Galveston to Rosenberg (Tower 17)

From the former Galveston Union Station (MP 0.0, now the Galveston Railroad Museum), on Galveston Island, Santa Fe trains used the former Galveston, Houston and Henderson (later MoPac) line west-southwest, past that line's West Yard to the start of the Santa Fe (former Gulf, Colorado & Santa Fe) trackage at its Galveston (MP 2.2), where the line is single track, Restricted Limits, speed limit 25 mph, past East Yard (the end of through BNSF freight service), and turning northwest and joining with the former SP (former Galveston, Harrisburg & San Antonio) and former MoPac/GH&H (again) lines at Island, where CTC starts for the trip across the causeway and Lift Bridge (MP 5.2) to Virginia Point (MP 6.3), where the former MP and former SP split off on the north side to head north-northwest, and the former Santa Fe (and former Trinity & Brazos Valley, later Burlington-Rock Island) continue northwest, single track, Track Warrant Control, Automatic Block Signals, speed limit 30 mph, across the flat coastal plain, to the 5,460 ft. siding at Texas City Junction (MP 11.0), where there is a wye on the northeast side with the Texas City Terminal line northeast to Texas City on Galveston Bay.

There is a detector at MP 12.2, as the line continues northwest, additional track at Texas Crushed Stone (MP 12.7), Hitchcock, Alta Loma, Arcadia, a detector at MP 20.7, Algoa (MP 24.4), where there is a wye junction on the southwest side with the UP Angleton sub. to Bloomington,  and a short stretch of Two Main Tracks, CTC, starts, the junction with the former Trinity & Brazos Valley, later Burlington-Rock Island, line north to Houston, at Alvin (MP 28.6), where the 2MT reduce to single track, CTC, and the speed limit rises to 55 mph, the 12,210 ft. siding at Manvel (MP 36.0), Iowa Colony, Arcola (MP 42.6), where there is a wye on the north side surrounding and joining with the former MP line between Houston and Smithers Lake, making a flat crossing with the former Santa Fe at UP Xing (MP 42.9), where the speed limit is 25 mph on the crossing, the 8,790 ft. siding at Duke (MP 44.2), where the speed limit is 40 mph and the line turns just south of due west, Sugar Lake Junction, where the erstwhile Sugar Land Railway once made a flat crossing, and a detector at MP 46.3, where the speed limit has risen to 55 mph.

West of Thompsons (MP 50.4), there is a wye on the south side with a spur southwest to the Houston Light & Power Smithers Lake Power Plant at Smithers Lake Industrial Spur (MP 51.2), destination of many coal trains, and the line turns west-northwest, past a detector at MP 53.1, the 11,450 ft. siding at Booth (MP 55.0), where it turns more towards the west, Crabb, a turn just west of due north, Richmond, a sharp turn just south of due west, the 12,210 ft. siding at Rosenberg (MP 65.8), a turn just north of due west, and 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.