From the acute-angled flat crossing with the former SP Sunset Route, with the northeast quadrant connector used by latter day Santa Fe passenger trains (and their Amtrak successors until 1979) from Houston at Tower 17 (MP 66.2), where the speed limit is 30 mph on the crossing, the former Santa Fe line continues just north of due west, single track, CTC, speed limit 55 mph, past Chips (MP 69.5), Dyer, Orchard (MP 76.2), a detector at MP 77.3, the 11,740 ft. siding at Wallis (MP 80.8), at the west end of which there was once a flat crossing with an erstwhile San Antonio & Aransas Pass line heading west from Houston, and the line turns northwest, to El Pleasant (MP 87.1), and then just west of due north, past a detector at MP 92.8, and the 10,400 ft. siding at Sealy (MP 94.6), where there is a flat crossing and southeast quadrant connector with the former M-K-T (speed limit 30 mph on the crossing).
The line turns north-northeast past Peters, just north of due east past the 9,420 ft. siding at Bellville (MP 106.2), where the speed limit is 45 mph, and a detector at MP 107.6, where the speed limit has risen to 55 mph, northwest and then north-northwest past the 6,810 ft. siding at Dant (MP 110.3), just north of due west past Kenney, just west of due north and then north-northwest past the 11,230 ft. siding at Phillipsburg (MP 120.1), northeast to Brenham (MP 126.0), where the speed limit is 35 mph and there was once a crossing with the erstwhile Houston & Texas Central line west to Austin, curvily north-northwest past a detector at MP 129.0, where the speed limit has returned to 55 mph, the 11,480 ft. siding at Landes (MP 132.9), and Gay Hill, just east of due north past Quarry, north-and northwest past Vulcon (MP 139.1), a wye on the east side with the former Santa Fe lie east to Silsbee, and the 4,980 ft. siding at Somerville (MP 141.4), where the Koppers Industrial Tracks is on the east side.
There is a detector at MP 144.7, Lyons, the 11,320 ft. siding at Davidson (MP 151.3), a turn curvily northwest, the 12,054 ft. siding at Caldwell (MP 157.8), where there is a bridge over the former Houston & Texas Central line between Flatonia and Hearne, with connectors in the west and north quadrants, a turn north-northwest past a detector at MP 161.3 and the 10,970 ft. siding at Chriesman (MP 165.8), a turn west north, and then curvily north-northwest past the flat crossing with the former MoPac line between Austin and Hearne at UP Xing (MP 174.4), where the speed limit is 20 mph on the crossing and the 10,570 ft. siding at Milano (MP 174.5), where the speed limit has risen to 50 mph, a turn just west of due north past a detector at MP 178.4, where the speed limit is back to 55 mph and the 12,160 ft. siding at Hoyte (MP 181.3), and a turn west past the 11,190 ft. siding at Cameron (MP 188.0), where there was once a flat crossing with an erstwhile San Antonio & Aransas Pass line north to Waco, and Petitbone.
The line turns curvily northwest, past the 12,070 ft. siding at Buckholts (MP 196.0), a detector at MP 199.0, the 11,570 ft. siding at Rogers (MP 204.7), and then north-northwest past Heidenheimer (MP 212.3), Knowd (MP 214.9), where there is a short stretch of Six Main Tracks, CTC, for the on-line fuel racks, and the speed limit drops to 30 mph, and Opal (MP 217.4), where the speed limit is still 30 mph across the flat crossing with the former MKT line, there is a connector in the northwest quadrant used by the Amtrak Texas Eagle coming from San Antonio, and the line becomes Two Main Tracks, CTC. There are two grade crossings, MP 218, a grade crossing and a wide road bridge overhead, and the speed limit drops to 20 mph at Temple (MP 218.1), where there is a 7,580 ft. siding as the 2MT reduce to single track, CTC, there is a wye on the west side with the former Santa Fe line west to Brownwood, and the main line turns just east of due north.