In 2001 construction began on Denver's "T-Rex" project (TRansportation EXpansion). This involved widening I-25 and adding light-rail service along the corridor through the south metro area. It was a great investment benefitting Denver commuters, but one unfortunate casualty was the old Colorado and Southern Railway bridge over I-25 (and unmarked US 87), just north of Evans Avenue. The rail line had not been used for years, but its bridge was a cool landmark that provided a little extra character in south Denver.
People who do not realize that a railroad historically cut through this area probably see all these odd, slightly-diagonal lot lines and wonder what in the world was going on when this place was laid out.
In about 2014, a pedestrian bridge over I-25 was installed in almost the same location as the historic railroad bridge (shown in the first photo on this page). It would have been really cool if the old bridge could somehow have been repurposed for that function.
This map shows the historic routing of the Colorado and Southern Railway through the Denver area.