Texas State Highway Spur 330
|Length:||5.81 mi (9.34 km)|
|Existed:||1957 – present|
|East end:||SH 146 in Baytown|
|West end:||I-10 at Lynchburg|
Spur 330 begins at a partial interchange with I-10 at the eastern bank of the San Jacinto River at the small community of Lynchburg, heading southeast towards Baytown, ending at an interchange with SH 146 on the northwest side of the city.
Spur 330 was designated on October 30, 1957 on a route from I-10 east of the San Jacinto River southeastward to at or near the intersection of Decker Drive and Airhart Drive. On November 20, 1973, Spur 330 was extended to Garth Road. 
This section contains a table that is missing mileposts for one or more junctions.
The entire route is in Harris County. All exits are unnumbered.
|Baytown–Highlands line||I-10 west – Houston||I-10 east exit 788; westbound exit and eastbound entrance|
|Crosby-Lynchburg Road – Highlands||Westbound exit only|
|Baytown||I-10 east – Beaumont||I-10 west exit 787; westbound exit and eastbound entrance|
|Baker Road, Wade Road||Access to San Jacinto Methodist Hospital via Baker Road|
|SH 146 – Baytown, La Porte|
|East end of freeway|
|Garth Road||Eastbound exit and westbound entrance; eastern terminus|
|1.000 mi = 1.609 km; 1.000 km = 0.621 mi