Wallis was served by the San Antonio & Aransas Pass (SA&AP) and the Gulf, Colorado & Santa Fe railroads. The original SA&AP union depot was replaced by a union depot built by Santa Fe.

union depot built by Santa Fe (photo c.1951)
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Ken Stavinoha provides this 1910 photo (above) of the crossing in Wallis and describes it as... "...left to right: Union Depot built by the SA&AP ... this building survives today but away from the tracks, then the Wells Fargo & Co Express Building, and finally Tower 51. This view is looking west along the SA&AP toward Eagle Lake. Modern day Highway 36, which parallels the former GC&SF through Wallis, would be just beyond Union Depot and the Wells Fargo building." |

relocated SA&AP Union Depot