State Highway OSR marker

State Highway OSR

Old San Antonio Road
Map
SH OSR; highlighted in red
Route information
Maintained by TxDOT
Length61.918 mi[1] (99.647 km)
Existed1942[1]–present
Major junctions
West end SH 21 near Bryan
Major intersections US 190 / SH 6 in Benchley
I-45 near Leona
East end SH 21 at Midway
Location
CountryUnited States
StateTexas
CountiesBrazos, Robertson, Leon, Madison
Highway system
← SH NASA Road 1→ SH 1

State Highway OSR (SH OSR) is a state highway in the U.S. state of Texas.

The route is the section of the Old San Antonio Road in east-central Texas that is maintained by the Texas Department of Transportation. While most of the original Old San Antonio Road (that is, the section of the road that is not private property) follows State Highway 21, State Highway OSR provides a routing close to the original alignment of the road near and around the Bryan-College Station metropolitan area.[1] It was originally designated on December 17, 1929, as Texas State Highway 938, with the SH OSR designation first being used in 1942.[2][3][1]

"OSR" is the only state highway in Texas with a completely alphabetical designation and one of only two where the designation begins with a letter (Texas State Highway NASA Road 1 being the other with a beginning letter).

Route description

Along SH OSR west of Normangee near Interstate 45

OSR begins at an intersection of SH 21 just east of the Brazos River in Brazos County. It crosses U.S. Highway 190 (US 190) and SH 6 north of Bryan. Just west of this intersection, it begins to run along the county line between Brazos County and Robertson County. Upon crossing the Navasota River, OSR continues as the county line, this time between Leon County and Madison County. It passes through Normangee and crosses Interstate 45 (I-45). East of I-45, OSR crosses solely into Madison County and ends at Midway at another junction with SH 21.

Major intersections

CountyLocationmi[4]kmDestinationsNotes
Brazos​0.000.00 SH 21 – Caldwell, BryanWestern terminus
​4.26.8 FM 1687 (Sandy Point Road) – Bryan
Brazos–Robertson
county line		Benchley8.012.9
 US 190 / SH 6 to Spur 231 – Waco, Houston		Interchange; future I-14; access to Spur 231 via southern frontage road
​12.119.5
 FM 2223 south – Bryan
​18.830.3
 FM 46 north – Wheelock
​27.343.9
 FM 1940 north – Franklin, New Baden
Navasota River29.046.7Bridge
Madison–Leon
county line		​31.150.1
 FM 1452 east
Normangee37.259.9
 FM Spur 3 to FM 3 – Hilltop Lakes
37.560.4 FM 39 – Jewett, North Zulch
​39.463.4
 FM 2289 east
​46.374.5
 FM 2485 north
​48.077.2 I-45 – Centerville, MadisonvilleInterchange; I-45 exit 152
Madison​50.381.0 SH 75 – Madisonville, Leona
​54.888.2
 FM 579 north
​57.292.1
 FM 2346 south
​58.193.5
 FM 1119 north – Centerville
Midway62.099.8 SH 21 – Madisonville, CrockettEastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

References

  1. ^ a b c d Transportation Planning and Programming Division (n.d.). "State Highway OSR". Highway Designation Files. Texas Department of Transportation. Retrieved October 25, 2010.
  2. ^ "Minutes" (PDF). publicdocs.txdot.gov. Texas Department of Transportation. December 16, 1929. Archived (PDF) from the original on June 18, 2018. Retrieved April 28, 2023.
  3. ^ "Minutes" (PDF). publicdocs.txdot.gov. Texas Department of Transportation. November 18, 1938. Archived (PDF) from the original on February 23, 2018. Retrieved April 28, 2023.
  4. ^ Google (January 5, 2011). "Overview map of Texas State Highway OSR Distances Between Interchanges" (Map). Google Maps. Google. Retrieved January 5, 2011.
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