective Date-Authority

**Certified Mileage (Open to Traffic)**
22.042	2010

FARM TO MARKET ROAD NO. 646

Minute Order 021215, dated 07/23/1945 (Date of Agreement)

From Rotan westward 5.0 miles. (Fisher County) New Designation.

Minute Order 026979, dated 07/14/1949

From Rotan, southwestward to a road intersection, a distance of approximately 9.0 miles. (Fisher County) Extended southwestward 4.0 miles.

Adm. Order, dated 07/11/1951

Cancelled. (Fisher County) Cancelled and combined with FM 611.

Minute Order 030331, dated 05/23/1951; Adm. Order, dated 07/27/1951

From FM 62 at Camden, southeastward to Barnes; thence southward to Hortense, a distance of approximately 6.9 miles. (Polk County) New designation; formerly a section of FM 62.

Adm. Order, dated 01/14/1952

Cancelled. (Polk County) Mileage transferred to FM 942.

Adm. Auth., dated 01/16/1953

From FM 517, southward to SH 6 near Alta Loma, a distance of approximately 4.8 miles. (Galveston County) Formerly a section of FM 517.

Minute Order 044946, dated 10/31/1958; Adm. Cir. 028-1959, dated 02/15/1959

From FM 517 southwest of Dickinson, southward to SH 6 at Alta Loma; and from another point on SH 6 at Alta Loma, southward and southwestward to Brazoria County Line, a total distance of approximately 11.7 miles. (Galveston County) Extended approx. 6.9 miles from SH 6 to Brazoria County Line.

Adm. Auth., dated 12/05/1961; Adm. Cir. 181-1961, dated 12/11/1961

From FM 517 southwest of Dickinson, southward to SH 6 at Alta Loma, a distance of approximately 4.8 miles. (Galveston County) Section from SH 6 southward and southwestward approx. 6.9 miles to Brazoria County Line transferred to FM 1561.

Adm. Auth., dated 10/08/1964; Adm. Cir. 111-1964, dated 10/15/1964

From FM 517 southwest of Dickinson, southward to SH 6 at Alta Loma; and from another point on SH 6 at Alta Loma, southward to FM 2004, a total distance of approximately 8.6 miles. (Galveston County) Section of FM 1561, from SH 6 southward approximately 3.8 miles, transferred to this FM.

Minute Order 071350, dated 05/25/1976; Adm. Ltr. 017-1976, dated 11/15/1976

From IH 45 and FM 3002 in League City, southward to SH 6 at Alta Loma; and from another point on SH 6 at Alta Loma, southward to FM 2004, a total distance of approximately 10.2 miles. (Galveston County) New description; extended northward approx. 1.6 miles from FM 517 to IH 45.

Adm. Auth., dated 02/08/1980; Adm. Ltr. 004-1980, dated 04/15/1980

From FM 517, approximately 1.0 mile southwest of Bacliff, westward, southwestward, and southward approximately 12.2 miles to SH 6 at Santa Fe; and from another point on SH 6 in Santa Fe, southward approximately 3.9 miles to FM 2004, a total distance of approximately 16.1 miles. (Galveston County) New description; route extended over FM 3002.

Adm. Auth., dated 07/20/1982; Adm. Ltr. 008-1982, dated 08/12/1982

From FM 517 (9th St) and Ave B in San Leon, westward and southward along Ave B and Grand St, and via League City and Dickinson to SH 6 in Santa Fe; and from another point on SH 6 in Santa Fe, southward along Main St and Tacquard Rd to FM 2004, a distance of approximately 21.7 miles. (Galveston County) New description; as requested by District, route extended over FM 3436.

Minute Order 105686, dated 06/27/1995; DesLtr 03-1995, dated 06/30/1995
Minute Order 115371, dated 11/15/2018 (Rescinds Minute Order 105686)

Minute Order 105686: From SH 6 southward to FM 2004, a distance of approx. 3.89 miles. (Galveston County) Mileage from SH 6 northward and northeastward to UR 517 [FM 517] in San Leon transferred to UR 646. ["Transferred" mileage, as noted on the Highway Designation File page for UR 646, is approximately 18.154 miles.

Minute Order 115371 general description: Minute Order 115371 rescinds Minute Order 105686. The result of this rescission is the elimination of the Urban Road (UR) system. The Farm to Market (FM) and Ranch to Market (RM) roadways which were intended to be redesignated as Urban Roads under the provisions of Minute Order 105686 revert back to their FM/RM designations. Minute Order 115371 declares that the provisions of Minute Order 105686 were never implemented, and although the UR designations were in effect during the interim between these two Minute Orders, the affected roadways continued to be referred to by their FM or RM designations. Only the Highway Designation Files made reference to the UR designations during this interim period. Upon the passing of Minute Order 115371, the affected Highway Designation Files have been updated retroactively to reflect the FM/RM designations.

Minute Order 115371 as it affects FM 646: Any mileage that was previously described as "transferred to UR 646" reverts back to FM 646. This is retroactive to the date of passage of Minute Order 105686. The Highway Designation File page for UR 646 has been removed.